def __init__(self,
angle=0,
samp_rate=1e6,
fft_len=pow(2, 20),
samp_rate_sink=8000,
tx_amp=10e-3,
max_num_of_targets=10,
lowpass_cutoff_freq=1700,
RF=2.49e9,
speed_samp_rate=1,
DC_filter_num_elements=4,
threshold_dB=-70,
rx_gain=0,
highpass_cutoff_freq=0,
doppler_signal_bw=20):
grc_wxgui.top_block_gui.__init__(
self, title="CW Doppler Radar Simulator Multiple Targets")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Parameters
##################################################
self.angle = angle
self.samp_rate = samp_rate
self.fft_len = fft_len
self.samp_rate_sink = samp_rate_sink
self.tx_amp = tx_amp
self.max_num_of_targets = max_num_of_targets
self.lowpass_cutoff_freq = lowpass_cutoff_freq
self.RF = RF
self.speed_samp_rate = speed_samp_rate
self.DC_filter_num_elements = DC_filter_num_elements
self.threshold_dB = threshold_dB
self.rx_gain = rx_gain
self.highpass_cutoff_freq = highpass_cutoff_freq
self.doppler_signal_bw = doppler_signal_bw
##################################################
# Variables
##################################################
self.target_speed_vector = target_speed_vector = 0
self.target_direction_vector = target_direction_vector = 0
self.num_targets = num_targets = 0
self.tx_amp_tuner = tx_amp_tuner = tx_amp
self.threshold_dB_tuner = threshold_dB_tuner = threshold_dB
self.speed_textbox = speed_textbox = target_speed_vector
self.rx_gain_tuner = rx_gain_tuner = rx_gain
self.num_targets_textbox = num_targets_textbox = num_targets
self.max_num_of_targets_tuner = max_num_of_targets_tuner = max_num_of_targets
self.lowpass_cutoff_freq_tuner = lowpass_cutoff_freq_tuner = lowpass_cutoff_freq
self.highpass_cutoff_freq_tuner = highpass_cutoff_freq_tuner = highpass_cutoff_freq
self.doppler_signal_bw_tuner = doppler_signal_bw_tuner = doppler_signal_bw
self.doppler_freq_sim_tuner = doppler_freq_sim_tuner = 100
self.direction_textbox = direction_textbox = target_direction_vector
self.angle_tuner = angle_tuner = angle
self.RF_tuner = RF_tuner = RF
##################################################
# Blocks
##################################################
_tx_amp_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._tx_amp_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
label="TX Signal Amp",
converter=forms.float_converter(),
proportion=0,
)
self._tx_amp_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
minimum=0,
maximum=100e-3,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_tx_amp_tuner_sizer, 0, 8, 1, 21)
_threshold_dB_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._threshold_dB_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
label="Detected Target Threshold (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._threshold_dB_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
minimum=-90,
maximum=-30,
num_steps=60,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_threshold_dB_tuner_sizer, 2, 0, 1, 8)
self.speed_vector_probe = blocks.probe_signal_vf(max_num_of_targets)
self.notebook = self.notebook = wx.Notebook(self.GetWin(),
style=wx.NB_TOP)
self.notebook.AddPage(grc_wxgui.Panel(self.notebook),
"FFT CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook),
"Frequency/Time CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook),
"FFT CW Doppler Radar Receiver Full Spectrum")
self.GridAdd(self.notebook, 6, 0, 13, 53)
_max_num_of_targets_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._max_num_of_targets_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
label="Maximum Number of Targets",
converter=forms.int_converter(),
proportion=0,
)
self._max_num_of_targets_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=int,
proportion=1,
)
self.GridAdd(_max_num_of_targets_tuner_sizer, 2, 8, 1, 21)
_lowpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._lowpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
label="Low-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._lowpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
minimum=0,
maximum=3000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_lowpass_cutoff_freq_tuner_sizer, 1, 29, 1, 24)
_highpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._highpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
label="High-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._highpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
minimum=0,
maximum=1600,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_highpass_cutoff_freq_tuner_sizer, 0, 29, 1, 24)
_doppler_signal_bw_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._doppler_signal_bw_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
label="Doppler Spectrum Bandwidth (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._doppler_signal_bw_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_doppler_signal_bw_tuner_sizer, 2, 29, 1, 24)
_doppler_freq_sim_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._doppler_freq_sim_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_doppler_freq_sim_tuner_sizer,
value=self.doppler_freq_sim_tuner,
callback=self.set_doppler_freq_sim_tuner,
label="Doppler Frequency Simulator (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._doppler_freq_sim_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_doppler_freq_sim_tuner_sizer,
value=self.doppler_freq_sim_tuner,
callback=self.set_doppler_freq_sim_tuner,
minimum=-2000,
maximum=2000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_doppler_freq_sim_tuner_sizer, 3, 29, 1, 24)
self.direction_vector_probe = blocks.probe_signal_vi(
max_num_of_targets)
_angle_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._angle_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
label="Angle of Approach of the Target (Deg)",
converter=forms.float_converter(),
proportion=0,
)
self._angle_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
minimum=0,
maximum=89,
num_steps=890,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_angle_tuner_sizer, 1, 8, 1, 21)
_RF_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._RF_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
label="Radar Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._RF_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
minimum=2.4e9,
maximum=2.5e9,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_RF_tuner_sizer, 1, 0, 1, 8)
self.wxgui_waterfallsink2_time_frequency = waterfallsink2.waterfall_sink_c(
self.notebook.GetPage(1).GetWin(),
baseband_freq=0,
dynamic_range=100,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=15,
average=True,
avg_alpha=None,
title="Time/Frequency CW Doppler Radar Receiver",
win=window.blackmanharris,
)
self.notebook.GetPage(1).Add(
self.wxgui_waterfallsink2_time_frequency.win)
self.wxgui_fftsink2_full_spectrum = fftsink2.fft_sink_c(
self.notebook.GetPage(2).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=4096,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver Full Spectrum",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(2).Add(self.wxgui_fftsink2_full_spectrum.win)
self.wxgui_fftsink2 = fftsink2.fft_sink_c(
self.notebook.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver ",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(0).Add(self.wxgui_fftsink2.win)
self.vector_to_stream_positive = blocks.vector_to_stream(
gr.sizeof_float * 1, fft_len)
self.vector_to_stream_negative = blocks.vector_to_stream(
gr.sizeof_float * 1, fft_len)
self.tx_signal = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, 0,
1, 0)
self.throtle_block = blocks.throttle(gr.sizeof_gr_complex * 1,
samp_rate, True)
def _target_speed_vector_probe():
while True:
val = self.speed_vector_probe.level()
try:
self.set_target_speed_vector(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_speed_vector_thread = threading.Thread(
target=_target_speed_vector_probe)
_target_speed_vector_thread.daemon = True
_target_speed_vector_thread.start()
def _target_direction_vector_probe():
while True:
val = self.direction_vector_probe.level()
try:
self.set_target_direction_vector(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_direction_vector_thread = threading.Thread(
target=_target_direction_vector_probe)
_target_direction_vector_thread.daemon = True
_target_direction_vector_thread.start()
self.stream_to_vector_positive = blocks.stream_to_vector(
gr.sizeof_float * 1, fft_len / 2)
self.stream_to_vector_negative = blocks.stream_to_vector(
gr.sizeof_float * 1, fft_len / 2)
self.stream_to_vector_for_fft = blocks.stream_to_vector(
