async def streaming():
size = 256
x_vec = np.linspace(0, 5, size + 1)[0:-1]
y_vec = np.random.randn(len(x_vec))
line1 = []
sdr = RtlSdr()
sdr.sample_rate = 2.048e6 # Hz
sdr.center_freq = 101e6 # Hz
sdr.freq_correction = 60 # PPM
sdr.gain = 4
i = 0
async for samples in sdr.stream(256):
i = i + 1
print("{i} sample")
print(samples)
for sample in samples:
rand_val = sample * 10000
y_vec[-1] = rand_val
line1 = live_plotter(x_vec, y_vec, line1)
y_vec = np.append(y_vec[1:], 0.0)
print(rand_val)
# to stop streaming:
await sdr.stop()
# done
sdr.close()
def main():
### setting up sdr streaming
srate = 2400000 #sampling rate
samplesperbit = 1000000 / 38400 / (1000000 / srate)
sdr = RtlSdr()
# Just like in URH
sdr.freq_correction = 1
sdr.sample_rate = srate
sdr.center_freq = 100.000e6
sdr.gain = 'auto'
# Run check_samples in another thread to make sure we don't miss any samples
### setting up TCP server
# Create a TCP/IP socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# Bind the socket to the port
server_address = (ipAddress, portNum)
print('starting up on {} port {}'.format(*server_address))
sock.bind(server_address)
# Listen for incoming connections
sock.listen(1)
t1 = threading.Thread(target=server_run, args=(sock,q2))
t1.start()
# This is the main loop
loop = asyncio.get_event_loop()
loop.run_until_complete(get_samples(sdr, q1, q2))
async def streaming():
sdr = RtlSdr()
# configure device
Fs = 2.4e6 # Hz
sdr.sample_rate = Fs # Hz
sdr.center_freq = 98e6 # Hz
sdr.freq_correction = 60 # PPM
sdr.gain = 'auto'
# Sampling for 1 sec
t_sampling = 1
N_samples = round(Fs * t_sampling)
samples = sdr.read_samples(N_samples)
fig = plt.figure(1)
plt.xlabel('Frequency (MHz)')
plt.ylabel('Relative power (dB)')
fig.show()
async for samples in sdr.stream():
plt.psd(samples,
NFFT=1024,
Fs=sdr.sample_rate / 1e6,
Fc=sdr.center_freq / 1e6)
plt.title("Dynamic Plot")
plt.draw()
plt.pause(0.1)
fig.clear()
# to stop streaming:
await sdr.stop()
# done
sdr.close()
def get_muestras(n_samples): sdr = RtlSdr() sdr.sample_rate = Fs sdr.center_freq = Fo sdr.freq_correction = 60 sdr.gain = 'auto' return sdr.read_samples(n_samples)
def get_muestras(n_samples, sample_rate, center_freq):
sdr = RtlSdr()
sdr.sample_rate = sample_rate
sdr.center_freq = center_freq
sdr.freq_correction = 60
sdr.gain = 20
return sdr.read_samples(n_samples)
def __main__(sdr=None, read_event=None, collect_event=None):
global Radio_Data
# Initialize SDR Component
if sdr == None:
sdr = RtlSdr()
sdr.set_bandwidth(.2e6) # Hz
sdr.sample_rate = 2.4e6
sdr.freq_correction = 60 # PPM
sdr.gain = 0.0
# Load initial data for all stations
start = time.time()
Collect_Data(sdr, read_event)
end = time.time()
print('All stations initialized in', end - start, 'seconds')
# Eliminate Dead Stations
# TODO: Re-enable call once it actually works
# Determine_Available_Stations()
# Clear event prior to its availability
if collect_event != None:
collect_event.clear()
# Infinite Runtime Loop
while True:
# TODO: Add interface for messages (remove station from search, terminate, ect)
if collect_event != None and collect_event.is_set():
Collect_Data(sdr, read_event)
collect_event.clear()
def collectSignal(freq, freq_file_path, mag_file_path):
# Define function for writing signal data into file
def write_data(data_points, magnitudeData, frequencyData, mag_file,
freq_file):
i = 0
mag_file.write('[')
freq_file.write('[')
while i < data_points - 1:
mag_file.write("%s, " % magnitudeData[i])
freq_file.write("%s, " % frequencyData[i])
i += 1
mag_file.write('%s]\n' % magnitudeData[i])
freq_file.write('%s]\n' % frequencyData[i])
sdr = RtlSdr()
# Configure SDR
sdr.sample_rate = 2.4e6 # Hz
sdr.center_freq = freq # Hz
sdr.freq_correction = 60 # PPM
sdr.gain = 4 # 'auto'
# Initialize
data_points = 1024
samples = sdr.read_samples(256 * data_points)
mag_file_path = mag_file_path + "magdata.txt"
freq_file_path = freq_file_path + "freqdata.txt"
