def __init__(self, deframer_insync_frames=2, deframer_sync_check=True, viterbi_insync_frames=5, deframer_outsync_frames=5, viterbi_outsync_frames=20, viterbi_sync_check=True, viterbi_sync_threshold=0.1, satellite='GOES-LRIT', freq=1691.02e6, gain=23, decim=108, side="A", pll_alpha=0.005, symb_rate=293883, clock_alpha=0.005):
		grc_wxgui.top_block_gui.__init__(self, title="USRP LRIT Receiver - check signal quality")

		##################################################
		# Parameters
		##################################################
		self.deframer_insync_frames = deframer_insync_frames
		self.deframer_sync_check = deframer_sync_check
		self.viterbi_insync_frames = viterbi_insync_frames
		self.deframer_outsync_frames = deframer_outsync_frames
		self.viterbi_outsync_frames = viterbi_outsync_frames
		self.viterbi_sync_check = viterbi_sync_check
		self.viterbi_sync_threshold = viterbi_sync_threshold
		self.satellite = satellite
		self.freq = freq
		self.gain = gain
		self.decim = decim
		self.side = side
		self.pll_alpha = pll_alpha
		self.symb_rate = symb_rate
		self.clock_alpha = clock_alpha

		##################################################
		# Variables
		##################################################
		self.decim_tb = decim_tb = decim
		self.symb_rate_tb = symb_rate_tb = symb_rate
		self.samp_rate = samp_rate = 64e6/decim_tb
		self.viterbi_sync_threshold_text = viterbi_sync_threshold_text = viterbi_sync_threshold
		self.viterbi_sync_after_text = viterbi_sync_after_text = viterbi_insync_frames
		self.viterbi_outofsync_after_text = viterbi_outofsync_after_text = viterbi_outsync_frames
		self.viterbi_node_sync_text = viterbi_node_sync_text = viterbi_sync_check
		self.sps = sps = samp_rate/symb_rate_tb
		self.satellite_text = satellite_text = satellite
		self.samp_rate_st = samp_rate_st = samp_rate
		self.pll_alpha_sl = pll_alpha_sl = pll_alpha
		self.gain_tb = gain_tb = gain
		self.freq_tb = freq_tb = freq
		self.frames_file_text_inf = frames_file_text_inf = 'no output file'
		self.deframer_sync_after_text = deframer_sync_after_text = deframer_insync_frames
		self.deframer_nosync_after_text = deframer_nosync_after_text = deframer_outsync_frames
		self.deframer_check_sync_text = deframer_check_sync_text = deframer_sync_check
		self.datetime_text = datetime_text = strftime("%A, %B %d %Y %H:%M:%S", localtime())
		self.clock_alpha_sl = clock_alpha_sl = clock_alpha
		self.baseband_file_text_inf = baseband_file_text_inf = 'no output file'

		##################################################
		# Notebooks
		##################################################
		self.rx_ntb = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "USRP Receiver")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "PLL demodulator and Clock sync")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Viterbi decoder")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Deframer")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Output")
		self.Add(self.rx_ntb)