gr.sizeof_gr_complex * 1, fft_len)
self._speed_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.speed_textbox,
callback=self.set_speed_textbox,
label="Targets Speed (Kph)",
converter=forms.str_converter(),
)
self.GridAdd(self._speed_textbox_text_box, 4, 0, 1, 53)
self.rx_signal_2 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE,
doppler_freq_sim_tuner + 15,
tx_amp_tuner - 5e-3, 0)
self.rx_signal_1 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE,
doppler_freq_sim_tuner - 1300,
tx_amp + 10e-3, 0)
self.rx_signal_0 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE,
doppler_freq_sim_tuner,
tx_amp_tuner, 0)
_rx_gain_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._rx_gain_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
label="USRP RX Gain (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._rx_gain_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
minimum=0,
maximum=70,
num_steps=70,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_rx_gain_tuner_sizer, 0, 0, 1, 8)
self.rational_resampler = filter.rational_resampler_ccc(
interpolation=1,
decimation=int(samp_rate / samp_rate_sink),
taps=None,
fractional_bw=None,
)
self._num_targets_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.num_targets_textbox,
callback=self.set_num_targets_textbox,
label="Number of Targets Detected",
converter=forms.int_converter(),
)
self.GridAdd(self._num_targets_textbox_text_box, 3, 0, 1, 4)
self.num_targets_probe = blocks.probe_signal_i()
def _num_targets_probe():
while True:
val = self.num_targets_probe.level()
try:
self.set_num_targets(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_num_targets_thread = threading.Thread(target=_num_targets_probe)
_num_targets_thread.daemon = True
_num_targets_thread.start()
self.mixer = blocks.multiply_vcc(1)
self.keep_m_in_n_positive = blocks.keep_m_in_n(gr.sizeof_float,
fft_len / 2, fft_len,
fft_len / 2)
self.keep_m_in_n_negative = blocks.keep_m_in_n(gr.sizeof_float,
fft_len / 2, fft_len, 0)
self.fft_vxx_0 = fft.fft_vcc(fft_len, True,
(window.blackmanharris(fft_len)), True, 1)
self._direction_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.direction_textbox,
callback=self.set_direction_textbox,
label="Targets Direction",
converter=forms.str_converter(),
)
self.GridAdd(self._direction_textbox_text_box, 5, 0, 1, 53)
self.cwradar_vector_flip_ff = cwradar.vector_flip_ff(fft_len / 2)
self.cwradar_doppler_velocity_multiple_targets_ff = cwradar.doppler_velocity_multiple_targets_ff(
fft_len / 2, samp_rate, RF_tuner, threshold_dB_tuner, angle_tuner,
lowpass_cutoff_freq_tuner, highpass_cutoff_freq_tuner,
max_num_of_targets_tuner, doppler_signal_bw_tuner)
self.blocks_complex_to_mag = blocks.complex_to_mag(fft_len)
self.awgn_channel_simulator = analog.noise_source_c(
analog.GR_GAUSSIAN, 1e-3, 0)
self.adder_2 = blocks.add_vcc(1)
self.adder_1 = blocks.add_vcc(1)
self.DC_filter_positive = blocks.multiply_const_vff(
([0] * DC_filter_num_elements + [1] *
((fft_len / 2) - DC_filter_num_elements)))
self.DC_filter_negative = blocks.multiply_const_vff(
([0] * DC_filter_num_elements + [1] *
((fft_len / 2) - DC_filter_num_elements)))
##################################################
# Connections
##################################################
self.connect((self.DC_filter_negative, 0),
(self.cwradar_doppler_velocity_multiple_targets_ff, 0))
self.connect((self.DC_filter_positive, 0),
(self.cwradar_doppler_velocity_multiple_targets_ff, 1))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff, 2),
(self.num_targets_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff, 1),
(self.direction_vector_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff, 0),
(self.speed_vector_probe, 0))
self.connect((self.awgn_channel_simulator, 0), (self.adder_2, 0))
self.connect((self.tx_signal, 0), (self.adder_2, 1))
self.connect((self.adder_2, 0), (self.mixer, 0))
self.connect((self.awgn_channel_simulator, 0), (self.adder_1, 0))
self.connect((self.mixer, 0), (self.throtle_block, 0))
self.connect((self.mixer, 0), (self.stream_to_vector_for_fft, 0))
self.connect((self.throtle_block, 0),
(self.wxgui_fftsink2_full_spectrum, 0))
self.connect((self.throtle_block, 0), (self.rational_resampler, 0))
self.connect((self.adder_1, 0), (self.mixer, 1))
self.connect((self.rational_resampler, 0),
(self.wxgui_waterfallsink2_time_frequency, 0))
self.connect((self.stream_to_vector_for_fft, 0), (self.fft_vxx_0, 0))
self.connect((self.fft_vxx_0, 0), (self.blocks_complex_to_mag, 0))
self.connect((self.blocks_complex_to_mag, 0),
(self.vector_to_stream_negative, 0))
self.connect((self.blocks_complex_to_mag, 0),
(self.vector_to_stream_positive, 0))
self.connect((self.vector_to_stream_positive, 0),
(self.keep_m_in_n_positive, 0))
self.connect((self.keep_m_in_n_negative, 0),
(self.stream_to_vector_negative, 0))
self.connect((self.keep_m_in_n_positive, 0),
(self.stream_to_vector_positive, 0))
self.connect((self.vector_to_stream_negative, 0),
(self.keep_m_in_n_negative, 0))
self.connect((self.stream_to_vector_positive, 0),
(self.DC_filter_positive, 0))
self.connect((self.stream_to_vector_negative, 0),
(self.cwradar_vector_flip_ff, 0))
self.connect((self.cwradar_vector_flip_ff, 0),
(self.DC_filter_negative, 0))
self.connect((self.rx_signal_1, 0), (self.adder_1, 3))
self.connect((self.rx_signal_0, 0), (self.adder_1, 2))
self.connect((self.tx_signal, 0), (self.adder_1, 1))
self.connect((self.rx_signal_2, 0), (self.adder_1, 4))
self.connect((self.rational_resampler, 0), (self.wxgui_fftsink2, 0))
def __init__(self, lo_offset_freq=1e6, threshold_dB=-70, RF=2.49e9, DC_filter_num_elements=4, speed_samp_rate=1, samp_rate=1e6, highpass_cutoff_freq=0, lowpass_cutoff_freq=1700, fft_len=pow(2,20), samp_rate_sink=8000, angle=0, tx_amp=1, rx_gain=30.5):
grc_wxgui.top_block_gui.__init__(self, title="CW Radar Single Target")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Parameters
##################################################
self.lo_offset_freq = lo_offset_freq
self.threshold_dB = threshold_dB
self.RF = RF
self.DC_filter_num_elements = DC_filter_num_elements
self.speed_samp_rate = speed_samp_rate
self.samp_rate = samp_rate
self.highpass_cutoff_freq = highpass_cutoff_freq
self.lowpass_cutoff_freq = lowpass_cutoff_freq
self.fft_len = fft_len
self.samp_rate_sink = samp_rate_sink
self.angle = angle
self.tx_amp = tx_amp
self.rx_gain = rx_gain
##################################################
# Variables
##################################################
self.target_speed = target_speed = 0
self.target_direction = target_direction = 0
self.tx_amp_tuner = tx_amp_tuner = tx_amp
self.threshold_dB_tuner = threshold_dB_tuner = threshold_dB
self.speed_textbox = speed_textbox = target_speed
self.rx_gain_tuner = rx_gain_tuner = rx_gain
self.lowpass_cutoff_freq_tuner = lowpass_cutoff_freq_tuner = lowpass_cutoff_freq
self.highpass_cutoff_freq_tuner = highpass_cutoff_freq_tuner = highpass_cutoff_freq
self.direction_textbox = direction_textbox = target_direction
self.angle_tuner = angle_tuner = angle
self.RF_tuner = RF_tuner = RF
##################################################
# Blocks
##################################################
_tx_amp_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._tx_amp_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
label="TX Signal Amp",
converter=forms.float_converter(),
proportion=0,
)
self._tx_amp_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
minimum=0,
maximum=1,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_tx_amp_tuner_sizer, 0, 17, 1, 26)
_threshold_dB_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._threshold_dB_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
label="Detected Target Threshold (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._threshold_dB_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
minimum=-90,
maximum=-30,
num_steps=60,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_threshold_dB_tuner_sizer, 2, 0, 1, 17)
self.speed_probe = blocks.probe_signal_f()
_rx_gain_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._rx_gain_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
label="USRP RX Gain (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._rx_gain_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
minimum=0,
maximum=30.5 + 62,
num_steps=185,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_rx_gain_tuner_sizer, 0, 0, 1, 17)