### *** IMPORTANT *** (for later, when optimizing)
### I'm not sure if we should leave this outside of the function
### and move it to the end of the main code, after the flight path
### ends. Idk the impact of leaving the SDR open/on for an extended
### period of time. If we move sdr.close() outside, we have to
### remember to also move the above code outside as well.
### Leaving this line within this function should be fine for now.
sdr.close()
# PSD plot data
psddata = psd(samples,
NFFT=data_points,
Fs=sdr.sample_rate / 1e6,
Fc=sdr.center_freq / 1e6)
# Extracting pertinent information from the PSD plot calculation
magnitudeData = psddata[0]
frequencyData = psddata[1]
# Check for .txt file and write data
# Magnitude has not been converted to dB yet. To convert, 10*log(magnitude). This comment is for Ron.
if Path(mag_file_path).is_file() and Path(freq_file_path).is_file():
with open(mag_file_path, 'a') as mag_file, open(freq_file_path,
'a') as freq_file:
write_data(data_points, magnitudeData, frequencyData, mag_file,
freq_file)
else:
with open(mag_file_path, 'w') as mag_file, open(freq_file_path,
'w') as freq_file:
write_data(data_points, magnitudeData, frequencyData, mag_file,
freq_file)
def get_sdr(): sdr = RtlSdr() #configure device #sdr.sample_rate = 2.048e6 #Hz #sdr.center_freq = 70e6 #Hz #sdr.freq_correction = 60 # PPM #sdr.gain = 'auto' sdr.sample_rate = 200000 sdr.center_freq = 907 * 1000 * 1000 sdr.freq_correction = 60 # PPM sdr.gain = 'auto' return sdr
def get_sdr():
sdr = RtlSdr()
#configure device
#sdr.sample_rate = 2.048e6 #Hz
#sdr.center_freq = 70e6 #Hz
#sdr.freq_correction = 60 # PPM
#sdr.gain = 'auto'
sdr.sample_rate = 200000
sdr.center_freq = 907 * 1000 * 1000
sdr.freq_correction = 60 # PPM
sdr.gain = 'auto'
return sdr
def main():
sdr = RtlSdr()
sdr.sample_rate = 2.048e6
sdr.center_freq = 103900000 #70e6
sdr.freq_correction = 60
sdr.gain = 'auto'
samples = sdr.read_samples(sdr.sample_rate * 2)
# print(samples, type(samples))
demod_list = []
for ind in range(len(samples) - 1):
demod_list.append(np.angle(np.conj(samples[ind]) * samples[ind + 1]))
# print(demod_list)
demod_list = demod_list[::4]
writer.write('sample.wav', 44100, np.array(demod_list))
def main():
sdr = RtlSdr()
# configure device
sdr.sample_rate = 1.024e6 # Hz
sdr.center_freq = 433.9e6 # Hz
sdr.freq_correction = 20 # PPM
sdr.gain = 'auto'
tones = AudioTones()
tones.init()
for i in range(0, 10):
rssi = MeasureRSSI(sdr)
# Measure minimum RSSI over a few readings, auto-adjust for dongle gain
min_rssi = 1000
avg_rssi = 0
for i in range(0, 10):
rssi = MeasureRSSI(sdr)
min_rssi = min(min_rssi, rssi)
avg_rssi += rssi
avg_rssi /= 10
ampl_offset = avg_rssi
max_rssi = MeasureRSSI(sdr) - ampl_offset
avg_rssi = max_rssi + 20
counter = 0
# redirect_stderr()
while (True):
wdt = Timer(3.0, watchdog_timeout)
wdt.start()
rssi = MeasureRSSI(sdr) - ampl_offset
wdt.cancel()
avg_rssi = ((15 * avg_rssi) + rssi) / 16
max_rssi = max(max_rssi, rssi)
counter += 1
if counter & 0x1F == 0:
tone_idx = int(max_rssi)
tone_idx = max(0, tone_idx)
tone_idx = min(45, tone_idx)
tones.play(tone_idx)
max_rssi = rssi
def get_data(freq):
sdr = RtlSdr()
sdr.sample_rate = 2.048e6
sdr.center_freq = int(decimal.Decimal(str(freq) + 'e6'))
sdr.freq_correction = 60
sdr.gain = 'auto'
data = sdr.read_samples(512)
if not data.any():
app.abort(404, 'No data!')
