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bds_b3i: fixing bug in b1i for d2 decoding

This commit is contained in:
Damian Miralles 2019-03-05 16:00:26 -06:00
parent 16e66834fa
commit de964d4a77
4 changed files with 20 additions and 15 deletions
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8
conf/gnss-sdr_BDS_B1I_byte.conf
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@ -75,9 +75,9 @@ Acquisition_B1.item_type=gr_complex
Acquisition_B1.coherent_integration_time_ms=1
Acquisition_B1.threshold=0.0038
;Acquisition_B1.pfa=0.0000001;
Acquisition_B1.doppler_max=15000
Acquisition_B1.doppler_step=50
Acquisition_B1.dump=true
Acquisition_B1.doppler_max=10000
Acquisition_B1.doppler_step=100
Acquisition_B1.dump=false
Acquisition_B1.dump_filename=./bds_acq
Acquisition_B1.blocking=false;
Acquisition_B1.use_CFAR_algorithm=true;
@ -89,7 +89,7 @@ Tracking_B1.implementation=BEIDOU_B1I_DLL_PLL_Tracking
Tracking_B1.item_type=gr_complex
Tracking_B1.pll_bw_hz=25.0;
Tracking_B1.dll_bw_hz=2.50;
Tracking_B1.dump=true;
Tracking_B1.dump=false;
Tracking_B1.dump_filename=./epl_tracking_ch_

20
conf/gnss-sdr_BDS_B3I_byte.conf
View File

@ -9,16 +9,16 @@
;######### GLOBAL OPTIONS ##################
;internal_fs_sps: Internal signal sampling frequency after the signal conditioning stage [samples per second].
GNSS-SDR.internal_fs_sps=25000000
GNSS-SDR.internal_fs_sps=50000000
;######### CONTROL_THREAD CONFIG ############
ControlThread.wait_for_flowgraph=false
;######### SIGNAL_SOURCE CONFIG ############
SignalSource.implementation=File_Signal_Source
SignalSource.filename=/home/dmiralles/Documents/GNSS-Metadata-Standard/install/SJTU_Bands-BD3B3I.dat
SignalSource.filename=/home/dmiralles/Documents/GNSS-Metadata-Standard/install/BdsB3IStr01.dat
SignalSource.item_type=byte
SignalSource.sampling_frequency=25000000
SignalSource.sampling_frequency=50000000
SignalSource.samples=0
SignalSource.repeat=false
SignalSource.dump=false
@ -45,11 +45,11 @@ InputFilter.band1_error=1.0
InputFilter.band2_error=1.0
InputFilter.filter_type=bandpass
InputFilter.grid_density=16
InputFilter.sampling_frequency=25000000
InputFilter.sampling_frequency=50000000
InputFilter.IF=12500000
Resampler.implementation=Pass_Through
Resampler.sample_freq_in=25000000
Resampler.sample_freq_out=25000000
Resampler.sample_freq_in=50000000
Resampler.sample_freq_out=50000000
Resampler.item_type=gr_complex
@ -75,12 +75,12 @@ Channel12.satellite = 32;
;######### ACQUISITION GLOBAL CONFIG ############
Acquisition_B3.implementation=BEIDOU_B3I_PCPS_Acquisition
Acquisition_B3.item_type=gr_complex
Acquisition_B3.coherent_integration_time_ms=5
Acquisition_B3.max_dwells = 5
Acquisition_B3.threshold=0.0015
Acquisition_B3.coherent_integration_time_ms=1
Acquisition_B3.max_dwells = 1
Acquisition_B3.threshold=0.00035
;Acquisition_B3.pfa=0.0000001;
Acquisition_B3.doppler_max=10000
Acquisition_B3.doppler_step=100
Acquisition_B3.doppler_step=50
Acquisition_B3.dump=true
Acquisition_B3.dump_filename=./bds_acq
Acquisition_B3.blocking=false;

5
src/algorithms/telemetry_decoder/gnuradio_blocks/beidou_b1i_telemetry_decoder_cc.cc
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@ -318,8 +318,13 @@ void beidou_b1i_telemetry_decoder_cc::set_satellite(const Gnss_Satellite &satell
volk_gnsssdr_free(d_secondary_code_symbols);
volk_gnsssdr_free(d_subframe_symbols);
d_samples_per_symbol = (BEIDOU_B1I_CODE_RATE_HZ / BEIDOU_B1I_CODE_LENGTH_CHIPS) / BEIDOU_D2NAV_SYMBOL_RATE_SPS;
d_symbols_per_preamble = BEIDOU_DNAV_PREAMBLE_LENGTH_SYMBOLS;
d_samples_per_preamble = BEIDOU_DNAV_PREAMBLE_LENGTH_SYMBOLS * d_samples_per_symbol;
d_secondary_code_symbols = nullptr;
d_preamble_samples = static_cast<int32_t *>(volk_gnsssdr_malloc(d_samples_per_preamble * sizeof(int32_t), volk_gnsssdr_get_alignment()));
d_preamble_period_samples = BEIDOU_DNAV_PREAMBLE_PERIOD_SYMBOLS*d_samples_per_symbol;
d_subframe_length_symbols = BEIDOU_DNAV_PREAMBLE_PERIOD_SYMBOLS;
// Setting samples of preamble code
int32_t n = 0;

2
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
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@ -614,7 +614,7 @@ void dll_pll_veml_tracking::start_tracking()
uint32_t preambles_bits[BEIDOU_B1I_PREAMBLE_LENGTH_BITS] = {1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0};
for (uint32_t preambles_bit : preambles_bits)
{
for (int32_t j = 0; j < d_symbols_per_bit; j++)
for (uint32_t j = 0; j < d_symbols_per_bit; j++)
{
if (preambles_bit == 1)
{