help='begin scan here, in Hertz')
parser.add_argument('--stop',
type=int,
default=108000000,
help='stop scan here, in Hertz')
parser.add_argument('--step',
type=int,
default=100000,
help='step size for scan, in Hertz')
args = parser.parse_args()
model = load_model('fourthModel.h5')
sdr = RtlSdr()
sdr.sample_rate = sample_rate = 2400000
sdr.err_ppm = 56
sdr.gain = 'auto'
#model.save('fourthModel.h5')
train_path = 'training_data'
correct_predictions = 0
classes = [
d for d in os.listdir(train_path)
if os.path.isdir(os.path.join(train_path, d))
]
num_classes = len(classes)
freq = args.start
while freq <= args.stop:
samples = []
plt.xticks(np.linspace(-sample_rate / 2e3, sample_rate / 2e3, 7))
plt.xlim(-sample_rate / 2e3, sample_rate / 2e3)
# draw it
plt.show()
def randomword(length):
letters = string.ascii_lowercase
return ''.join(random.choice(letters) for i in range(length))
sdr = RtlSdr()
sdr.sample_rate = sample_rate = 2400000
dec_rate = 48
sdr.err_ppm = 56 # change it to yours
sdr.gain = 20 # change it to yours, it is better to obtain samples at different gain levels
# collect "other" class training data
# for example here we are scanning ether from 110M to 144M assuming there are no interesting signals (it's not true)
freq = 114000000
while freq <= 144000000:
print(' reading at', freq)
iq_samples = read_samples(sdr, freq)
iq_samples = signal.decimate(iq_samples, dec_rate, zero_phase=None)
filename = "training_data/other/samples-" + randomword(16) + ".npy"
np.save(filename, iq_samples)
freq += 50000
# collect "wfm" class traininig data
for i in range(0, 1000):
process(samples, rtl_sdr_obj)
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('--ppm', type=int, default=0, help='ppm error correction')
parser.add_argument('--gain', type=int, default=20, help='RF gain level')
parser.add_argument('--freq',
type=int,
default=92900000,
help='frequency to listen to, in Hertz')
parser.add_argument('--verbose', action='store_true', help='mute audio output')
args = parser.parse_args()
sdr = RtlSdr()
sdr.rs = 1024000
sdr.fc = args.freq
sdr.gain = args.gain
sdr.err_ppm = args.ppm
sdr.read_samples_async(read_callback, int(sdr.get_sample_rate()) // 16)