self.notebook = self.notebook = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "FFT CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "Frequency/Time CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "FFT CW Doppler Radar Receiver Full Spectrum")
self.GridAdd(self.notebook, 5, 0, 13, 75)
_lowpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._lowpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
label="Lowpass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._lowpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
minimum=0,
maximum=3000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_lowpass_cutoff_freq_tuner_sizer, 1, 43, 1, 32)
_highpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._highpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
label="High-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._highpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
minimum=0,
maximum=1600,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_highpass_cutoff_freq_tuner_sizer, 0, 43, 1, 32)
self.direction_probe = blocks.probe_signal_i()
_angle_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._angle_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
label="Angle of Approach of the Target (Deg)",
converter=forms.float_converter(),
proportion=0,
)
self._angle_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
minimum=0,
maximum=89,
num_steps=890,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_angle_tuner_sizer, 1, 17, 1, 26)
_RF_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._RF_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
label="Radar Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._RF_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
minimum=2.4e9,
maximum=2.5e9,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_RF_tuner_sizer, 1, 0, 1, 17)
self.wxgui_waterfallsink = waterfallsink2.waterfall_sink_c(
self.notebook.GetPage(1).GetWin(),
baseband_freq=0,
dynamic_range=100,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=100,
average=False,
avg_alpha=None,
title="Time/Frequency CW Doppler Radar",
win=window.blackmanharris,
)
self.notebook.GetPage(1).Add(self.wxgui_waterfallsink.win)
self.wxgui_fftsink2_full_spectrum = fftsink2.fft_sink_c(
self.notebook.GetPage(2).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=4096,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver Full Spectrum",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(2).Add(self.wxgui_fftsink2_full_spectrum.win)
self.wxgui_fftsink = fftsink2.fft_sink_c(
self.notebook.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=100,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver ",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(0).Add(self.wxgui_fftsink.win)
self.usrp_transmitter = uhd.usrp_sink(
",".join(('addr=192.168.10.2', "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_transmitter.set_clock_source("internal", 0)
self.usrp_transmitter.set_samp_rate(samp_rate)
self.usrp_transmitter.set_center_freq(RF_tuner, 0)
self.usrp_transmitter.set_gain(0, 0)
self.usrp_transmitter.set_antenna('TX/RX', 0)
self.usrp_receiver = uhd.usrp_source(
",".join(('addr=192.168.10.3', "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_receiver.set_clock_source("mimo", 0)
self.usrp_receiver.set_time_source("mimo", 0)
self.usrp_receiver.set_samp_rate(samp_rate)
self.usrp_receiver.set_center_freq(uhd.tune_request(RF_tuner, lo_offset_freq), 0)
self.usrp_receiver.set_gain(rx_gain_tuner, 0)
self.usrp_receiver.set_antenna("J1", 0)
self.usrp_receiver.set_bandwidth(15e6, 0)
def _target_speed_probe():
while True:
val = self.speed_probe.level()
try:
self.set_target_speed(val)
except AttributeError:
pass
time.sleep(1.0 / (2))
_target_speed_thread = threading.Thread(target=_target_speed_probe)
_target_speed_thread.daemon = True
_target_speed_thread.start()
def _target_direction_probe():
while True:
val = self.direction_probe.level()
try:
self.set_target_direction(val)
except AttributeError:
pass
time.sleep(1.0 / (2))
_target_direction_thread = threading.Thread(target=_target_direction_probe)
_target_direction_thread.daemon = True
_target_direction_thread.start()
self._speed_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.speed_textbox,
callback=self.set_speed_textbox,
label="Target Speed (Kph)",
converter=forms.float_converter(),
)
self.GridAdd(self._speed_textbox_text_box, 3, 0, 1, 17)
self.rational_resampler = filter.rational_resampler_ccc(
interpolation=1,
decimation=int(samp_rate/samp_rate_sink),
taps=None,
fractional_bw=None,
)
self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (window.blackmanharris(fft_len)), True, 1)
self._direction_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.direction_textbox,
callback=self.set_direction_textbox,
label="Target Direction",
converter=forms.str_converter(),
)
self.GridAdd(self._direction_textbox_text_box, 4, 0, 1, 17)
self.cwradar_vector_flip_ff = cwradar.vector_flip_ff(fft_len/2)
self.cwradar_doppler_velocity_single_target_ff_0 = cwradar.doppler_velocity_single_target_ff(fft_len/2, samp_rate, RF_tuner, threshold_dB_tuner, angle_tuner, lowpass_cutoff_freq_tuner, highpass_cutoff_freq_tuner)
self.complex_to_mag = blocks.complex_to_mag(fft_len)
self.blocks_vector_to_stream_0_0 = blocks.vector_to_stream(gr.sizeof_float*1, fft_len)
self.blocks_vector_to_stream_0 = blocks.vector_to_stream(gr.sizeof_float*1, fft_len)
self.blocks_stream_to_vector_1_0 = blocks.stream_to_vector(gr.sizeof_float*1, fft_len/2)
self.blocks_stream_to_vector_1 = blocks.stream_to_vector(gr.sizeof_float*1, fft_len/2)
self.blocks_stream_to_vector_0 = blocks.stream_to_vector(gr.sizeof_gr_complex*1, fft_len)
self.blocks_keep_m_in_n_0_0 = blocks.keep_m_in_n(gr.sizeof_float, fft_len/2, fft_len, fft_len/2)
self.blocks_keep_m_in_n_0 = blocks.keep_m_in_n(gr.sizeof_float, fft_len/2, fft_len, 0)
self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, 0, tx_amp_tuner, 0)
self.DC_filter_0 = blocks.multiply_const_vff(([0]*DC_filter_num_elements+[1]*((fft_len/2)-DC_filter_num_elements)))
self.DC_filter = blocks.multiply_const_vff(([0]*DC_filter_num_elements+[1]*((fft_len/2)-DC_filter_num_elements)))
##################################################
# Connections
##################################################
self.connect((self.blocks_vector_to_stream_0_0, 0), (self.blocks_keep_m_in_n_0_0, 0))
self.connect((self.blocks_keep_m_in_n_0, 0), (self.blocks_stream_to_vector_1, 0))
self.connect((self.blocks_keep_m_in_n_0_0, 0), (self.blocks_stream_to_vector_1_0, 0))
self.connect((self.blocks_vector_to_stream_0, 0), (self.blocks_keep_m_in_n_0, 0))
self.connect((self.blocks_stream_to_vector_1_0, 0), (self.DC_filter_0, 0))
self.connect((self.blocks_stream_to_vector_1, 0), (self.cwradar_vector_flip_ff, 0))
self.connect((self.cwradar_vector_flip_ff, 0), (self.DC_filter, 0))
self.connect((self.rational_resampler, 0), (self.wxgui_waterfallsink, 0))
self.connect((self.rational_resampler, 0), (self.wxgui_fftsink, 0))
self.connect((self.fft_vxx_0, 0), (self.complex_to_mag, 0))
self.connect((self.blocks_stream_to_vector_0, 0), (self.fft_vxx_0, 0))
self.connect((self.complex_to_mag, 0), (self.blocks_vector_to_stream_0, 0))
self.connect((self.complex_to_mag, 0), (self.blocks_vector_to_stream_0_0, 0))
self.connect((self.DC_filter_0, 0), (self.cwradar_doppler_velocity_single_target_ff_0, 1))
self.connect((self.DC_filter, 0), (self.cwradar_doppler_velocity_single_target_ff_0, 0))
self.connect((self.cwradar_doppler_velocity_single_target_ff_0, 0), (self.speed_probe, 0))
self.connect((self.cwradar_doppler_velocity_single_target_ff_0, 1), (self.direction_probe, 0))
self.connect((self.usrp_receiver, 0), (self.wxgui_fftsink2_full_spectrum, 0))
self.connect((self.usrp_receiver, 0), (self.rational_resampler, 0))
self.connect((self.usrp_receiver, 0), (self.blocks_stream_to_vector_0, 0))
self.connect((self.analog_sig_source_x_0, 0), (self.usrp_transmitter, 0))
def __init__(self,
DC_filter_num_elements=4,
samp_rate_sink=8000,
lo_offset_freq=1e6,
highpass_cutoff_freq=0,
doppler_signal_bw=20,
rx_gain=30.5,
tx_amp=1,
max_num_of_targets=10,
angle=0,
speed_samp_rate=1,
lowpass_cutoff_freq=1700,
fft_len=pow(2, 20),
RF=2.49e9,
samp_rate=1e6,
threshold_dB=-70):
grc_wxgui.top_block_gui.__init__(self,
title="CW Radar Multiple Targets")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Parameters
##################################################
self.DC_filter_num_elements = DC_filter_num_elements
self.samp_rate_sink = samp_rate_sink
self.lo_offset_freq = lo_offset_freq
