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bds: Bug fixes in carrier wavelength computation

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Changed wavelength computation to native method within RTKLIb. The native method
 should also help in the PVT computation of GLONASS satellites as it considers
the freq. offset when computing the wavelength. This also fixes typo in tracking
 stage for MEO satellites of the BDS constellation.

Note: A similar approach to carrier wavelength computation should be applied to
the obs_data in rtk_solver. In theory, static allocation should not be needed for
the types.
This commit is contained in:
Damian Miralles 2019-07-14 20:09:52 -05:00
parent cd54aca1e2
commit 410269069a
No known key found for this signature in database
GPG Key ID: 8A92BA854ED245E1
7 changed files with 21 additions and 306 deletions
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274
conf/gnss-sdr_BDS_B1I_GPS_L1_CA_byte.conf
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@ -1,274 +0,0 @@
; This is a GNSS-SDR configuration file
; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
; You can define your own receiver and invoke it by doing
; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
;
[GNSS-SDR]
;######### GLOBAL OPTIONS ##################
;internal_fs_sps: Internal signal sampling frequency after the signal conditioning stage [samples per second].
GNSS-SDR.internal_fs_sps=25000000
Receiver.sources_count=2
;######### CONTROL_THREAD CONFIG ############
ControlThread.wait_for_flowgraph=false
;######### SIGNAL_SOURCE CONFIG ############
;# Signal Source config for GPS, Galileo signals
SignalSource0.implementation=File_Signal_Source
SignalSource0.filename=/home/dmiralles/Documents/GNSS-Metadata-Standard/install/GPSL1-GalileoE1.dat
SignalSource0.item_type=byte
SignalSource0.sampling_frequency=25000000
SignalSource0.samples=0
SignalSource0.repeat=false
SignalSource0.dump=false
SignalSource0.enable_throttle_control=false
;# Signal Source config for BDS signals
SignalSource1.implementation=File_Signal_Source
SignalSource1.filename=/home/dmiralles/Documents/GNSS-Metadata-Standard/install/BdsB1IStr01.dat
SignalSource1.item_type=byte
SignalSource1.sampling_frequency=25000000
SignalSource1.samples=0
SignalSource1.repeat=false
SignalSource1.dump=false
SignalSource1.enable_throttle_control=false
;######### SIGNAL_CONDITIONER CONFIG ############
;# Signal Conditioner config for GPS, Galileo signals
SignalConditioner0.implementation=Signal_Conditioner
DataTypeAdapter0.implementation=Byte_To_Short
InputFilter0.implementation=Freq_Xlating_Fir_Filter
InputFilter0.input_item_type=short
InputFilter0.output_item_type=gr_complex
InputFilter0.taps_item_type=float
InputFilter0.number_of_taps=5
InputFilter0.number_of_bands=2
InputFilter0.band1_begin=0.0
InputFilter0.band1_end=0.70
InputFilter0.band2_begin=0.80
InputFilter0.band2_end=1.0
InputFilter0.ampl1_begin=1.0
InputFilter0.ampl1_end=1.0
InputFilter0.ampl2_begin=0.0
InputFilter0.ampl2_end=0.0
InputFilter0.band1_error=1.0
InputFilter0.band2_error=1.0
InputFilter0.filter_type=bandpass
InputFilter0.grid_density=16
InputFilter0.sampling_frequency=25000000
InputFilter0.IF=6250000
Resampler0.implementation=Pass_Through
Resampler0.sample_freq_in=25000000
Resampler0.sample_freq_out=25000000
Resampler0.item_type=gr_complex
;# Signal Conditioner config for BDS signals
SignalConditioner1.implementation=Signal_Conditioner
DataTypeAdapter1.implementation=Byte_To_Short
InputFilter1.implementation=Freq_Xlating_Fir_Filter
InputFilter1.input_item_type=short
InputFilter1.output_item_type=gr_complex
InputFilter1.taps_item_type=float
InputFilter1.number_of_taps=5
InputFilter1.number_of_bands=2
InputFilter1.band1_begin=0.0
InputFilter1.band1_end=0.70
InputFilter1.band2_begin=0.80
InputFilter1.band2_end=1.0
InputFilter1.ampl1_begin=1.0
InputFilter1.ampl1_end=1.0
InputFilter1.ampl2_begin=0.0
InputFilter1.ampl2_end=0.0
InputFilter1.band1_error=1.0
InputFilter1.band2_error=1.0
InputFilter1.filter_type=bandpass
InputFilter1.grid_density=16
InputFilter1.sampling_frequency=25000000
InputFilter1.IF=6250000
Resampler1.implementation=Pass_Through
Resampler1.sample_freq_in=25000000
Resampler1.sample_freq_out=25000000
Resampler1.item_type=gr_complex
;######### CHANNELS GLOBAL CONFIG ############
Channels_1C.count=7
Channels_1B.count=7
Channels_B1.count=10
Channels.in_acquisition=10
;# Preparing collection for GPS satellites
Channel0.RF_channel_ID=0
Channel1.RF_channel_ID=0
Channel2.RF_channel_ID=0
Channel3.RF_channel_ID=0
Channel4.RF_channel_ID=0
Channel5.RF_channel_ID=0
Channel6.RF_channel_ID=0
Channel0.signal=1C
Channel0.satellite = 2
Channel1.signal=1C
Channel1.satellite = 5
Channel2.signal=1C
Channel2.satellite = 6
Channel3.signal=1C
Channel3.satellite = 7
Channel4.signal=1C
Channel4.satellite = 13
Channel5.signal=1C
Channel5.satellite = 19
Channel6.signal=1C
Channel6.satellite = 29
