settings = {
'file_name': './GNSS_signal_records/GPS_and_GIOVE_A-NN-fs16_3676-if4_1304.bin',
'load_all_data': True,
'byte_offset': 1000,
'data_type': np.int8,
'intermediate_frequency': 4130400,
'sampling_frequency': 16367600,
'code_frequency': 1023000,
'code_length': 1023,
'code_offset': 0,
'satellites_total': 32,
'satellites_to_search': np.array([22]),#, 22)+1,#np.array([22]),
'acquisition_search_frequency_band': 14000,
'acquisition_search_frequency_step': 500,
'acquisition_threshold': 2.5,
'use_sfft': False,
'sfft_subsampling_factor': 3
}
x = gps_data_reader.read(settings)
results, performance_counter = acquisition(x, settings, plot_graphs=True, plot_3d_graphs=True)
for idx, found in enumerate(results['found']):
if found:
print '-> FOUND: prn = %s, shift = %s' % (repr(settings['satellites_to_search'][idx]), repr(results['code_shifts'][idx]))
print repr(performance_counter)
plt.show()
'code_offset': 0,
'satellites_total': 32,
'satellites_to_search': np.array([3, 15, 16, 19,
22]), #np.arange(32)+1,
'actual_satellite_shifts':
np.array([1764, 12260, 12838, 740, 8475]),
'acquisition_search_frequency_band': 14000,
'acquisition_search_frequency_step': 500,
'acquisition_threshold': 2.5,
'snr_threshold': thresholds[idx],
'use_sfft': False,
'sfft_subsampling_factor': 2,
'maximum_runs': 20,
}
x = gps_data_reader.read(settings)
results, performance_counter = acquisition(x,
settings,
plot_graphs=False,
plot_3d_graphs=False)
print results
for idx, found in enumerate(results['found']):
if found:
print '-> FOUND: prn = %s, shift = %s' % (
repr(settings['satellites_to_search'][idx]),
repr(results['code_shifts'][idx]))
print repr(performance_counter)