d = []
for item in data:
d.append(str(item))
js = json.dumps(d)
return js
def get_data(freq):
sdr = RtlSdr()
sdr.sample_rate = 2.048e6
sdr.center_freq = int(decimal.Decimal(str(freq) + 'e6'))
sdr.freq_correction = 60
sdr.gain = 'auto'
data = sdr.read_samples(512)
if not data.any():
app.abort(404, 'No data!')
d = []
for item in data:
d.append(str(item))
js = json.dumps(d)
return js
def capture(freq, label, range_freq, range_gain):
for freq_var in range_freq:
for gain_var in range_gain:
# Configure device (freq in herz, freq_correction is PPM)
sdr = RtlSdr()
sdr.sample_rate = 250000
sdr.center_freq = freq + freq_var
sdr.freq_correction = 60
sdr.gain = gain_var
# Read 10 seconds of 250k sampled data
samples = sdr.read_samples(10 * 256 * 1024)
sdr.close()
# Use matplotlib to estimate and plot the PSD
psd(samples[:65536],
NFFT=1024,
Fs=sdr.sample_rate / 1e6,
Fc=sdr.center_freq / 1e6)
#print(psd)
xlabel('Frequency (MHz)')
ylabel('Relative power (dB)')
# Show and save a pic
#show()
file_name = 'data-' + label + '-' + str(
double(freq + freq_var)) + '-g-' + str(gain_var)
print("Saving " + file_name)
savefig(file_name + '.png')
# Save samples to file
fh = open(file_name + '.iq', "wb")
x = samples
x = x[:5000000]
for sample in x:
ba = bytearray(struct.pack("f", numpy.float32(sample.real)))
for b in ba:
fh.write(bytearray([b]))
ba = bytearray(struct.pack("f", numpy.float32(sample.imag)))
for b in ba:
fh.write(bytearray([b]))
fh.close()
clf()
def find_powerfull_FM():
sdr = RtlSdr()
# configure device
Fs = 2e6 # Hz
sdr.sample_rate = Fs # Hz
sdr.freq_correction = 60 # PPM
sdr.gain = 'auto'
FM_band_min = 87.5
FM_band_max = 109
powe = np.ndarray(0)
freq = np.ndarray(0)
t_sampling = 0.1 # Sampling for 100 ms
N_samples = round(Fs * t_sampling)
for i in np.arange(FM_band_min, FM_band_max, Fs / 1e6):
sdr.center_freq = i * 1e6 # Hz
counter = 0
prev_int = 0
while 1:
counter = counter + 1
samples = sdr.read_samples(N_samples)
###################################################################################
power, psd_freq = plt.psd(samples,
NFFT=1024,
Fs=sdr.sample_rate / 1e6,
Fc=sdr.center_freq / 1e6)
#####################################################################################
ind_pow = np.argmax(power)
freq_ind = round(psd_freq[ind_pow], 1)
if freq_ind == prev_int and counter >= 3:
powe = np.append(powe, ind_pow)
freq = np.append(freq, freq_ind)
break
prev_int = freq_ind
# done
sdr.close()
max_fm_station_power = np.argmax(powe)
max_fm_station_freq = freq[max_fm_station_power]
return max_fm_station_freq
def main():
gin = sys.argv[1]
ppm = sys.argv[2]
chn = sys.argv[3]
if ppm == '0': ppm = '1'
if chn == 'a': frc = 161.975e6
if chn == 'b': frc = 162.025e6
sdr = RtlSdr()
wf = Waterfall(sdr)
# some defaults
sdr.rs = 1e6
sdr.fc = frc
sdr.gain = float(gin)
sdr.freq_correction = int(float(ppm))
wf.start()
# cleanup
sdr.close()
async def streaming(sample_processor: Callable[[SampleStream, RtlSdr], None],
center_freq=100300000,
sample_rate=2.048e6):
"""SDR streaming function
:param sample_processor: Function that is used to process the samples, must
take an array of floats as the first argument and an sdr object
(for metadata) as the second
:param sample_rate: The sample rate to obtain samples at in Hz
:param center_freq int: The center frequency for capturing in Hz
"""
sdr = RtlSdr()
sdr.sample_rate=sample_rate
sdr.center_freq = center_freq
sdr.freq_correction = 60
sdr.gain = 'auto'
async for samples in sdr.stream():
sample_processor(samples, sdr)
await sdr.stop()
sdr.close()
def main():