;# Preparing collection for Galileo satellites
Channel7.RF_channel_ID=0
Channel8.RF_channel_ID=0
Channel9.RF_channel_ID=0
Channel10.RF_channel_ID=0
Channel11.RF_channel_ID=0
Channel12.RF_channel_ID=0
Channel13.RF_channel_ID=0
Channel7.signal=1B
Channel7.satellite = 2
Channel8.signal=1B
Channel8.satellite = 5
Channel9.signal=1B
Channel9.satellite = 6
Channel10.signal=1B
Channel10.satellite = 7
Channel11.signal=1B
Channel11.satellite = 13
Channel12.signal=1B
Channel12.satellite = 19
Channel13.signal=1B
Channel13.satellite = 29
;# Preparing collection for BDS satellites
Channel14.RF_channel_ID=1
Channel15.RF_channel_ID=1
Channel16.RF_channel_ID=1
Channel17.RF_channel_ID=1
Channel18.RF_channel_ID=1
Channel19.RF_channel_ID=1
Channel20.RF_channel_ID=1
Channel21.RF_channel_ID=1
Channel22.RF_channel_ID=1
Channel23.RF_channel_ID=1
Channel14.signal=B1
Channel14.satellite = 6
Channel15.signal=B1
Channel15.satellite = 8
Channel16.signal=B1
Channel16.satellite = 9
Channel17.signal=B1
Channel17.satellite = 13
Channel18.signal=B1
Channel18.satellite = 17
Channel19.signal=B1
Channel19.satellite = 1
Channel20.signal=B1
Channel20.satellite = 2
Channel21.signal=B1
Channel21.satellite = 3
Channel22.signal=B1
Channel22.satellite = 4
Channel23.signal=B1
Channel23.satellite = 5
;######### ACQUISITION GLOBAL CONFIG ############
;# Acquisition config for BDS signals
Acquisition_B1.implementation=BEIDOU_B1I_PCPS_Acquisition
Acquisition_B1.item_type=gr_complex
Acquisition_B1.coherent_integration_time_ms=1
Acquisition_B1.threshold=0.0038
Acquisition_B1.doppler_max=15000
Acquisition_B1.doppler_step=100
Acquisition_B1.dump=true
Acquisition_B1.dump_filename=/home/dmiralles/Documents/Research/Publications/INSIDE_GNSS/bds_leg_pvt/Data/bds_b1i_acq
Acquisition_B1.blocking=false;
Acquisition_B1.use_CFAR_algorithm=true;
Acquisition_B1.bit_transition_flag = false;
;# Acquisition config for GPS signals
Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition
Acquisition_1C.item_type=gr_complex
Acquisition_1C.coherent_integration_time_ms=1
Acquisition_1C.threshold=0.0038
Acquisition_1C.doppler_max=15000
Acquisition_1C.doppler_step=100
Acquisition_1C.dump=true
Acquisition_1C.dump_filename=/home/dmiralles/Documents/Research/Publications/INSIDE_GNSS/bds_leg_pvt/Data/gps_l1ca_acq
Acquisition_1C.blocking=false;
Acquisition_1C.use_CFAR_algorithm=true;
Acquisition_1C.bit_transition_flag = false;
;# Acquisition config for Galileo signals
Acquisition_1B.implementation=Galileo_E1_PCPS_Ambiguous_Acquisition
Acquisition_1B.item_type=gr_complex
Acquisition_1B.coherent_integration_time_ms=4
Acquisition_1B.threshold=0.0038
Acquisition_1B.doppler_max=15000
Acquisition_1B.doppler_step=100
Acquisition_1B.dump=true
Acquisition_1B.dump_filename=/home/dmiralles/Documents/Research/Publications/INSIDE_GNSS/bds_leg_pvt/Data/gal_e1b_acq
Acquisition_1B.blocking=false;
Acquisition_1B.use_CFAR_algorithm=true;
Acquisition_1B.bit_transition_flag = false;
;######### TRACKING GLOBAL CONFIG ############
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_filename=/home/dmiralles/Documents/Research/Publications/INSIDE_GNSS/bds_leg_pvt/Data/bds_b1i_trk_ch_
Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
Tracking_1C.item_type=gr_complex
Tracking_1C.pll_bw_hz=25.0;
Tracking_1C.dll_bw_hz=2.50;
Tracking_1C.dump=true;
Tracking_1C.dump_filename=/home/dmiralles/Documents/Research/Publications/INSIDE_GNSS/bds_leg_pvt/Data/gps_l1ca_trk_ch_
Tracking_1B.implementation=Galileo_E1_DLL_PLL_VEML_Tracking
Tracking_1B.item_type=gr_complex
Tracking_1B.pll_bw_hz=25.0;
Tracking_1B.dll_bw_hz=2.50;
Tracking_1B.dump=true;
Tracking_1B.dump_filename=/home/dmiralles/Documents/Research/Publications/INSIDE_GNSS/bds_leg_pvt/Data/gal_e1b_trk_ch_
;######### TELEMETRY DECODER GPS CONFIG ############
TelemetryDecoder_B1.implementation=BEIDOU_B1I_Telemetry_Decoder
TelemetryDecoder_B1.dump=false
TelemetryDecoder_1C.implementation=GPS_L1_CA_Telemetry_Decoder
TelemetryDecoder_1C.dump=false
TelemetryDecoder_1B.implementation=Galileo_E1B_Telemetry_Decoder
TelemetryDecoder_1B.dump=false
;######### OBSERVABLES CONFIG ############
Observables.implementation=Hybrid_Observables
Observables.dump=true
Observables.dump_filename=./observables.dat
;######### PVT CONFIG ############
PVT.implementation=RTKLIB_PVT
PVT.positioning_mode=Single ; options: Single, Static, Kinematic, PPP_Static, PPP_Kinematic
PVT.iono_model=OFF ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
PVT.trop_model=Saastamoinen ; options: OFF, Saastamoinen, SBAS, Estimate_ZTD, Estimate_ZTD_Grad
PVT.output_rate_ms=100
PVT.display_rate_ms=500
PVT.dump=true
PVT.dump_filename = /home/dmiralles/Documents/Research/Publications/INSIDE_GNSS/bds_leg_pvt/Data/pvt_l1
PVT.kml_output_enabled = false;
PVT.xml_output_enabled = false;
PVT.gpx_output_enabled = false;
PVT.rinex_output_enabled = false;
PVT.rtcm_output_enabled = false;
PVT.nmea_output_enabled = false;
PVT.geojson_output_enabled = false;