		##################################################
		# Controls
		##################################################
		self._decim_tb_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.decim_tb,
			callback=self.set_decim_tb,
			label="Decimation",
			converter=forms.int_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._decim_tb_text_box, 1, 3, 1, 1)
		self._symb_rate_tb_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			value=self.symb_rate_tb,
			callback=self.set_symb_rate_tb,
			label="Symbol rate",
			converter=forms.int_converter(),
		)
		self.rx_ntb.GetPage(1).GridAdd(self._symb_rate_tb_text_box, 2, 1, 1, 1)
		self._viterbi_sync_threshold_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_sync_threshold_text,
			callback=self.set_viterbi_sync_threshold_text,
			label="Viterbi node sync threshold [BER]",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_sync_threshold_text_static_text, 3, 0, 1, 1)
		self._viterbi_sync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_sync_after_text,
			callback=self.set_viterbi_sync_after_text,
			label="Valid frames for Viterbi decoder sync",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_sync_after_text_static_text, 4, 0, 1, 1)
		self._viterbi_outofsync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_outofsync_after_text,
			callback=self.set_viterbi_outofsync_after_text,
			label="Invalid frames for Viterbi decoder out of sync",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_outofsync_after_text_static_text, 5, 0, 1, 1)
		self._viterbi_node_sync_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_node_sync_text,
			callback=self.set_viterbi_node_sync_text,
			label="Viterbi node sync enable",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_node_sync_text_static_text, 2, 0, 1, 1)
		self._satellite_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.satellite_text,
			callback=self.set_satellite_text,
			label="Sat ",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._satellite_text_static_text, 1, 0, 1, 1)
		self._samp_rate_st_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.samp_rate_st,
			callback=self.set_samp_rate_st,
			label="Sample rate",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._samp_rate_st_static_text, 1, 4, 1, 1)
		_pll_alpha_sl_sizer = wx.BoxSizer(wx.VERTICAL)
		self._pll_alpha_sl_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_pll_alpha_sl_sizer,
			value=self.pll_alpha_sl,
			callback=self.set_pll_alpha_sl,
			label="PLL Alpha",
			converter=forms.float_converter(),
			proportion=0,
		)
		self._pll_alpha_sl_slider = forms.slider(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_pll_alpha_sl_sizer,
			value=self.pll_alpha_sl,
			callback=self.set_pll_alpha_sl,
			minimum=0.001,
			maximum=0.1,
			num_steps=100,
			style=wx.SL_HORIZONTAL,
			cast=float,
			proportion=1,
		)
		self.rx_ntb.GetPage(1).GridAdd(_pll_alpha_sl_sizer, 1, 0, 1, 1)
		self._gain_tb_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.gain_tb,
			callback=self.set_gain_tb,
			label="RX gain [dB]",
			converter=forms.int_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._gain_tb_text_box, 1, 2, 1, 1)
		self._freq_tb_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.freq_tb,
			callback=self.set_freq_tb,
			label="Frequency",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._freq_tb_text_box, 1, 1, 1, 1)
		self._frames_file_text_inf_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(4).GetWin(),
			value=self.frames_file_text_inf,
			callback=self.set_frames_file_text_inf,
			label="Frames filename",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(4).GridAdd(self._frames_file_text_inf_static_text, 3, 0, 1, 1)
		self._deframer_sync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(3).GetWin(),
			value=self.deframer_sync_after_text,
			callback=self.set_deframer_sync_after_text,
			label="Deframe sync after",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(3).GridAdd(self._deframer_sync_after_text_static_text, 3, 0, 1, 1)
		self._deframer_nosync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(3).GetWin(),
			value=self.deframer_nosync_after_text,
			callback=self.set_deframer_nosync_after_text,
			label="Deframer out of sync after",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(3).GridAdd(self._deframer_nosync_after_text_static_text, 4, 0, 1, 1)
		self._deframer_check_sync_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(3).GetWin(),
			value=self.deframer_check_sync_text,
			callback=self.set_deframer_check_sync_text,
			label="Deframer check sync enable",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(3).GridAdd(self._deframer_check_sync_text_static_text, 2, 0, 1, 1)
		self._datetime_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(4).GetWin(),
			value=self.datetime_text,
			callback=self.set_datetime_text,
			label="Local time of aquisition start",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(4).GridAdd(self._datetime_text_static_text, 1, 0, 1, 1)
		_clock_alpha_sl_sizer = wx.BoxSizer(wx.VERTICAL)
		self._clock_alpha_sl_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_clock_alpha_sl_sizer,
			value=self.clock_alpha_sl,
			callback=self.set_clock_alpha_sl,
			label="Clock alpha",
			converter=forms.float_converter(),
			proportion=0,
		)
		self._clock_alpha_sl_slider = forms.slider(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_clock_alpha_sl_sizer,
			value=self.clock_alpha_sl,
			callback=self.set_clock_alpha_sl,
			minimum=0.001,
			maximum=0.1,
			num_steps=100,
			style=wx.SL_HORIZONTAL,
			cast=float,
			proportion=1,
		)
		self.rx_ntb.GetPage(1).GridAdd(_clock_alpha_sl_sizer, 1, 1, 1, 1)
		self._baseband_file_text_inf_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(4).GetWin(),
			value=self.baseband_file_text_inf,
			callback=self.set_baseband_file_text_inf,
			label="Baseband filename",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(4).GridAdd(self._baseband_file_text_inf_static_text, 4, 0, 1, 1)

		##################################################
		# Blocks
		##################################################
		self.fec_decode_viterbi_bpsk_fb_0 = fec.decode_viterbi_bpsk_fb(viterbi_sync_check, viterbi_sync_threshold, viterbi_insync_frames, viterbi_outsync_frames, viterbi_outsync_frames*3)
		self.gr_agc_xx_0 = gr.agc_cc(10e-6, 1, 1.0/32767.0, 1.0)
		self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_cc(sps, clock_alpha_sl*clock_alpha_sl/4.0, 0.5, clock_alpha_sl, 0.05)
		self.gr_complex_to_real_0 = gr.complex_to_real(1)
		self.gr_costas_loop_cc_0 = gr.costas_loop_cc(pll_alpha_sl, pll_alpha_sl*pll_alpha_sl/4.0, 0.07, -0.07, 2)
		self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((1, ))
		self.gr_null_sink_0 = gr.null_sink(gr.sizeof_char*1)
		self.gr_packed_to_unpacked_xx_0 = gr.packed_to_unpacked_bb(1, gr.GR_MSB_FIRST)
		self.poesweather_metop_cadu_deframer_0 = poesweather.metop_cadu_deframer(True, 1024, deframer_insync_frames, deframer_outsync_frames)
		self.root_raised_cosine_filter_0 = gr.fir_filter_ccf(1, firdes.root_raised_cosine(
			1, samp_rate, symb_rate, 0.25, int(11*samp_rate/symb_rate)))
		self.usrp_simple_source = grc_usrp.simple_source_c(which=0, side=side, rx_ant="RXA")
		self.usrp_simple_source.set_decim_rate(decim_tb)
		self.usrp_simple_source.set_frequency(freq_tb, verbose=True)
		self.usrp_simple_source.set_gain(gain_tb)
		self.wxgui_fftsink1 = fftsink2.fft_sink_c(
			self.rx_ntb.GetPage(0).GetWin(),
			baseband_freq=freq,
			y_per_div=2,
			y_divs=10,
			ref_level=12,
			ref_scale=2.0,
			sample_rate=samp_rate,
			fft_size=1024,
			fft_rate=30,
			average=True,
			avg_alpha=0.1,
			title="Not filtered spectrum",
			peak_hold=False,
		)
		self.rx_ntb.GetPage(0).Add(self.wxgui_fftsink1.win)
		self.wxgui_fftsink2 = fftsink2.fft_sink_c(
			self.rx_ntb.GetPage(0).GetWin(),
			baseband_freq=0,
			y_per_div=2,
			y_divs=10,
			ref_level=12,
			ref_scale=2.0,
			sample_rate=samp_rate,
			fft_size=1024,
			fft_rate=30,
			average=True,
			avg_alpha=0.1,
			title="RRC filtered spectrum",
			peak_hold=False,
		)
		self.rx_ntb.GetPage(0).Add(self.wxgui_fftsink2.win)
		self.wxgui_scopesink2_1 = scopesink2.scope_sink_c(
			self.rx_ntb.GetPage(1).GetWin(),
			title="BPSK constellation diagram",
			sample_rate=symb_rate,
			v_scale=0.4,
			v_offset=0,
			t_scale=1/samp_rate,
			ac_couple=False,
			xy_mode=True,
			num_inputs=1,
		)
		self.rx_ntb.GetPage(1).Add(self.wxgui_scopesink2_1.win)