gin=sys.argv[1]
ppm=sys.argv[2]
chn=sys.argv[3]
if ppm=='0': ppm='1'
if chn=='a': frc=161.975e6
if chn=='b': frc=162.025e6
sdr = RtlSdr()
wf = Waterfall(sdr)
# some defaults
sdr.rs = 1e6
sdr.fc = frc
sdr.gain = float(gin)
sdr.freq_correction = int(float(ppm))
wf.start()
# cleanup
sdr.close()
def storing_stream_with_windows(l, device_number, folder, subfolders, center_frequency, samplerate, gain, nsamples, freq_correction,
user_hash):
l.acquire()
print(device_number, center_frequency, samplerate, gain, nsamples, freq_correction)
# configure device
sdr = RtlSdr(device_index=device_number)
sdr.center_freq = center_frequency
sdr.sample_rate = samplerate
if freq_correction:
sdr.freq_correction = freq_correction # PPM
sdr.gain = gain
print('hello world')
timestamp = time.mktime(time.gmtime())
samples = sdr.read_bytes(nsamples*2)
sdr.close()
l.release()
print("save")
basename = "{hash}_{freq}_{time:0.0f}".format(hash=user_hash, freq=center_frequency, time=timestamp)
filename = path.join(folder, subfolders[0], "tmp_" + basename)
# np.savez_compressed(filename, samples) # storing by numpy and copressing it
'''np.save(filename, samples)
os.rename(filename + ".npy",
path.join(folder, subfolders[0], basename + ".npy"))'''
f = open(filename, 'wb')
f.write(samples)
f.close()
os.rename(filename,
path.join(folder, subfolders[0], basename + ".dat"))
del samples
filename = path.join(folder, subfolders[1], basename + ".npy")
sdrmeta(filename, device_number, folder, subfolders, center_frequency,
samplerate, gain, nsamples, freq_correction, user_hash)
return filename
def saveSignal(freq, file_path):
# Define function for writing signal data into file
def write_data(data_points, magnitudeData, frequencyData, mag_file,
freq_file):
i = 0
mag_file.write('[')
freq_file.write('[')
while i < data_points - 1:
mag_file.write("%s, " % magnitudeData[i])
freq_file.write("%s, " % frequencyData[i])
i += 1
mag_file.write('%s]\n' % magnitudeData[i])
freq_file.write('%s]\n' % frequencyData[i])
sdr = RtlSdr()
# Configure SDR
sdr.sample_rate = 2.4e6 # Hz
sdr.center_freq = freq # Hz
sdr.freq_correction = 60 # PPM
sdr.gain = 4 # 'auto'
# Initialize
data_points = 1024
samples = sdr.read_samples(256 * data_points)
mag_file_path = file_path + "/magdata.txt"
freq_file_path = file_path + "/freqdata.txt"
### *** IMPORTANT *** (for later, when optimizing)
### I'm not sure if we should leave this outside of the function
### and move it to the end of the main code, after the flight path
### ends. Idk the impact of leaving the SDR open/on for an extended
### period of time. If we move sdr.close() outside, we have to
### remember to also move the above code outside as well.
### Leaving this line within this function should be fine for now.
sdr.close()
# PSD plot data
psddata = psd(samples,
NFFT=data_points,
Fs=sdr.sample_rate / 1e6,
Fc=sdr.center_freq / 1e6)
# Extracting pertinent information from the PSD plot calculation
magnitudeData = psddata[0]
frequencyData = psddata[1]
# Check for .txt file and write data
# For Ron: Magnitude has not been converted to dB yet. To convert, 10*log(magnitude).
if Path(mag_file_path).is_file() and Path(freq_file_path).is_file():
with open(mag_file_path, 'a') as mag_file, open(freq_file_path,
'a') as freq_file:
write_data(data_points, magnitudeData, frequencyData, mag_file,
freq_file)
else:
with open(mag_file_path, 'w') as mag_file, open(freq_file_path,
'w') as freq_file:
write_data(data_points, magnitudeData, frequencyData, mag_file,
freq_file)
print("Data saved successfully.")