11
conf/gnss-sdr_BDS_B1I_byte.conf
View File

@ -91,25 +91,25 @@ 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_
;######### TELEMETRY DECODER GPS CONFIG ############
TelemetryDecoder_B1.implementation=BEIDOU_B1I_Telemetry_Decoder
TelemetryDecoder_B1.dump=true
TelemetryDecoder_B1.dump=false
;######### OBSERVABLES CONFIG ############
Observables.implementation=Hybrid_Observables
Observables.dump=true
Observables.dump=false
Observables.dump_filename=./observables.dat
;######### PVT CONFIG ############
PVT.implementation=RTKLIB_PVT
PVT.positioning_mode=Single ; options: Single, Static, Kinematic, PPP_Static, PPP_Kinematic
PVT.iono_model=OFF ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
PVT.iono_model=Broadcast ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
PVT.trop_model=Saastamoinen ; options: OFF, Saastamoinen, SBAS, Estimate_ZTD, Estimate_ZTD_Grad
PVT.output_rate_ms=100
PVT.display_rate_ms=500
@ -121,3 +121,6 @@ PVT.flag_rtcm_server=false
PVT.flag_rtcm_tty_port=false
PVT.rtcm_dump_devname=/dev/pts/1
PVT.dump=true
PVT.rinex_version=3
PVT.rinex_output_enabled=true
PVT.gpx_output_enabled=true