		##################################################
		# Connections
		##################################################
		self.connect((self.usrp_simple_source, 0), (self.gr_agc_xx_0, 0))
		self.connect((self.gr_agc_xx_0, 0), (self.root_raised_cosine_filter_0, 0))
		self.connect((self.gr_multiply_const_vxx_0, 0), (self.gr_complex_to_real_0, 0))
		self.connect((self.fec_decode_viterbi_bpsk_fb_0, 0), (self.gr_packed_to_unpacked_xx_0, 0))
		self.connect((self.gr_packed_to_unpacked_xx_0, 0), (self.poesweather_metop_cadu_deframer_0, 0))
		self.connect((self.gr_complex_to_real_0, 0), (self.fec_decode_viterbi_bpsk_fb_0, 0))
		self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.gr_multiply_const_vxx_0, 0))
		self.connect((self.gr_costas_loop_cc_0, 0), (self.gr_clock_recovery_mm_xx_0, 0))
		self.connect((self.root_raised_cosine_filter_0, 0), (self.gr_costas_loop_cc_0, 0))
		self.connect((self.gr_multiply_const_vxx_0, 0), (self.wxgui_scopesink2_1, 0))
		self.connect((self.root_raised_cosine_filter_0, 0), (self.wxgui_fftsink2, 0))
		self.connect((self.gr_agc_xx_0, 0), (self.wxgui_fftsink1, 0))
		self.connect((self.poesweather_metop_cadu_deframer_0, 0), (self.gr_null_sink_0, 0))
Exemple #2
0
    def __init__(self,
                 deframer_insync_frames=2,
                 viterbi_insync_frames=5,
                 deframer_outsync_frames=5,
                 viterbi_outsync_frames=20,
                 viterbi_sync_check=True,
                 viterbi_sync_threshold=0.1,
                 deframer_sync_check=True,
                 clock_alpha=0.005,
                 symb_rate=293883,
                 pll_alpha=0.005,
                 satellite='GOES-LRIT',
                 freq=1691.02e6,
                 gain=23,
                 decim=108,
                 side="A",
                 frames_file=os.environ['HOME'] +
                 '/GOES-LRIT_cadu_frames.cadu',
                 baseband_file=os.environ['HOME'] + '/GOES-LRIT_baseband.dat'):
        grc_wxgui.top_block_gui.__init__(
            self, title="LRIT Receiver from baseband file")

        ##################################################
        # Parameters
        ##################################################
        self.deframer_insync_frames = deframer_insync_frames
        self.viterbi_insync_frames = viterbi_insync_frames
        self.deframer_outsync_frames = deframer_outsync_frames
        self.viterbi_outsync_frames = viterbi_outsync_frames
        self.viterbi_sync_check = viterbi_sync_check
        self.viterbi_sync_threshold = viterbi_sync_threshold
        self.deframer_sync_check = deframer_sync_check
        self.clock_alpha = clock_alpha
        self.symb_rate = symb_rate
        self.pll_alpha = pll_alpha
        self.satellite = satellite
        self.freq = freq
        self.gain = gain
        self.decim = decim
        self.side = side
        self.frames_file = frames_file
        self.baseband_file = baseband_file

        ##################################################
        # Variables
        ##################################################
        self.decim_tb = decim_tb = decim
        self.symb_rate_tb = symb_rate_tb = symb_rate
        self.samp_rate = samp_rate = 64e6 / decim_tb
        self.viterbi_sync_threshold_text = viterbi_sync_threshold_text = viterbi_sync_threshold
        self.viterbi_sync_after_text = viterbi_sync_after_text = viterbi_insync_frames
        self.viterbi_outofsync_after_text = viterbi_outofsync_after_text = viterbi_outsync_frames
        self.viterbi_node_sync_text = viterbi_node_sync_text = viterbi_sync_check
        self.sps = sps = samp_rate / symb_rate_tb
        self.satellite_text = satellite_text = satellite
        self.samp_rate_st = samp_rate_st = samp_rate
        self.pll_alpha_sl = pll_alpha_sl = pll_alpha
        self.gain_tb = gain_tb = gain
        self.freq_tb = freq_tb = freq
        self.frames_file_text_inf = frames_file_text_inf = frames_file
        self.deframer_sync_after_text = deframer_sync_after_text = deframer_insync_frames
        self.deframer_nosync_after_text = deframer_nosync_after_text = deframer_outsync_frames
        self.deframer_check_sync_text = deframer_check_sync_text = deframer_sync_check
        self.datetime_text = datetime_text = strftime("%A, %B %d %Y %H:%M:%S",
                                                      localtime())
        self.clock_alpha_sl = clock_alpha_sl = clock_alpha
        self.baseband_file_text_inf = baseband_file_text_inf = 'no output file'