# CHANGELOG
# Feb 9, 2018
# Cleared up a few comments/notes to self and cleaned up code in [measurements.py]
# Feb 10, 2018
# Verified exchangeable formatting for sdr.center_freq (95.1e6 vs 95100000 vs 95100000.0)
# Added ability to allow user to choose save location [in Flight_Control_v2.py]
# Made code more robust by preventing user from inputting invalid arugments [in Flight_Control_v2.py]
# Feb 11, 2018
# Renamed functions from collectBlah to saveBlah for clarity
# Added ability to configure center frequency of SDR
# Modified saveSignal to save data dynamically based off of user input
# Added data save confirmation for verification
# Modified saveGPS to save data dynamically based off of user input
async def streaming():
sdr = RtlSdr()
# configure device
# Fs = 2.4e6 # Hz
Fs = 1e6
sdr.sample_rate = Fs # Hz
sdr.center_freq = 95.8e6 # Hz
sdr.freq_correction = 60 # PPM
sdr.gain = 'auto'
# Sampling for 1 sec
t_sampling = 0.1
N_samples = round(Fs * t_sampling)
samples = sdr.read_samples(N_samples)
CFO_corr_en = 0
fig = plt.figure(1)
plt.xlabel('Frequency (MHz)')
plt.ylabel('Relative power (dB)')
fig.show()
LEFT = 15000
BW = 8000
F_center = LEFT + BW / 2
async for samples in sdr.stream():
# Convert samples to a numpy array
x1 = np.array(samples).astype("complex64")
if CFO_corr_en == 1:
analog_signal_packets = CFO_pilot_tone(x1, Fs)
else:
analog_signal_packets = x1
# To mix the data down, generate a digital complex exponential
# (with the same length as x1) with phase -F_offset/Fs
fc1 = np.exp(-1.0j * 2.0 * np.pi * F_center / Fs *
np.arange(len(analog_signal_packets)))
# Now, just multiply x1 and the digital complex exponential
x2 = analog_signal_packets * fc1
# channelize the signal Method 1
########################################################################
newrate = BW
samples = round(x2.size * newrate / Fs)
resampled_signal1 = sps.resample(x2, samples)
########################################################################
# channelize the signal Method 2
########################################################################
# Find a decimation rate to achieve audio sampling rate between 44-48 kHz
audio_freq = 44100.0
dec_audio = round(Fs / audio_freq)
resampled_signal2 = sps.decimate(x2, dec_audio)
Fs_audio = Fs / dec_audio
########################################################################
plt.psd(resampled_signal2,
NFFT=1024,
Fs=Fs_audio,
Fc=sdr.center_freq / 1e6)
plt.title("Dynamic Plot")
plt.draw()
plt.pause(0.1)
fig.clear()
# to stop streaming:
await sdr.stop()
# done
sdr.close()
def main(stdscr):
sdr = RtlSdr()
# configure device
sdr.sample_rate = 1.024e6 # Hz
sdr.center_freq = 433.9e6 # Hz
sdr.freq_correction = 20 # PPM
sdr.gain = 'auto'
tones = AudioTones()
tones.init()
curses.noecho()
curses.cbreak()
curses.curs_set(0)
curses.init_pair(1, curses.COLOR_GREEN, curses.COLOR_BLACK)
curses.init_pair(2, curses.COLOR_RED, curses.COLOR_BLACK)
curses.init_pair(3, curses.COLOR_YELLOW, curses.COLOR_BLACK)
curses.init_pair(4, curses.COLOR_WHITE, curses.COLOR_BLACK)
stdscr.clear() # Clear screen
bargraph_str = chr(0x2588) * 80 + ' ' * 80 # "block" character
for i in range(0, 10):
rssi = MeasureRSSI(sdr)
# Measure minimum RSSI over a few readings, auto-adjust for dongle gain
min_rssi = 1000
for i in range(0, 10):
rssi = MeasureRSSI(sdr)
min_rssi = min(min_rssi, rssi)
ampl_offset = min_rssi
max_rssi = MeasureRSSI(sdr) - ampl_offset
avg_rssi = max_rssi + 20
counter = 0
# redirect_stderr()
while (True):
rssi = MeasureRSSI(sdr) - ampl_offset
if rssi - avg_rssi > 10:
stdscr.addch(3, 3, '*')
else:
stdscr.addch(3, 3, ' ')
avg_rssi = ((15 * avg_rssi) + rssi) / 16
stdscr.addstr(0, 0, "{0:4.0f} : {1:4.0f}".format(rssi, avg_rssi))
stdscr.addstr(20, 0, "{0:4.1f}".format(rssi))
# select the bargraph's colour:
if rssi > 30:
bargraph_color = 4
elif rssi > 20:
bargraph_color = 3
elif rssi > 15:
bargraph_color = 2
else:
bargraph_color = 1
# draw the bargraph:
bargraph_idx = min(int(78 - rssi), 80)
stdscr.addstr(7, 0, bargraph_str[bargraph_idx:bargraph_idx + 80],
curses.color_pair(bargraph_color))
stdscr.addstr(8, 0, bargraph_str[bargraph_idx:bargraph_idx + 80],
curses.color_pair(bargraph_color))
stdscr.refresh()
max_rssi = max(max_rssi, rssi)
counter += 1
if counter & 0x1F == 0:
tone_idx = max_rssi
tone_idx = max(0, tone_idx)
tone_idx = min(40, tone_idx)
tones.play(tone_idx)
max_rssi = rssi
stdscr.addstr(21, 0, "{0:4.1f}".format(max_rssi))
def main():
clear = lambda: os.system('clear')
clear()
print("\nFALCON-B Tracking and Monitoring Software v0.0.2.")