self.highpass_cutoff_freq = highpass_cutoff_freq
self.doppler_signal_bw = doppler_signal_bw
self.rx_gain = rx_gain
self.tx_amp = tx_amp
self.max_num_of_targets = max_num_of_targets
self.angle = angle
self.speed_samp_rate = speed_samp_rate
self.lowpass_cutoff_freq = lowpass_cutoff_freq
self.fft_len = fft_len
self.RF = RF
self.samp_rate = samp_rate
self.threshold_dB = threshold_dB
##################################################
# Variables
##################################################
self.target_speed_vector = target_speed_vector = 0
self.target_direction_vector = target_direction_vector = 0
self.num_targets = num_targets = 0
self.tx_amp_tuner = tx_amp_tuner = tx_amp
self.threshold_dB_tuner = threshold_dB_tuner = threshold_dB
self.speed_textbox = speed_textbox = target_speed_vector
self.rx_gain_tuner = rx_gain_tuner = rx_gain
self.num_targets_textbox = num_targets_textbox = num_targets
self.max_num_of_targets_tuner = max_num_of_targets_tuner = max_num_of_targets
self.lowpass_cutoff_freq_tuner = lowpass_cutoff_freq_tuner = lowpass_cutoff_freq
self.highpass_cutoff_freq_tuner = highpass_cutoff_freq_tuner = highpass_cutoff_freq
self.doppler_signal_bw_tuner = doppler_signal_bw_tuner = doppler_signal_bw
self.direction_textbox = direction_textbox = target_direction_vector
self.angle_tuner = angle_tuner = angle
self.RF_tuner = RF_tuner = RF
##################################################
# Blocks
##################################################
_tx_amp_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._tx_amp_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
label="TX Signal Amp",
converter=forms.float_converter(),
proportion=0,
)
self._tx_amp_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
minimum=0,
maximum=1,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_tx_amp_tuner_sizer, 0, 8, 1, 21)
_threshold_dB_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._threshold_dB_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
label="Detected Target Threshold (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._threshold_dB_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
minimum=-90,
maximum=-30,
num_steps=60,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_threshold_dB_tuner_sizer, 2, 0, 1, 8)
self.speed_vector_probe = blocks.probe_signal_vf(max_num_of_targets)
_rx_gain_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._rx_gain_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
label="USRP RX Gain (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._rx_gain_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
minimum=0,
maximum=30.5 + 62,
num_steps=185,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_rx_gain_tuner_sizer, 0, 0, 1, 8)
self.notebook = self.notebook = wx.Notebook(self.GetWin(),
style=wx.NB_TOP)
self.notebook.AddPage(grc_wxgui.Panel(self.notebook),
"FFT CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook),
"Frequency/Time CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook),
"FFT CW Doppler Radar Receiver Full Spectrum")
self.GridAdd(self.notebook, 6, 0, 13, 53)
_max_num_of_targets_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._max_num_of_targets_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
label="Maximum Number of Targets",
converter=forms.int_converter(),
proportion=0,
)
self._max_num_of_targets_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=int,
proportion=1,
)
self.GridAdd(_max_num_of_targets_tuner_sizer, 2, 8, 1, 21)
_lowpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._lowpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
label="Low-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._lowpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
minimum=0,
maximum=3000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_lowpass_cutoff_freq_tuner_sizer, 1, 29, 1, 24)
_highpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._highpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
label="High-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._highpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
minimum=0,
maximum=1600,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_highpass_cutoff_freq_tuner_sizer, 0, 29, 1, 24)
_doppler_signal_bw_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._doppler_signal_bw_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
label="Doppler Spectrum Bandwidth (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._doppler_signal_bw_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_doppler_signal_bw_tuner_sizer, 2, 29, 1, 24)
self.direction_vector_probe = blocks.probe_signal_vi(
max_num_of_targets)
_angle_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._angle_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
label="Angle of Approach of the Target (Deg)",
converter=forms.float_converter(),
proportion=0,
)
self._angle_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
minimum=0,
maximum=89,
num_steps=890,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_angle_tuner_sizer, 1, 8, 1, 21)
_RF_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._RF_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
label="Radar Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._RF_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
minimum=2.4e9,
maximum=2.5e9,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_RF_tuner_sizer, 1, 0, 1, 8)
self.wxgui_waterfallsink = waterfallsink2.waterfall_sink_c(
self.notebook.GetPage(1).GetWin(),
baseband_freq=0,
dynamic_range=100,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=100,
average=False,
avg_alpha=None,
title="Time/Frequency CW Doppler Radar Receiver",
win=window.blackmanharris,
)
self.notebook.GetPage(1).Add(self.wxgui_waterfallsink.win)
self.wxgui_fftsink2_full_spectrum = fftsink2.fft_sink_c(
self.notebook.GetPage(2).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=4096,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver Full Spectrum",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(2).Add(self.wxgui_fftsink2_full_spectrum.win)
self.wxgui_fftsink = fftsink2.fft_sink_c(
self.notebook.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=100,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver ",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(0).Add(self.wxgui_fftsink.win)
self.usrp_transmitter = uhd.usrp_sink(
",".join(('addr=192.168.10.2', "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_transmitter.set_clock_source("internal", 0)
self.usrp_transmitter.set_samp_rate(samp_rate)
self.usrp_transmitter.set_center_freq(RF_tuner, 0)
self.usrp_transmitter.set_gain(0, 0)
self.usrp_transmitter.set_antenna("TX/RX", 0)
self.usrp_receiver = uhd.usrp_source(
",".join(('addr=192.168.10.3', "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_receiver.set_clock_source("mimo", 0)
self.usrp_receiver.set_time_source("mimo", 0)
self.usrp_receiver.set_samp_rate(samp_rate)
self.usrp_receiver.set_center_freq(
uhd.tune_request(RF_tuner, lo_offset_freq), 0)
self.usrp_receiver.set_gain(rx_gain_tuner, 0)
self.usrp_receiver.set_antenna("J1", 0)
self.usrp_receiver.set_bandwidth(15e6, 0)
def _target_speed_vector_probe():
while True:
val = self.speed_vector_probe.level()
try:
########################################################
#Code to tranlate the vector of speeds to strings:
speed = ""
if val[0] == 0: #if the value is 0 there is no target in sight.
speed = "No Target Detected"
elif val[0] != 0:
for i in range(len(val)):
if val[i] != 0:
speed = speed + "Target " + str(
i + 1) + ": " + str(round(val[i],
2)) + " Kph\t"
self.set_target_speed_vector(speed)
########################################################
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_speed_vector_thread = threading.Thread(
target=_target_speed_vector_probe)
_target_speed_vector_thread.daemon = True
_target_speed_vector_thread.start()
def _target_direction_vector_probe():
while True:
val = self.direction_vector_probe.level()
try:
########################################################
#Code to tranlate the vector of directions to strings:
direction = ""
if val[0] == 0:
direction = "No Target Detected"
elif val[0] != 0: #if the value is 0 there is no target in sight.
for i in range(len(val)):
if val[i] == 1: #if the value is 1 the target is approaching.
direction = direction + "Target " + str(
i + 1) + ": " + "Approaching\t"
elif val[
i] == 2: #if the value is 2 the target is receding.