        ##################################################
        # Notebooks
        ##################################################
        self.rx_ntb = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
        self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "USRP Receiver")
        self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb),
                            "PLL demodulator and Clock sync")
        self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Viterbi decoder")
        self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Deframer")
        self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Output")
        self.Add(self.rx_ntb)

        ##################################################
        # Controls
        ##################################################
        self._decim_tb_text_box = forms.text_box(
            parent=self.rx_ntb.GetPage(0).GetWin(),
            value=self.decim_tb,
            callback=self.set_decim_tb,
            label="Decimation",
            converter=forms.int_converter(),
        )
        self.rx_ntb.GetPage(0).GridAdd(self._decim_tb_text_box, 1, 3, 1, 1)
        self._symb_rate_tb_text_box = forms.text_box(
            parent=self.rx_ntb.GetPage(1).GetWin(),
            value=self.symb_rate_tb,
            callback=self.set_symb_rate_tb,
            label="Symbol rate",
            converter=forms.int_converter(),
        )
        self.rx_ntb.GetPage(1).GridAdd(self._symb_rate_tb_text_box, 2, 1, 1, 1)
        self._viterbi_sync_threshold_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(2).GetWin(),
            value=self.viterbi_sync_threshold_text,
            callback=self.set_viterbi_sync_threshold_text,
            label="Viterbi node sync threshold [BER]",
            converter=forms.float_converter(),
        )
        self.rx_ntb.GetPage(2).GridAdd(
            self._viterbi_sync_threshold_text_static_text, 3, 0, 1, 1)
        self._viterbi_sync_after_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(2).GetWin(),
            value=self.viterbi_sync_after_text,
            callback=self.set_viterbi_sync_after_text,
            label="Valid frames for Viterbi decoder sync",
            converter=forms.float_converter(),
        )
        self.rx_ntb.GetPage(2).GridAdd(
            self._viterbi_sync_after_text_static_text, 4, 0, 1, 1)
        self._viterbi_outofsync_after_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(2).GetWin(),
            value=self.viterbi_outofsync_after_text,
            callback=self.set_viterbi_outofsync_after_text,
            label="Invalid frames for Viterbi decoder out of sync",
            converter=forms.float_converter(),
        )
        self.rx_ntb.GetPage(2).GridAdd(
            self._viterbi_outofsync_after_text_static_text, 5, 0, 1, 1)
        self._viterbi_node_sync_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(2).GetWin(),
            value=self.viterbi_node_sync_text,
            callback=self.set_viterbi_node_sync_text,
            label="Viterbi node sync enable",
            converter=forms.str_converter(),
        )
        self.rx_ntb.GetPage(2).GridAdd(
            self._viterbi_node_sync_text_static_text, 2, 0, 1, 1)
        self._satellite_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(0).GetWin(),
            value=self.satellite_text,
            callback=self.set_satellite_text,
            label="Sat ",
            converter=forms.str_converter(),
        )
        self.rx_ntb.GetPage(0).GridAdd(self._satellite_text_static_text, 1, 0,
                                       1, 1)
        self._samp_rate_st_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(0).GetWin(),
            value=self.samp_rate_st,
            callback=self.set_samp_rate_st,
            label="Sample rate",
            converter=forms.float_converter(),
        )
        self.rx_ntb.GetPage(0).GridAdd(self._samp_rate_st_static_text, 1, 4, 1,
                                       1)
        _pll_alpha_sl_sizer = wx.BoxSizer(wx.VERTICAL)
        self._pll_alpha_sl_text_box = forms.text_box(
            parent=self.rx_ntb.GetPage(1).GetWin(),
            sizer=_pll_alpha_sl_sizer,
            value=self.pll_alpha_sl,
            callback=self.set_pll_alpha_sl,
            label="PLL Alpha",
            converter=forms.float_converter(),
            proportion=0,
        )
        self._pll_alpha_sl_slider = forms.slider(
            parent=self.rx_ntb.GetPage(1).GetWin(),
            sizer=_pll_alpha_sl_sizer,
            value=self.pll_alpha_sl,
            callback=self.set_pll_alpha_sl,
            minimum=0.001,
            maximum=0.1,
            num_steps=100,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.rx_ntb.GetPage(1).GridAdd(_pll_alpha_sl_sizer, 1, 0, 1, 1)
        self._gain_tb_text_box = forms.text_box(
            parent=self.rx_ntb.GetPage(0).GetWin(),
            value=self.gain_tb,
            callback=self.set_gain_tb,
            label="RX gain [dB]",
            converter=forms.int_converter(),
        )
        self.rx_ntb.GetPage(0).GridAdd(self._gain_tb_text_box, 1, 2, 1, 1)
        self._freq_tb_text_box = forms.text_box(
            parent=self.rx_ntb.GetPage(0).GetWin(),
            value=self.freq_tb,
            callback=self.set_freq_tb,
            label="Frequency",
            converter=forms.float_converter(),
        )
        self.rx_ntb.GetPage(0).GridAdd(self._freq_tb_text_box, 1, 1, 1, 1)
        self._frames_file_text_inf_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(4).GetWin(),
            value=self.frames_file_text_inf,
            callback=self.set_frames_file_text_inf,
            label="Frames filename",
            converter=forms.str_converter(),
        )
        self.rx_ntb.GetPage(4).GridAdd(self._frames_file_text_inf_static_text,
                                       3, 0, 1, 1)
        self._deframer_sync_after_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(3).GetWin(),
            value=self.deframer_sync_after_text,
            callback=self.set_deframer_sync_after_text,
            label="Deframe sync after",
            converter=forms.float_converter(),
        )
        self.rx_ntb.GetPage(3).GridAdd(
            self._deframer_sync_after_text_static_text, 3, 0, 1, 1)
        self._deframer_nosync_after_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(3).GetWin(),
            value=self.deframer_nosync_after_text,
            callback=self.set_deframer_nosync_after_text,
            label="Deframer out of sync after",
            converter=forms.float_converter(),
        )
        self.rx_ntb.GetPage(3).GridAdd(
            self._deframer_nosync_after_text_static_text, 4, 0, 1, 1)
        self._deframer_check_sync_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(3).GetWin(),
            value=self.deframer_check_sync_text,
            callback=self.set_deframer_check_sync_text,
            label="Deframer check sync enable",
            converter=forms.str_converter(),
        )
        self.rx_ntb.GetPage(3).GridAdd(
            self._deframer_check_sync_text_static_text, 2, 0, 1, 1)
        self._datetime_text_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(4).GetWin(),
            value=self.datetime_text,
            callback=self.set_datetime_text,
            label="Local time of aquisition start",
            converter=forms.str_converter(),
        )
        self.rx_ntb.GetPage(4).GridAdd(self._datetime_text_static_text, 1, 0,
                                       1, 1)
        _clock_alpha_sl_sizer = wx.BoxSizer(wx.VERTICAL)
        self._clock_alpha_sl_text_box = forms.text_box(
            parent=self.rx_ntb.GetPage(1).GetWin(),
            sizer=_clock_alpha_sl_sizer,
            value=self.clock_alpha_sl,
            callback=self.set_clock_alpha_sl,
            label="Clock alpha",
            converter=forms.float_converter(),
            proportion=0,
        )
        self._clock_alpha_sl_slider = forms.slider(
            parent=self.rx_ntb.GetPage(1).GetWin(),
            sizer=_clock_alpha_sl_sizer,
            value=self.clock_alpha_sl,
            callback=self.set_clock_alpha_sl,
            minimum=0.001,
            maximum=0.1,
            num_steps=100,
            style=wx.SL_HORIZONTAL,
            cast=float,
            proportion=1,
        )
        self.rx_ntb.GetPage(1).GridAdd(_clock_alpha_sl_sizer, 1, 1, 1, 1)
        self._baseband_file_text_inf_static_text = forms.static_text(
            parent=self.rx_ntb.GetPage(4).GetWin(),
            value=self.baseband_file_text_inf,
            callback=self.set_baseband_file_text_inf,
            label="Baseband filename",
            converter=forms.str_converter(),
        )
        self.rx_ntb.GetPage(4).GridAdd(
            self._baseband_file_text_inf_static_text, 4, 0, 1, 1)