print("Created by Ian Carney, Michael Krzystowczyk, William Lee, and Frank Palermo.")
print("Louisiana Tech University")
print("This program is for technical demonstration only and is not for use\nin any commercial, industrial, or operational environments.\n")
sdrgain = 5
bw = 32e3
sampRate = 1.024e6
correction = 50
#global snr1, snr2, snr3, snr4
if len(sys.argv)==2:
centerfreq = sys.argv[1]
else:
centerfreq = 462562500
#Configures SDR1
sdr1 = RtlSdr(serial_number='0000101')
sdr1.sample_rate = sampRate
sdr1.bandwidth = bw
sdr1.center_freq = centerfreq
print(sdr1.center_freq)
sdr1.gain=5
sdr1.freq_correction = correction
#Configures SDR2
sdr2 = RtlSdr(serial_number='0000102')
sdr2.sample_rate = sampRate
sdr2.bandwidth = bw
sdr2.center_freq = centerfreq
sdr2.gain=5
sdr2.freq_correction = correction
#Configures SDR3
sdr3 = RtlSdr(serial_number='0000103')
sdr3.sample_rate = sampRate
sdr3.bandwidth = bw
sdr3.center_freq = centerfreq
sdr3.gain=5
sdr3.freq_correction = correction
#Configures SDR4
sdr4 = RtlSdr(serial_number='0000104')
sdr4.sample_rate = sampRate
sdr4.bandwidth = bw
sdr4.center_freq = centerfreq
sdr4.gain=4
sdr4.freq_correction = correction
_idx = 0
while(1):
print("Collecting data...")
sdr1data = readValues(sdr1, sampRate) #Returns Power of SDR1
sleep(0.1)
sdr2data = readValues(sdr2, sampRate) #Returns Power of SDR2
sleep(0.1)
sdr3data = readValues(sdr3, sampRate) #Returns Power of SDR3
sleep(0.1)
sdr4data = readValues(sdr4, sampRate) #Returns Power of SDR4
snr1 = np.float32(getSNR(sdr1data)) #Returns SNR of SDR1
snr2 = np.float32(getSNR(sdr2data)) #Returns SNR of SDR2
snr3 = np.float32(getSNR(sdr3data)) #Returns SNR of SDR3
snr4 = np.float32(getSNR(sdr4data)) #Returns SNR of SDR4
all_snr = [snr1, snr2, snr3, snr4] #Puts all SDR Data in an array
#print("All SNR: ")
# print(all_snr)
all_snr.sort()
#print("Sorted SNR: ")
highSNR = all_snr[-1] #Gets highest SNR
secondSNR = all_snr[-2] #Gets second highest SNR
if(highSNR == snr1):
snr3 = 0
if(highSNR == snr2):
snr4 = 0
if(highSNR == snr3):
snr1 = 0
if(highSNR == snr4):
snr2 = 0
all_snr2 = [snr1, snr2, snr3, snr4]
#print(all_snr2)
all_snr2.sort()
highSNR2 = all_snr2[-1]
secondSNR2 = all_snr2[-2]
#print(all_snr2)
#print("High SNR: ", highSNR,"\n")
#print("Second SNR: ", secondSNR, "\n")
if((highSNR2 or secondSNR2) != 0 and (highSNR2 or secondSNR2) > 2):
shortDist = getDist(highSNR2) #Uses highest SNR to find distance
#longDist = getDist(secondSNR2) #Gets distance from second highest antenna SNR
# print(highSNR, secondSNR)
#print(snr1, snr2, snr3, snr4)
try:
case, ceiling = findCase(highSNR2, secondSNR2, snr1, snr2, snr3, snr4)
minDist, maxDist, colorZone = findZone(highSNR)
locationMatrix = [case, colorZone]
#print("The signal is between ", minDist, " feet away and ", maxDist, " feet away.")