direction = direction + "Target " + str(
i + 1) + ": " + "Receding\t"
self.set_target_direction_vector(direction)
########################################################
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_direction_vector_thread = threading.Thread(
target=_target_direction_vector_probe)
_target_direction_vector_thread.daemon = True
_target_direction_vector_thread.start()
self._speed_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.speed_textbox,
callback=self.set_speed_textbox,
label="Targets Speed (Kph)",
converter=forms.str_converter(),
)
self.GridAdd(self._speed_textbox_text_box, 4, 0, 1, 53)
self.rational_resampler = filter.rational_resampler_ccc(
interpolation=1,
decimation=int(samp_rate / samp_rate_sink),
taps=None,
fractional_bw=None,
)
self._num_targets_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.num_targets_textbox,
callback=self.set_num_targets_textbox,
label="Number of Targets Detected",
converter=forms.int_converter(),
)
self.GridAdd(self._num_targets_textbox_text_box, 3, 0, 1, 4)
self.num_targets_probe = blocks.probe_signal_i()
def _num_targets_probe():
while True:
val = self.num_targets_probe.level()
try:
self.set_num_targets(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_num_targets_thread = threading.Thread(target=_num_targets_probe)
_num_targets_thread.daemon = True
_num_targets_thread.start()
self.fft_vxx_0 = fft.fft_vcc(fft_len, True,
(window.blackmanharris(fft_len)), True, 1)
self._direction_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.direction_textbox,
callback=self.set_direction_textbox,
label="Targets Direction",
converter=forms.str_converter(),
)
self.GridAdd(self._direction_textbox_text_box, 5, 0, 1, 53)
self.cwradar_vector_flip_ff = cwradar.vector_flip_ff(fft_len / 2)
self.cwradar_doppler_velocity_multiple_targets_ff_0 = cwradar.doppler_velocity_multiple_targets_ff(
fft_len / 2, samp_rate, RF_tuner, threshold_dB_tuner, angle_tuner,
lowpass_cutoff_freq_tuner, highpass_cutoff_freq_tuner,
max_num_of_targets_tuner, doppler_signal_bw_tuner)
self.complex_to_mag = blocks.complex_to_mag(fft_len)
self.blocks_vector_to_stream_0_0 = blocks.vector_to_stream(
gr.sizeof_float * 1, fft_len)
self.blocks_vector_to_stream_0 = blocks.vector_to_stream(
gr.sizeof_float * 1, fft_len)
self.blocks_stream_to_vector_1_0 = blocks.stream_to_vector(
gr.sizeof_float * 1, fft_len / 2)
self.blocks_stream_to_vector_1 = blocks.stream_to_vector(
gr.sizeof_float * 1, fft_len / 2)
self.blocks_stream_to_vector_0 = blocks.stream_to_vector(
gr.sizeof_gr_complex * 1, fft_len)
self.blocks_keep_m_in_n_0_0 = blocks.keep_m_in_n(
gr.sizeof_float, fft_len / 2, fft_len, fft_len / 2)
self.blocks_keep_m_in_n_0 = blocks.keep_m_in_n(gr.sizeof_float,
fft_len / 2, fft_len, 0)
self.analog_sig_source_x_0 = analog.sig_source_c(
samp_rate, analog.GR_COS_WAVE, 0, tx_amp_tuner, 0)
self.DC_filter_0 = blocks.multiply_const_vff(
([0] * DC_filter_num_elements + [1] *
((fft_len / 2) - DC_filter_num_elements)))
self.DC_filter = blocks.multiply_const_vff(
([0] * DC_filter_num_elements + [1] *
((fft_len / 2) - DC_filter_num_elements)))
##################################################
# Connections
##################################################
self.connect((self.complex_to_mag, 0),
(self.blocks_vector_to_stream_0_0, 0))
self.connect((self.complex_to_mag, 0),
(self.blocks_vector_to_stream_0, 0))
self.connect((self.DC_filter, 0),
(self.cwradar_doppler_velocity_multiple_targets_ff_0, 0))
self.connect((self.DC_filter_0, 0),
(self.cwradar_doppler_velocity_multiple_targets_ff_0, 1))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff_0, 2),
(self.num_targets_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff_0, 1),
(self.direction_vector_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff_0, 0),
(self.speed_vector_probe, 0))
self.connect((self.blocks_vector_to_stream_0_0, 0),
(self.blocks_keep_m_in_n_0_0, 0))
self.connect((self.blocks_keep_m_in_n_0, 0),
(self.blocks_stream_to_vector_1, 0))
self.connect((self.blocks_keep_m_in_n_0_0, 0),
(self.blocks_stream_to_vector_1_0, 0))
self.connect((self.blocks_vector_to_stream_0, 0),
(self.blocks_keep_m_in_n_0, 0))
self.connect((self.blocks_stream_to_vector_1_0, 0),
(self.DC_filter_0, 0))
self.connect((self.blocks_stream_to_vector_1, 0),
(self.cwradar_vector_flip_ff, 0))
self.connect((self.cwradar_vector_flip_ff, 0), (self.DC_filter, 0))
self.connect((self.usrp_receiver, 0),
(self.wxgui_fftsink2_full_spectrum, 0))
self.connect((self.usrp_receiver, 0), (self.rational_resampler, 0))
self.connect((self.rational_resampler, 0),
(self.wxgui_waterfallsink, 0))
self.connect((self.rational_resampler, 0), (self.wxgui_fftsink, 0))
self.connect((self.fft_vxx_0, 0), (self.complex_to_mag, 0))
self.connect((self.blocks_stream_to_vector_0, 0), (self.fft_vxx_0, 0))
self.connect((self.usrp_receiver, 0),
(self.blocks_stream_to_vector_0, 0))
self.connect((self.analog_sig_source_x_0, 0),
(self.usrp_transmitter, 0))
def __init__(self, angle=0, samp_rate=1e6, fft_len=pow(2,20), samp_rate_sink=8000, tx_amp=10e-3, max_num_of_targets=10, lowpass_cutoff_freq=1700, RF=2.49e9, speed_samp_rate=1, DC_filter_num_elements=4, threshold_dB=-70, rx_gain=0, highpass_cutoff_freq=0, doppler_signal_bw=20):
grc_wxgui.top_block_gui.__init__(self, title="CW Doppler Radar Simulator Multiple Targets")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Parameters
##################################################
self.angle = angle
self.samp_rate = samp_rate
self.fft_len = fft_len
self.samp_rate_sink = samp_rate_sink
self.tx_amp = tx_amp
self.max_num_of_targets = max_num_of_targets
self.lowpass_cutoff_freq = lowpass_cutoff_freq
self.RF = RF
self.speed_samp_rate = speed_samp_rate
self.DC_filter_num_elements = DC_filter_num_elements
self.threshold_dB = threshold_dB
self.rx_gain = rx_gain
self.highpass_cutoff_freq = highpass_cutoff_freq
self.doppler_signal_bw = doppler_signal_bw
##################################################
# Variables
##################################################
self.target_speed_vector = target_speed_vector = 0
self.target_direction_vector = target_direction_vector = 0
self.num_targets = num_targets = 0
self.tx_amp_tuner = tx_amp_tuner = tx_amp
self.threshold_dB_tuner = threshold_dB_tuner = threshold_dB
self.speed_textbox = speed_textbox = target_speed_vector
self.rx_gain_tuner = rx_gain_tuner = rx_gain
self.num_targets_textbox = num_targets_textbox = num_targets
self.max_num_of_targets_tuner = max_num_of_targets_tuner = max_num_of_targets
self.lowpass_cutoff_freq_tuner = lowpass_cutoff_freq_tuner = lowpass_cutoff_freq
self.highpass_cutoff_freq_tuner = highpass_cutoff_freq_tuner = highpass_cutoff_freq
self.doppler_signal_bw_tuner = doppler_signal_bw_tuner = doppler_signal_bw
self.doppler_freq_sim_tuner = doppler_freq_sim_tuner = 100
self.direction_textbox = direction_textbox = target_direction_vector
self.angle_tuner = angle_tuner = angle
self.RF_tuner = RF_tuner = RF
##################################################
# Blocks
##################################################
_tx_amp_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._tx_amp_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
label="TX Signal Amp",
converter=forms.float_converter(),
proportion=0,
)
self._tx_amp_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
minimum=0,
maximum=100e-3,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_tx_amp_tuner_sizer, 0, 8, 1, 21)
_threshold_dB_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._threshold_dB_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
label="Detected Target Threshold (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._threshold_dB_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
minimum=-90,
maximum=-30,
num_steps=60,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_threshold_dB_tuner_sizer, 2, 0, 1, 8)
self.speed_vector_probe = blocks.probe_signal_vf(max_num_of_targets)
self.notebook = self.notebook = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "FFT CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "Frequency/Time CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "FFT CW Doppler Radar Receiver Full Spectrum")
self.GridAdd(self.notebook, 6, 0, 13, 53)
_max_num_of_targets_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._max_num_of_targets_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
label="Maximum Number of Targets",
converter=forms.int_converter(),
proportion=0,
)
self._max_num_of_targets_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=int,
proportion=1,
)
self.GridAdd(_max_num_of_targets_tuner_sizer, 2, 8, 1, 21)
_lowpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._lowpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
label="Low-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._lowpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
minimum=0,
maximum=3000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_lowpass_cutoff_freq_tuner_sizer, 1, 29, 1, 24)
_highpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._highpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
label="High-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._highpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