        ##################################################
        # Blocks
        ##################################################
        self.fec_decode_viterbi_bpsk_fb_0 = fec.decode_viterbi_bpsk_fb(
            viterbi_sync_check, viterbi_sync_threshold, viterbi_insync_frames,
            viterbi_outsync_frames, viterbi_outsync_frames * 3)
        self.gr_agc_xx_0 = gr.agc_cc(10e-6, 1, 1.0 / 32767.0, 1.0)
        self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_cc(
            sps, clock_alpha_sl * clock_alpha_sl / 4.0, 0.5, clock_alpha_sl,
            0.05)
        self.gr_complex_to_real_0 = gr.complex_to_real(1)
        self.gr_costas_loop_cc_0 = gr.costas_loop_cc(
            pll_alpha_sl, pll_alpha_sl * pll_alpha_sl / 4.0, 0.07, -0.07, 2)
        self.gr_file_source_0 = gr.file_source(
            gr.sizeof_gr_complex * 1,
            "/home/martin/GNURadioData/lrit/goes_lrit_D108AD64MHz.sam", True)
        self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((1, ))
        self.gr_null_sink_0 = gr.null_sink(gr.sizeof_char * 1)
        self.gr_packed_to_unpacked_xx_0 = gr.packed_to_unpacked_bb(
            1, gr.GR_MSB_FIRST)
        self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex * 1, samp_rate)
        self.poesweather_metop_cadu_deframer_0 = poesweather.metop_cadu_deframer(
            True, 1024, deframer_insync_frames, deframer_outsync_frames)
        self.root_raised_cosine_filter_0 = gr.fir_filter_ccf(
            1,
            firdes.root_raised_cosine(1, samp_rate, symb_rate, 0.25,
                                      int(11 * samp_rate / symb_rate)))
        self.wxgui_fftsink1 = fftsink2.fft_sink_c(
            self.rx_ntb.GetPage(0).GetWin(),
            baseband_freq=freq,
            y_per_div=2,
            y_divs=10,
            ref_level=12,
            ref_scale=2.0,
            sample_rate=samp_rate,
            fft_size=1024,
            fft_rate=30,
            average=True,
            avg_alpha=0.1,
            title="Not filtered spectrum",
            peak_hold=False,
        )
        self.rx_ntb.GetPage(0).Add(self.wxgui_fftsink1.win)
        self.wxgui_fftsink2 = fftsink2.fft_sink_c(
            self.rx_ntb.GetPage(0).GetWin(),
            baseband_freq=0,
            y_per_div=2,
            y_divs=10,
            ref_level=12,
            ref_scale=2.0,
            sample_rate=samp_rate,
            fft_size=1024,
            fft_rate=30,
            average=True,
            avg_alpha=0.1,
            title="RRC filtered spectrum",
            peak_hold=False,
        )
        self.rx_ntb.GetPage(0).Add(self.wxgui_fftsink2.win)
        self.wxgui_scopesink2_1 = scopesink2.scope_sink_c(
            self.rx_ntb.GetPage(1).GetWin(),
            title="BPSK constellation diagram",
            sample_rate=symb_rate,
            v_scale=0.4,
            v_offset=0,
            t_scale=1 / samp_rate,
            ac_couple=False,
            xy_mode=True,
            num_inputs=1,
        )
        self.rx_ntb.GetPage(1).Add(self.wxgui_scopesink2_1.win)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.gr_agc_xx_0, 0),
                     (self.root_raised_cosine_filter_0, 0))
        self.connect((self.gr_multiply_const_vxx_0, 0),
                     (self.gr_complex_to_real_0, 0))
        self.connect((self.fec_decode_viterbi_bpsk_fb_0, 0),
                     (self.gr_packed_to_unpacked_xx_0, 0))
        self.connect((self.gr_packed_to_unpacked_xx_0, 0),
                     (self.poesweather_metop_cadu_deframer_0, 0))
        self.connect((self.gr_complex_to_real_0, 0),
                     (self.fec_decode_viterbi_bpsk_fb_0, 0))
        self.connect((self.gr_clock_recovery_mm_xx_0, 0),
                     (self.gr_multiply_const_vxx_0, 0))
        self.connect((self.gr_costas_loop_cc_0, 0),
                     (self.gr_clock_recovery_mm_xx_0, 0))
        self.connect((self.root_raised_cosine_filter_0, 0),
                     (self.gr_costas_loop_cc_0, 0))
        self.connect((self.gr_multiply_const_vxx_0, 0),
                     (self.wxgui_scopesink2_1, 0))
        self.connect((self.root_raised_cosine_filter_0, 0),
                     (self.wxgui_fftsink2, 0))
        self.connect((self.gr_agc_xx_0, 0), (self.wxgui_fftsink1, 0))
        self.connect((self.poesweather_metop_cadu_deframer_0, 0),
                     (self.gr_null_sink_0, 0))
        self.connect((self.gr_throttle_0, 0), (self.gr_agc_xx_0, 0))
        self.connect((self.gr_file_source_0, 0), (self.gr_throttle_0, 0))
Exemple #3
0
	def __init__(self, deframer_insync_frames=2, deframer_outsync_frames=5, deframer_sync_check=True, pll_alpha=0.005, baseband_file='/home/martin/GNURadioData/USRPSamples/AHRPT_MetOp-A_20100306_0758UTC_U2_d25.sam', satellite='MetOp', viterbi_sync_threshold=0.1, viterbi_outsync_frames=20, viterbi_insync_frames=5, frames_file=os.environ['HOME'] + '/MetOp-cadu_frames.cadu', clock_alpha=0.05, symb_rate=(3500e3/3+3500e3)/2, symb_rate_0=3*3500/4, viterbi_sync_check=True, decim=24):
		grc_wxgui.top_block_gui.__init__(self, title="MetOp AHRPT Receiver from baseband file")
		_icon_path = "/home/martin/.local/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
		self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