if(case==0):
raise TypeError
# print("\n")
# print("Case Number: ", case)
# print("Ceiling: ", ceiling, " degrees")
#angle = dirFind(shortDist, longDist, ceiling)
print("Signal Detected!")
print "Distance: ", minDist, " to ", maxDist, " feet away."
#print "Distance Zone: ", colorZone
print "Direction Zone: ", case
print "Ceiling: ", ceiling, " degrees to ", ceiling-45, " degrees"
data_log = open("./webserver/data_log.txt","a+",0)
data_log.write("Dist: {},Brng: {},Zone: {}.{},Idx: {},\n".format((minDist+maxDist)//2, ceiling, case, colorZone,_idx))
data_log.close()
_idx += 1
#print("Signal Detected! There is a signal that is ", shortDist, " away at an angle of ", angle, " degrees.")
for _ in range(2):
print('\n')
except:
Fo = 101.723e6
if len(sys.argv)>1:
print(sys.argv[1])
Fo = float(sys.argv[1]+'e6')
fm = Demodulador(Fs,Fo)
output_Fs = fm.outputFs()
p = pyaudio.PyAudio()
stream = p.open(format=pyaudio.paInt16,channels=1,rate=output_Fs,output=True)
sdr = RtlSdr()
sdr.sample_rate = Fs # Hz
sdr.center_freq = Fo # Hz
sdr.freq_correction = 60 # PPM
sdr.gain = 'auto'
loop = asyncio.get_event_loop()
async def streaming(queue):
elapsed_time = time.time()
async for samples in sdr.stream(num_samples_or_bytes=10240000):
queue.put(samples)
print("Samples: {0}".format(time.time() - elapsed_time))
# to stop streaming:
# await sdr.stop()
# done
sdr.close()
if sirka_volba is 'b':
pocet_vzorku = 32 * 512
if sirka_volba == 'c':
pocet_vzorku = 128 * 512
if sirka_volba == 'd':
pocet_vzorku = 1024 * 1024
sdr = RtlSdr()
pocet_oken = f_stop - f_start
f_start = f_start * 1e6
f_stop = f_stop * 1e6
sdr.sample_rate = 1.2e6 # Hz
sdr.freq_correction = +30 # korekce ochylky hodin, v PPM
sdr.gain = 12
sdr.center_freq = f_start + 0.5e6 # Hz
x = np.linspace(f_start, f_stop,
pocet_oken * (int(round(pocet_vzorku * (1 / 1.2))))
) # definice velikosti pole pro vyslednou FFT - jen pro indexy
data = sdr.read_samples(
pocet_vzorku) # testovaci aktivace prijimace, prvni vzorky nejsou kvalitni
provede_mereni = 1
pozadi_temp = 0
if pozadi_volba == 'a':
pozadi_temp = 1
raw_input("Probehne mereni pozadi, pro pokracovani stiskni ENTER")
offset = measured - freq
maxEmptyBinary = 10 # For deciding when to reset the signal tracker
print()
print("Wanted Frequency: " + (str)(trunc(freq)) +
" Hz! Actual Frequency: " + (str)(trunc(measured)) + " Hz!")
print("Offset: {0:0.0f} and Squelch: {1}".format(offset, squelch))