minimum=0,
maximum=1600,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_highpass_cutoff_freq_tuner_sizer, 0, 29, 1, 24)
_doppler_signal_bw_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._doppler_signal_bw_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
label="Doppler Spectrum Bandwidth (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._doppler_signal_bw_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_doppler_signal_bw_tuner_sizer, 2, 29, 1, 24)
_doppler_freq_sim_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._doppler_freq_sim_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_doppler_freq_sim_tuner_sizer,
value=self.doppler_freq_sim_tuner,
callback=self.set_doppler_freq_sim_tuner,
label="Doppler Frequency Simulator (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._doppler_freq_sim_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_doppler_freq_sim_tuner_sizer,
value=self.doppler_freq_sim_tuner,
callback=self.set_doppler_freq_sim_tuner,
minimum=-2000,
maximum=2000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_doppler_freq_sim_tuner_sizer, 3, 29, 1, 24)
self.direction_vector_probe = blocks.probe_signal_vi(max_num_of_targets)
_angle_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._angle_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
label="Angle of Approach of the Target (Deg)",
converter=forms.float_converter(),
proportion=0,
)
self._angle_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
minimum=0,
maximum=89,
num_steps=890,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_angle_tuner_sizer, 1, 8, 1, 21)
_RF_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._RF_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
label="Radar Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._RF_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
minimum=2.4e9,
maximum=2.5e9,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_RF_tuner_sizer, 1, 0, 1, 8)
self.wxgui_waterfallsink2_time_frequency = waterfallsink2.waterfall_sink_c(
self.notebook.GetPage(1).GetWin(),
baseband_freq=0,
dynamic_range=100,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=15,
average=True,
avg_alpha=None,
title="Time/Frequency CW Doppler Radar Receiver",
win=window.blackmanharris,
)
self.notebook.GetPage(1).Add(self.wxgui_waterfallsink2_time_frequency.win)
self.wxgui_fftsink2_full_spectrum = fftsink2.fft_sink_c(
self.notebook.GetPage(2).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=4096,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver Full Spectrum",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(2).Add(self.wxgui_fftsink2_full_spectrum.win)
self.wxgui_fftsink2 = fftsink2.fft_sink_c(
self.notebook.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver ",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(0).Add(self.wxgui_fftsink2.win)
self.vector_to_stream_positive = blocks.vector_to_stream(gr.sizeof_float*1, fft_len)
self.vector_to_stream_negative = blocks.vector_to_stream(gr.sizeof_float*1, fft_len)
self.tx_signal = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, 0, 1, 0)
self.throtle_block = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
def _target_speed_vector_probe():
while True:
val = self.speed_vector_probe.level()
try:
self.set_target_speed_vector(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_speed_vector_thread = threading.Thread(target=_target_speed_vector_probe)
_target_speed_vector_thread.daemon = True
_target_speed_vector_thread.start()
def _target_direction_vector_probe():
while True:
val = self.direction_vector_probe.level()
try:
self.set_target_direction_vector(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_direction_vector_thread = threading.Thread(target=_target_direction_vector_probe)
_target_direction_vector_thread.daemon = True
_target_direction_vector_thread.start()
self.stream_to_vector_positive = blocks.stream_to_vector(gr.sizeof_float*1, fft_len/2)
self.stream_to_vector_negative = blocks.stream_to_vector(gr.sizeof_float*1, fft_len/2)
self.stream_to_vector_for_fft = blocks.stream_to_vector(gr.sizeof_gr_complex*1, fft_len)
self._speed_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.speed_textbox,
callback=self.set_speed_textbox,
label="Targets Speed (Kph)",
converter=forms.str_converter(),
)
self.GridAdd(self._speed_textbox_text_box, 4, 0, 1, 53)
self.rx_signal_2 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, doppler_freq_sim_tuner+15, tx_amp_tuner-5e-3, 0)
self.rx_signal_1 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, doppler_freq_sim_tuner-1300, tx_amp+10e-3, 0)
self.rx_signal_0 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, doppler_freq_sim_tuner, tx_amp_tuner, 0)
_rx_gain_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._rx_gain_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
label="USRP RX Gain (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._rx_gain_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
minimum=0,
maximum=70,
num_steps=70,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_rx_gain_tuner_sizer, 0, 0, 1, 8)
self.rational_resampler = filter.rational_resampler_ccc(
interpolation=1,
decimation=int(samp_rate/samp_rate_sink),
taps=None,
fractional_bw=None,
)
self._num_targets_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.num_targets_textbox,
callback=self.set_num_targets_textbox,
label="Number of Targets Detected",
converter=forms.int_converter(),
)
self.GridAdd(self._num_targets_textbox_text_box, 3, 0, 1, 4)
self.num_targets_probe = blocks.probe_signal_i()
def _num_targets_probe():
while True:
val = self.num_targets_probe.level()
try:
self.set_num_targets(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_num_targets_thread = threading.Thread(target=_num_targets_probe)
_num_targets_thread.daemon = True
_num_targets_thread.start()
self.mixer = blocks.multiply_vcc(1)
self.keep_m_in_n_positive = blocks.keep_m_in_n(gr.sizeof_float, fft_len/2, fft_len, fft_len/2)
self.keep_m_in_n_negative = blocks.keep_m_in_n(gr.sizeof_float, fft_len/2, fft_len, 0)
self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (window.blackmanharris(fft_len)), True, 1)
self._direction_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.direction_textbox,
callback=self.set_direction_textbox,
label="Targets Direction",
converter=forms.str_converter(),
)
self.GridAdd(self._direction_textbox_text_box, 5, 0, 1, 53)
self.cwradar_vector_flip_ff = cwradar.vector_flip_ff(fft_len/2)
self.cwradar_doppler_velocity_multiple_targets_ff = cwradar.doppler_velocity_multiple_targets_ff(fft_len/2, samp_rate, RF_tuner, threshold_dB_tuner, angle_tuner, lowpass_cutoff_freq_tuner, highpass_cutoff_freq_tuner, max_num_of_targets_tuner, doppler_signal_bw_tuner)
self.blocks_complex_to_mag = blocks.complex_to_mag(fft_len)
self.awgn_channel_simulator = analog.noise_source_c(analog.GR_GAUSSIAN, 1e-3, 0)
self.adder_2 = blocks.add_vcc(1)
self.adder_1 = blocks.add_vcc(1)
self.DC_filter_positive = blocks.multiply_const_vff(([0]*DC_filter_num_elements+[1]*((fft_len/2)-DC_filter_num_elements)))
self.DC_filter_negative = blocks.multiply_const_vff(([0]*DC_filter_num_elements+[1]*((fft_len/2)-DC_filter_num_elements)))
##################################################
# Connections
##################################################
self.connect((self.DC_filter_negative, 0), (self.cwradar_doppler_velocity_multiple_targets_ff, 0))
self.connect((self.DC_filter_positive, 0), (self.cwradar_doppler_velocity_multiple_targets_ff, 1))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff, 2), (self.num_targets_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff, 1), (self.direction_vector_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff, 0), (self.speed_vector_probe, 0))
self.connect((self.awgn_channel_simulator, 0), (self.adder_2, 0))
self.connect((self.tx_signal, 0), (self.adder_2, 1))
self.connect((self.adder_2, 0), (self.mixer, 0))
self.connect((self.awgn_channel_simulator, 0), (self.adder_1, 0))
self.connect((self.mixer, 0), (self.throtle_block, 0))
self.connect((self.mixer, 0), (self.stream_to_vector_for_fft, 0))
self.connect((self.throtle_block, 0), (self.wxgui_fftsink2_full_spectrum, 0))
self.connect((self.throtle_block, 0), (self.rational_resampler, 0))
self.connect((self.adder_1, 0), (self.mixer, 1))
self.connect((self.rational_resampler, 0), (self.wxgui_waterfallsink2_time_frequency, 0))
self.connect((self.stream_to_vector_for_fft, 0), (self.fft_vxx_0, 0))
self.connect((self.fft_vxx_0, 0), (self.blocks_complex_to_mag, 0))
self.connect((self.blocks_complex_to_mag, 0), (self.vector_to_stream_negative, 0))
self.connect((self.blocks_complex_to_mag, 0), (self.vector_to_stream_positive, 0))
self.connect((self.vector_to_stream_positive, 0), (self.keep_m_in_n_positive, 0))
self.connect((self.keep_m_in_n_negative, 0), (self.stream_to_vector_negative, 0))
self.connect((self.keep_m_in_n_positive, 0), (self.stream_to_vector_positive, 0))
self.connect((self.vector_to_stream_negative, 0), (self.keep_m_in_n_negative, 0))
self.connect((self.stream_to_vector_positive, 0), (self.DC_filter_positive, 0))
self.connect((self.stream_to_vector_negative, 0), (self.cwradar_vector_flip_ff, 0))