		##################################################
		# Parameters
		##################################################
		self.deframer_insync_frames = deframer_insync_frames
		self.deframer_outsync_frames = deframer_outsync_frames
		self.deframer_sync_check = deframer_sync_check
		self.pll_alpha = pll_alpha
		self.baseband_file = baseband_file
		self.satellite = satellite
		self.viterbi_sync_threshold = viterbi_sync_threshold
		self.viterbi_outsync_frames = viterbi_outsync_frames
		self.viterbi_insync_frames = viterbi_insync_frames
		self.frames_file = frames_file
		self.clock_alpha = clock_alpha
		self.symb_rate = symb_rate
		self.symb_rate_0 = symb_rate_0
		self.viterbi_sync_check = viterbi_sync_check
		self.decim = decim

		##################################################
		# Variables
		##################################################
		self.decim_tb = decim_tb = decim
		self.symb_rate_tb = symb_rate_tb = symb_rate
		self.samp_rate = samp_rate = 100e6/decim_tb
		self.viterbi_sync_threshold_text = viterbi_sync_threshold_text = viterbi_sync_threshold
		self.viterbi_sync_after_text = viterbi_sync_after_text = viterbi_insync_frames
		self.viterbi_outofsync_after_text = viterbi_outofsync_after_text = viterbi_outsync_frames
		self.viterbi_node_sync_text = viterbi_node_sync_text = viterbi_sync_check
		self.sps = sps = samp_rate/symb_rate_tb
		self.satellite_text = satellite_text = satellite
		self.samp_rate_st = samp_rate_st = samp_rate
		self.pll_alpha_sl = pll_alpha_sl = pll_alpha
		self.frames_file_text_inf = frames_file_text_inf = frames_file
		self.deframer_sync_after_text = deframer_sync_after_text = deframer_insync_frames
		self.deframer_nosync_after_text = deframer_nosync_after_text = deframer_outsync_frames
		self.deframer_check_sync_text = deframer_check_sync_text = deframer_sync_check
		self.datetime_text = datetime_text = strftime("%A, %B %d %Y %H:%M:%S", localtime())
		self.clock_alpha_sl = clock_alpha_sl = clock_alpha
		self.baseband_file_text_inf = baseband_file_text_inf = baseband_file

		##################################################
		# Blocks
		##################################################
		self.rx_ntb = self.rx_ntb = wx.Notebook(self.GetWin(), style=wx.NB_TOP)
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Input")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "PLL demodulator and Clock sync")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Viterbi decoder")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Deframer")
		self.rx_ntb.AddPage(grc_wxgui.Panel(self.rx_ntb), "Output")
		self.Add(self.rx_ntb)
		_pll_alpha_sl_sizer = wx.BoxSizer(wx.VERTICAL)
		self._pll_alpha_sl_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_pll_alpha_sl_sizer,
			value=self.pll_alpha_sl,
			callback=self.set_pll_alpha_sl,
			label="PLL Alpha",
			converter=forms.float_converter(),
			proportion=0,
		)
		self._pll_alpha_sl_slider = forms.slider(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_pll_alpha_sl_sizer,
			value=self.pll_alpha_sl,
			callback=self.set_pll_alpha_sl,
			minimum=0.001,
			maximum=0.1,
			num_steps=100,
			style=wx.SL_HORIZONTAL,
			cast=float,
			proportion=1,
		)
		self.rx_ntb.GetPage(1).GridAdd(_pll_alpha_sl_sizer, 1, 0, 1, 1)
		_clock_alpha_sl_sizer = wx.BoxSizer(wx.VERTICAL)
		self._clock_alpha_sl_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_clock_alpha_sl_sizer,
			value=self.clock_alpha_sl,
			callback=self.set_clock_alpha_sl,
			label="Clock alpha",
			converter=forms.float_converter(),
			proportion=0,
		)
		self._clock_alpha_sl_slider = forms.slider(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			sizer=_clock_alpha_sl_sizer,
			value=self.clock_alpha_sl,
			callback=self.set_clock_alpha_sl,
			minimum=0.001,
			maximum=0.1,
			num_steps=100,
			style=wx.SL_HORIZONTAL,
			cast=float,
			proportion=1,
		)
		self.rx_ntb.GetPage(1).GridAdd(_clock_alpha_sl_sizer, 1, 1, 1, 1)
		self.wxgui_scopesink2_1 = scopesink2.scope_sink_c(
			self.rx_ntb.GetPage(0).GetWin(),
			title="QPSK constellation diagram",
			sample_rate=symb_rate,
			v_scale=0.4,
			v_offset=0,
			t_scale=1/samp_rate,
			ac_couple=False,
			xy_mode=True,
			num_inputs=1,
			trig_mode=gr.gr_TRIG_MODE_AUTO,
			y_axis_label="Counts",
		)
		self.rx_ntb.GetPage(0).Add(self.wxgui_scopesink2_1.win)
		self.wxgui_fftsink1 = fftsink2.fft_sink_c(
			self.rx_ntb.GetPage(0).GetWin(),
			baseband_freq=0,
			y_per_div=5,
			y_divs=10,
			ref_level=-15,
			ref_scale=2.0,
			sample_rate=samp_rate,
			fft_size=1024,
			fft_rate=30,
			average=True,
			avg_alpha=0.1,
			title="Not filtered spectrum",
			peak_hold=False,
		)
		self.rx_ntb.GetPage(0).Add(self.wxgui_fftsink1.win)
		self._viterbi_sync_threshold_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_sync_threshold_text,
			callback=self.set_viterbi_sync_threshold_text,
			label="Viterbi node sync threshold [BER]",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_sync_threshold_text_static_text, 3, 0, 1, 1)