# Trunc does not want to cooperate with offset for some reason...
print()
#sys.exit()
sdr.sample_rate = 2.048e6 # Hz - Sample Rate is the number of samples of audio carried per second. (https://manual.audacityteam.org/man/sample_rates.html)
sdr.center_freq = measured # Hz
sdr.freq_correction = 60 # PPM - I Don't Know How This is Set - Something to Do With rtl_test -p 10
sdr.gain = 'auto'
try:
client = SDRKeyFob()
#plugin = RemotePlugin(client,
# name="hello",
# version="0.0.1",
# bg_host='127.0.0.1',
# bg_port=2337)
#plugin.run()
client.listen(sdr)
#client.printMe(sdr);
#client.plotMe(sdr); # Great for Debugging
except SystemExit as error:
print('\n' + str(error))
from pylab import *
import sounddevice as sd
from scipy.io.wavfile import write
import matplotlib.pyplot as plt
F_station = int(88.7e6) # Rutgers Radio
F_offset = 250000 # Offset to capture at
# We capture at an offset to avoid DC spike
Fc = F_station - F_offset # Capture center frequency
Fs = int(1140000) # Sample rate
N = int(4 * 8192000) # Samples to capture
sdr = RtlSdr()
sdr.sample_rate = Fs # Hz
sdr.center_freq = Fc # Hz s
sdr.freq_correction = 60 # PPM (Parts Per Million)
sdr.gain = 'auto' #pick gain value
samples = sdr.read_samples(N)
print(samples)
sdr.close()
# Read in the samples:
IQ = np.array(samples, dtype=np.complex)
print("IQ (Saad): ", IQ)
multiplied = IQ[:-1] * np.conj(IQ[1:])
demodulated = np.angle(multiplied)
print("Demodulted (IQ Mert): ", demodulated)
plt.specgram(IQ, NFFT=2048, Fs=Fs)
plt.title("x1")
plt.ylim(-Fs / 2, Fs / 2)
"""
Created on Sun Jun 7 19:35:14 2020
@author: ord
"""
import numpy as np
from rtlsdr import RtlSdr
from matplotlib import pyplot as plt
import scipy.signal as signal
sdr = RtlSdr()
#conigure device
sdr.sample_rate = 2.048e6 #Hz
sdr.center_freq = 105.5e6 #Hz
sdr.freq_correction = 60 #ppm
sdr.gain = 12.5
sdr.set_agc_mode(False)
#sdr.bandwidth = 10e6 #Hz
n = 500
nfft = 1024
tiempo_muestreo = n * nfft / sdr.sample_rate
iq = sdr.read_samples(n * nfft)
sdr.close()
# plt.specgram(iq, NFFT=1024, Fs=sdr.sample_rate, Fc = sdr.center_freq/1e6)
# plt.title("PSD of 'signal' loaded from file")
# plt.xlabel("Time")
# plt.ylabel("Frequency (MHz)")
"""
from matplotlib import mlab
from rtlsdr import RtlSdr
import numpy as np
from PIL import Image
import pygame
DISPLAY_WIDTH = 256
DISPLAY_HEIGHT = 200
SDR = RtlSdr()
# configure device
SDR.sample_rate = 2.4e6 # Hz
SDR.center_freq = 94.7e6 # Hz
SDR.freq_correction = 60 # PPM
SDR.gain = 'auto'
IMAGE = []
def get_data():
"""
Reads new samples and updates output image.
"""
samples = SDR.read_samples(16 * 1024)
power, _ = mlab.psd(samples, NFFT=1024, Fs=SDR.sample_rate / 1e6)
max_pow = 0
min_pow = 10
import numpy as np
import scipy as sp
import matplotlib.pyplot as plt
import time
import glob
from rtlsdr import RtlSdr
from scipy.signal import medfilt
flist = glob.glob('./ring/*.wav')
print(flist)
sdr = RtlSdr()
# configure device
sdr.sample_rate = 2.3e5 # Hz
sdr.center_freq = 433e6 # Hz
sdr.freq_correction = 1 # PPM
sdr.gain = 80
z = np.load("template.npy")
N = 2**16
M = 2
y = np.zeros(N * M, dtype=np.complex_)
def listen(y, N, M):
for i in range(M):
idx = np.arange(N) + i * N
x = np.array(sdr.read_samples(N))
y[idx] = x
y = np.absolute(y)
y = medfilt(y, 5)
elif (arg == "-c"): config.center_freq = int(sys.argv[i+1]) elif (arg == "-r"): config.sample_rate = int(sys.argv[i+1]) #init RTLSDR and if no then go out try: sdr = RtlSdr() except IOError: print "Probably RTLSDR device not attached" sys.exit(0) # configure device sdr.sample_rate = config.sample_rate # Hz sdr.center_freq = config.center_freq # Hz sdr.freq_correction = 60 # PPM sdr.gain = 'auto' samples = sdr.read_samples( config.sample_num ) if config.matlab_flag == False: print( samples ) else: print "samples = [", for s in samples: if s.imag < 0.0: print "%s%si "%(str(s.real), str(s.imag)), else: print "%s+%s "%(str(s.real), str(s.imag)), print "];"