self.connect((self.cwradar_vector_flip_ff, 0), (self.DC_filter_negative, 0))
self.connect((self.rx_signal_1, 0), (self.adder_1, 3))
self.connect((self.rx_signal_0, 0), (self.adder_1, 2))
self.connect((self.tx_signal, 0), (self.adder_1, 1))
self.connect((self.rx_signal_2, 0), (self.adder_1, 4))
self.connect((self.rational_resampler, 0), (self.wxgui_fftsink2, 0))
def __init__(self, RF=2.49e9, lowpass_cutoff_freq=1700, speed_samp_rate=1, fft_len=pow(2,20), angle=0, DC_filter_num_elements=4, samp_rate_sink=8000, samp_rate=1e6, max_num_of_targets=10, lo_offset_freq=1e6, highpass_cutoff_freq=0, doppler_signal_bw=20, threshold_dB=-70, rx_gain=30.5, tx_amp=0):
grc_wxgui.top_block_gui.__init__(self, title="CW Radar Multiple Targets Receiver")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Parameters
##################################################
self.RF = RF
self.lowpass_cutoff_freq = lowpass_cutoff_freq
self.speed_samp_rate = speed_samp_rate
self.fft_len = fft_len
self.angle = angle
self.DC_filter_num_elements = DC_filter_num_elements
self.samp_rate_sink = samp_rate_sink
self.samp_rate = samp_rate
self.max_num_of_targets = max_num_of_targets
self.lo_offset_freq = lo_offset_freq
self.highpass_cutoff_freq = highpass_cutoff_freq
self.doppler_signal_bw = doppler_signal_bw
self.threshold_dB = threshold_dB
self.rx_gain = rx_gain
self.tx_amp = tx_amp
##################################################
# Variables
##################################################
self.target_speed_vector = target_speed_vector = 0
self.target_direction_vector = target_direction_vector = 0
self.num_targets = num_targets = 0
self.tx_amp_tuner = tx_amp_tuner = tx_amp
self.threshold_dB_tuner = threshold_dB_tuner = threshold_dB
self.speed_textbox = speed_textbox = target_speed_vector
self.rx_gain_tuner = rx_gain_tuner = rx_gain
self.num_targets_textbox = num_targets_textbox = num_targets
self.max_num_of_targets_tuner = max_num_of_targets_tuner = max_num_of_targets
self.lowpass_cutoff_freq_tuner = lowpass_cutoff_freq_tuner = lowpass_cutoff_freq
self.highpass_cutoff_freq_tuner = highpass_cutoff_freq_tuner = highpass_cutoff_freq
self.doppler_signal_bw_tuner = doppler_signal_bw_tuner = doppler_signal_bw
self.direction_textbox = direction_textbox = target_direction_vector
self.angle_tuner = angle_tuner = angle
self.RF_tuner = RF_tuner = RF
##################################################
# Blocks
##################################################
_threshold_dB_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._threshold_dB_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
label="Detected Target Threshold (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._threshold_dB_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_threshold_dB_tuner_sizer,
value=self.threshold_dB_tuner,
callback=self.set_threshold_dB_tuner,
minimum=-90,
maximum=-30,
num_steps=60,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_threshold_dB_tuner_sizer, 2, 0, 1, 8)
self.speed_vector_probe = blocks.probe_signal_vf(max_num_of_targets)
_rx_gain_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._rx_gain_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
label="USRP RX Gain (dB)",
converter=forms.float_converter(),
proportion=0,
)
self._rx_gain_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_rx_gain_tuner_sizer,
value=self.rx_gain_tuner,
callback=self.set_rx_gain_tuner,
minimum=0,
maximum=30.5 + 62,
num_steps=185,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_rx_gain_tuner_sizer, 0, 0, 1, 8)
self.notebook = self.notebook = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "FFT CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "Frequency/Time CW Doppler Radar Receiver")
self.notebook.AddPage(grc_wxgui.Panel(self.notebook), "FFT CW Doppler Radar Receiver Full Spectrum")
self.GridAdd(self.notebook, 6, 0, 13, 53)
_max_num_of_targets_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._max_num_of_targets_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
label="Maximum Number of Targets",
converter=forms.int_converter(),
proportion=0,
)
self._max_num_of_targets_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_max_num_of_targets_tuner_sizer,
value=self.max_num_of_targets_tuner,
callback=self.set_max_num_of_targets_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=int,
proportion=1,
)
self.GridAdd(_max_num_of_targets_tuner_sizer, 2, 8, 1, 21)
_lowpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._lowpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
label="Low-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._lowpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_lowpass_cutoff_freq_tuner_sizer,
value=self.lowpass_cutoff_freq_tuner,
callback=self.set_lowpass_cutoff_freq_tuner,
minimum=0,
maximum=3000,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_lowpass_cutoff_freq_tuner_sizer, 1, 29, 1, 24)
_highpass_cutoff_freq_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._highpass_cutoff_freq_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
label="High-Pass Cutoff Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._highpass_cutoff_freq_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_highpass_cutoff_freq_tuner_sizer,
value=self.highpass_cutoff_freq_tuner,
callback=self.set_highpass_cutoff_freq_tuner,
minimum=0,
maximum=1600,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_highpass_cutoff_freq_tuner_sizer, 0, 29, 1, 24)
_doppler_signal_bw_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._doppler_signal_bw_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
label="Doppler Spectrum Bandwidth (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._doppler_signal_bw_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_doppler_signal_bw_tuner_sizer,
value=self.doppler_signal_bw_tuner,
callback=self.set_doppler_signal_bw_tuner,
minimum=0,
maximum=100,
num_steps=100,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_doppler_signal_bw_tuner_sizer, 2, 29, 1, 24)
self.direction_vector_probe = blocks.probe_signal_vi(max_num_of_targets)
_angle_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._angle_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
label="Angle of Approach of the Target (Deg)",
converter=forms.float_converter(),
proportion=0,
)
self._angle_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_angle_tuner_sizer,
value=self.angle_tuner,
callback=self.set_angle_tuner,
minimum=0,
maximum=89,
num_steps=890,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_angle_tuner_sizer, 1, 8, 1, 21)
_RF_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._RF_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
label="Radar Frequency (Hz)",
converter=forms.float_converter(),
proportion=0,
)
self._RF_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_RF_tuner_sizer,
value=self.RF_tuner,
callback=self.set_RF_tuner,
minimum=2.4e9,
maximum=2.5e9,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_RF_tuner_sizer, 1, 0, 1, 8)
self.wxgui_waterfallsink = waterfallsink2.waterfall_sink_c(
self.notebook.GetPage(1).GetWin(),
baseband_freq=0,
dynamic_range=100,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=100,
average=False,
avg_alpha=None,
title="Time/Frequency CW Doppler Radar Receiver",
win=window.blackmanharris,
)
self.notebook.GetPage(1).Add(self.wxgui_waterfallsink.win)
self.wxgui_fftsink2_full_spectrum = fftsink2.fft_sink_c(
self.notebook.GetPage(2).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=4096,
fft_rate=15,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver Full Spectrum",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(2).Add(self.wxgui_fftsink2_full_spectrum.win)
self.wxgui_fftsink = fftsink2.fft_sink_c(
self.notebook.GetPage(0).GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate_sink,
fft_size=1024,
fft_rate=100,
average=False,
avg_alpha=None,
title="FFT CW Doppler Radar Receiver ",
peak_hold=False,
win=window.blackmanharris,
)
self.notebook.GetPage(0).Add(self.wxgui_fftsink.win)
self.usrp_receiver = uhd.usrp_source(
",".join(('addr=192.168.10.3', "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_receiver.set_clock_source("external", 0)
self.usrp_receiver.set_samp_rate(samp_rate)
self.usrp_receiver.set_center_freq(uhd.tune_request(RF_tuner, lo_offset_freq), 0)
self.usrp_receiver.set_gain(rx_gain_tuner, 0)
self.usrp_receiver.set_antenna("J1", 0)
_tx_amp_tuner_sizer = wx.BoxSizer(wx.VERTICAL)
self._tx_amp_tuner_text_box = forms.text_box(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
label="TX Signal Amp",
converter=forms.float_converter(),
proportion=0,
)
self._tx_amp_tuner_slider = forms.slider(
parent=self.GetWin(),
sizer=_tx_amp_tuner_sizer,
value=self.tx_amp_tuner,
callback=self.set_tx_amp_tuner,
minimum=0,
maximum=1,
num_steps=1000,
style=wx.SL_HORIZONTAL,
cast=float,
proportion=1,
)
self.GridAdd(_tx_amp_tuner_sizer, 0, 8, 1, 21)
def _target_speed_vector_probe():
while True:
val = self.speed_vector_probe.level()
try:
########################################################
#Code to tranlate the vector of speeds to strings:
speed = ""
if val[0] == 0: #if the value is 0 there is no target in sight.