		self._viterbi_sync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_sync_after_text,
			callback=self.set_viterbi_sync_after_text,
			label="Valid frames for Viterbi decoder sync",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_sync_after_text_static_text, 4, 0, 1, 1)
		self._viterbi_outofsync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_outofsync_after_text,
			callback=self.set_viterbi_outofsync_after_text,
			label="Invalid frames for Viterbi decoder out of sync",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_outofsync_after_text_static_text, 5, 0, 1, 1)
		self._viterbi_node_sync_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(2).GetWin(),
			value=self.viterbi_node_sync_text,
			callback=self.set_viterbi_node_sync_text,
			label="Viterbi node sync enable",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(2).GridAdd(self._viterbi_node_sync_text_static_text, 2, 0, 1, 1)
		self._symb_rate_tb_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(1).GetWin(),
			value=self.symb_rate_tb,
			callback=self.set_symb_rate_tb,
			label="Symbol rate",
			converter=forms.int_converter(),
		)
		self.rx_ntb.GetPage(1).GridAdd(self._symb_rate_tb_text_box, 2, 1, 1, 1)
		self._satellite_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.satellite_text,
			callback=self.set_satellite_text,
			label="Sat ",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._satellite_text_static_text, 1, 0, 1, 1)
		self._samp_rate_st_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.samp_rate_st,
			callback=self.set_samp_rate_st,
			label="Sample rate",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._samp_rate_st_static_text, 1, 4, 1, 1)
		self.poesweather_metop_cadu_deframer_0 = poesweather.metop_cadu_deframer(False, 1024, 5, 25)
		self.gr_throttle_0 = gr.throttle(gr.sizeof_short*1, samp_rate*10)
		self.gr_packed_to_unpacked_xx_0 = gr.packed_to_unpacked_bb(1, gr.GR_MSB_FIRST)
		self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((0.6, ))
		self.gr_file_source_0_0_0_0 = gr.file_source(gr.sizeof_short*1, "/home/martin/hrpt/baseband/METOP-A/2011/07/24/METOP-A_2011-07-24_122614-U2d24.sam", False)
		self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char*1, "/home/martin/MetOp-cadu_frames.cadu")
		self.gr_file_sink_0.set_unbuffered(False)
		self.gr_costas_loop_cc_0 = gr.costas_loop_cc(pll_alpha_sl, pll_alpha_sl*pll_alpha_sl/4.0, 0.07, -0.07, 4)
		self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_cc(sps, clock_alpha_sl*clock_alpha_sl/4.0, 0.5, clock_alpha_sl, 0.05)
		self.gr_agc_xx_0 = gr.agc_cc(10e-6, 1, 1.0/32767.0, 1.0)
		self._frames_file_text_inf_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(4).GetWin(),
			value=self.frames_file_text_inf,
			callback=self.set_frames_file_text_inf,
			label="Frames filename",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(4).GridAdd(self._frames_file_text_inf_static_text, 3, 0, 1, 1)
		self.fec_decode_viterbi_ahrpt_metop_cb_0 = fec.decode_viterbi_ahrpt_metop_cb(True, 0.2, 5, 50, 50)
		self._deframer_sync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(3).GetWin(),
			value=self.deframer_sync_after_text,
			callback=self.set_deframer_sync_after_text,
			label="Deframe sync after",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(3).GridAdd(self._deframer_sync_after_text_static_text, 3, 0, 1, 1)
		self._deframer_nosync_after_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(3).GetWin(),
			value=self.deframer_nosync_after_text,
			callback=self.set_deframer_nosync_after_text,
			label="Deframer out of sync after",
			converter=forms.float_converter(),
		)
		self.rx_ntb.GetPage(3).GridAdd(self._deframer_nosync_after_text_static_text, 4, 0, 1, 1)
		self._deframer_check_sync_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(3).GetWin(),
			value=self.deframer_check_sync_text,
			callback=self.set_deframer_check_sync_text,
			label="Deframer check sync enable",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(3).GridAdd(self._deframer_check_sync_text_static_text, 2, 0, 1, 1)
		self._decim_tb_text_box = forms.text_box(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.decim_tb,
			callback=self.set_decim_tb,
			label="Decimation",
			converter=forms.int_converter(),
		)
		self.rx_ntb.GetPage(0).GridAdd(self._decim_tb_text_box, 1, 3, 1, 1)
		self._datetime_text_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(4).GetWin(),
			value=self.datetime_text,
			callback=self.set_datetime_text,
			label="Local time of aquisition start",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(4).GridAdd(self._datetime_text_static_text, 1, 0, 1, 1)
		self.cs2cf = gr.interleaved_short_to_complex()
		self._baseband_file_text_inf_static_text = forms.static_text(
			parent=self.rx_ntb.GetPage(0).GetWin(),
			value=self.baseband_file_text_inf,
			callback=self.set_baseband_file_text_inf,
			label="Baseband filename",
			converter=forms.str_converter(),
		)
		self.rx_ntb.GetPage(0).Add(self._baseband_file_text_inf_static_text)

		##################################################
		# Connections
		##################################################
		self.connect((self.gr_throttle_0, 0), (self.cs2cf, 0))
		self.connect((self.gr_agc_xx_0, 0), (self.wxgui_fftsink1, 0))
		self.connect((self.gr_multiply_const_vxx_0, 0), (self.wxgui_scopesink2_1, 0))
		self.connect((self.gr_agc_xx_0, 0), (self.gr_costas_loop_cc_0, 0))
		self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.gr_multiply_const_vxx_0, 0))
		self.connect((self.gr_costas_loop_cc_0, 0), (self.gr_clock_recovery_mm_xx_0, 0))
		self.connect((self.cs2cf, 0), (self.gr_agc_xx_0, 0))
		self.connect((self.gr_file_source_0_0_0_0, 0), (self.gr_throttle_0, 0))
		self.connect((self.gr_multiply_const_vxx_0, 0), (self.fec_decode_viterbi_ahrpt_metop_cb_0, 0))
		self.connect((self.fec_decode_viterbi_ahrpt_metop_cb_0, 0), (self.gr_packed_to_unpacked_xx_0, 0))
		self.connect((self.poesweather_metop_cadu_deframer_0, 0), (self.gr_file_sink_0, 0))
		self.connect((self.gr_packed_to_unpacked_xx_0, 0), (self.poesweather_metop_cadu_deframer_0, 0))