speed = "No Target Detected"
elif val[0] != 0:
for i in range(len(val)):
if val[i] != 0:
speed = speed + "Target " + str(i+1) + ": " + str(round(val[i],2)) + " Kph\t"
self.set_target_speed_vector(speed)
########################################################
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_speed_vector_thread = threading.Thread(target=_target_speed_vector_probe)
_target_speed_vector_thread.daemon = True
_target_speed_vector_thread.start()
def _target_direction_vector_probe():
while True:
val = self.direction_vector_probe.level()
try:
########################################################
#Code to tranlate the vector of directions to strings:
direction = ""
if val[0] == 0:
direction = "No Target Detected"
elif val[0] != 0: #if the value is 0 there is no target in sight.
for i in range(len(val)):
if val[i] == 1: #if the value is 1 the target is approaching.
direction = direction + "Target " + str(i+1) + ": " + "Approaching\t"
elif val[i] == 2: #if the value is 2 the target is receding.
direction = direction + "Target " + str(i+1) + ": " + "Receding\t"
self.set_target_direction_vector(direction)
########################################################
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_target_direction_vector_thread = threading.Thread(target=_target_direction_vector_probe)
_target_direction_vector_thread.daemon = True
_target_direction_vector_thread.start()
self._speed_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.speed_textbox,
callback=self.set_speed_textbox,
label="Targets Speed (Kph)",
converter=forms.str_converter(),
)
self.GridAdd(self._speed_textbox_text_box, 4, 0, 1, 53)
self.rational_resampler = filter.rational_resampler_ccc(
interpolation=1,
decimation=int(samp_rate/samp_rate_sink),
taps=None,
fractional_bw=None,
)
self._num_targets_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.num_targets_textbox,
callback=self.set_num_targets_textbox,
label="Number of Targets Detected",
converter=forms.int_converter(),
)
self.GridAdd(self._num_targets_textbox_text_box, 3, 0, 1, 4)
self.num_targets_probe = blocks.probe_signal_i()
def _num_targets_probe():
while True:
val = self.num_targets_probe.level()
try:
self.set_num_targets(val)
except AttributeError:
pass
time.sleep(1.0 / (speed_samp_rate))
_num_targets_thread = threading.Thread(target=_num_targets_probe)
_num_targets_thread.daemon = True
_num_targets_thread.start()
self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (window.blackmanharris(fft_len)), True, 1)
self._direction_textbox_text_box = forms.text_box(
parent=self.GetWin(),
value=self.direction_textbox,
callback=self.set_direction_textbox,
label="Targets Direction",
converter=forms.str_converter(),
)
self.GridAdd(self._direction_textbox_text_box, 5, 0, 1, 53)
self.cwradar_vector_flip_ff = cwradar.vector_flip_ff(fft_len/2)
self.cwradar_doppler_velocity_multiple_targets_ff_0 = cwradar.doppler_velocity_multiple_targets_ff(fft_len/2, samp_rate, RF_tuner, threshold_dB_tuner, angle_tuner, lowpass_cutoff_freq_tuner, highpass_cutoff_freq_tuner, max_num_of_targets_tuner, doppler_signal_bw_tuner)
self.complex_to_mag = blocks.complex_to_mag(fft_len)
self.blocks_vector_to_stream_0_0 = blocks.vector_to_stream(gr.sizeof_float*1, fft_len)
self.blocks_vector_to_stream_0 = blocks.vector_to_stream(gr.sizeof_float*1, fft_len)
self.blocks_stream_to_vector_1_0 = blocks.stream_to_vector(gr.sizeof_float*1, fft_len/2)
self.blocks_stream_to_vector_1 = blocks.stream_to_vector(gr.sizeof_float*1, fft_len/2)
self.blocks_stream_to_vector_0 = blocks.stream_to_vector(gr.sizeof_gr_complex*1, fft_len)
self.blocks_keep_m_in_n_0_0 = blocks.keep_m_in_n(gr.sizeof_float, fft_len/2, fft_len, fft_len/2)
self.blocks_keep_m_in_n_0 = blocks.keep_m_in_n(gr.sizeof_float, fft_len/2, fft_len, 0)
self.DC_filter_0 = blocks.multiply_const_vff(([0]*DC_filter_num_elements+[1]*((fft_len/2)-DC_filter_num_elements)))
self.DC_filter = blocks.multiply_const_vff(([0]*DC_filter_num_elements+[1]*((fft_len/2)-DC_filter_num_elements)))
##################################################
# Connections
##################################################
self.connect((self.complex_to_mag, 0), (self.blocks_vector_to_stream_0_0, 0))
self.connect((self.complex_to_mag, 0), (self.blocks_vector_to_stream_0, 0))
self.connect((self.usrp_receiver, 0), (self.blocks_stream_to_vector_0, 0))
self.connect((self.blocks_stream_to_vector_0, 0), (self.fft_vxx_0, 0))
self.connect((self.fft_vxx_0, 0), (self.complex_to_mag, 0))
self.connect((self.rational_resampler, 0), (self.wxgui_fftsink, 0))
self.connect((self.rational_resampler, 0), (self.wxgui_waterfallsink, 0))
self.connect((self.usrp_receiver, 0), (self.rational_resampler, 0))
self.connect((self.usrp_receiver, 0), (self.wxgui_fftsink2_full_spectrum, 0))
self.connect((self.DC_filter, 0), (self.cwradar_doppler_velocity_multiple_targets_ff_0, 0))
self.connect((self.DC_filter_0, 0), (self.cwradar_doppler_velocity_multiple_targets_ff_0, 1))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff_0, 2), (self.num_targets_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff_0, 1), (self.direction_vector_probe, 0))
self.connect((self.cwradar_doppler_velocity_multiple_targets_ff_0, 0), (self.speed_vector_probe, 0))
self.connect((self.blocks_vector_to_stream_0_0, 0), (self.blocks_keep_m_in_n_0_0, 0))
self.connect((self.blocks_keep_m_in_n_0, 0), (self.blocks_stream_to_vector_1, 0))
self.connect((self.blocks_keep_m_in_n_0_0, 0), (self.blocks_stream_to_vector_1_0, 0))
self.connect((self.blocks_vector_to_stream_0, 0), (self.blocks_keep_m_in_n_0, 0))
self.connect((self.blocks_stream_to_vector_1_0, 0), (self.DC_filter_0, 0))
self.connect((self.blocks_stream_to_vector_1, 0), (self.cwradar_vector_flip_ff, 0))
self.connect((self.cwradar_vector_flip_ff, 0), (self.DC_filter, 0))