4
conf/gnss-sdr_BDS_B3I_byte.conf
View File

@ -100,14 +100,14 @@ TelemetryDecoder_B3.dump=false
;######### OBSERVABLES CONFIG ############
Observables.implementation=Hybrid_Observables
Observables.dump=true
Observables.dump=false
Observables.dump_filename=./observables.dat
;######### PVT CONFIG ############
PVT.implementation=RTKLIB_PVT
PVT.positioning_mode=Single ; options: Single, Static, Kinematic, PPP_Static, PPP_Kinematic
PVT.iono_model=OFF ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
PVT.iono_model=Broadcast ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
PVT.trop_model=Saastamoinen ; options: OFF, Saastamoinen, SBAS, Estimate_ZTD, Estimate_ZTD_Grad
PVT.output_rate_ms=100
PVT.display_rate_ms=500

25
src/algorithms/PVT/libs/rtklib_solver.cc
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@ -414,8 +414,8 @@ bool Rtklib_Solver::get_PVT(const std::map<int, Gnss_Synchro> &gnss_observables_
int glo_valid_obs = 0; // GLONASS L1/L2 valid observations counter
std::array<obsd_t, MAXOBS> obs_data{};
std::array<eph_t, MAXOBS> eph_data{};
std::array<geph_t, MAXOBS> geph_data{};
std::vector<eph_t> eph_data(MAXOBS);
std::vector<geph_t> geph_data(MAXOBS);
// Workaround for NAV/CNAV clash problem
bool gps_dual_band = false;
@ -754,7 +754,7 @@ bool Rtklib_Solver::get_PVT(const std::map<int, Gnss_Synchro> &gnss_observables_
obs_data[i + glo_valid_obs] = insert_obs_to_rtklib(obs_data[i + glo_valid_obs],
gnss_observables_iter->second,
beidou_ephemeris_iter->second.i_BEIDOU_week + BEIDOU_DNAV_BDT2GPST_WEEK_NUM_OFFSET,
1); // Band 3 (L2/G2/B3)
2); // Band 3 (L2/G2/B3)
found_B1I_obs = true;
break;
}
@ -772,7 +772,7 @@ bool Rtklib_Solver::get_PVT(const std::map<int, Gnss_Synchro> &gnss_observables_
obs_data[valid_obs + glo_valid_obs] = insert_obs_to_rtklib(newobs,
gnss_observables_iter->second,
beidou_ephemeris_iter->second.i_BEIDOU_week + BEIDOU_DNAV_BDT2GPST_WEEK_NUM_OFFSET,
1); // Band 2 (L2/G2)
2); // Band 2 (L2/G2)
valid_obs++;
}
}
@ -884,21 +884,8 @@ bool Rtklib_Solver::get_PVT(const std::map<int, Gnss_Synchro> &gnss_observables_
nav_data.leaps = beidou_dnav_utc_model.d_DeltaT_LS;
}
for (auto &lambda_ : nav_data.lam)
{
lambda_[0] = SPEED_OF_LIGHT / FREQ1; // L1/E1
lambda_[1] = SPEED_OF_LIGHT / FREQ2; // L2
lambda_[2] = SPEED_OF_LIGHT / FREQ5; // L5/E5
// Keep update on sat number
sat++;
if (sat > NSYSGPS + NSYSGLO + NSYSGAL + NSYSQZS and sat < NSYSGPS + NSYSGLO + NSYSGAL + NSYSQZS + NSYSBDS)
{
lambda_[0] = SPEED_OF_LIGHT / FREQ1_BDS; // B1I
lambda_[1] = SPEED_OF_LIGHT / FREQ3_BDS; // B3I
lambda_[2] = SPEED_OF_LIGHT / FREQ5; // L5/E5
}
}
/* update carrier wave length using native function call in RTKlib */
uniqnav(&nav_data);
result = rtkpos(&rtk_, obs_data.data(), valid_obs + glo_valid_obs, &nav_data);

7
src/algorithms/libs/rtklib/rtklib_pntpos.cc
View File

@ -166,9 +166,8 @@ double prange(const obsd_t *obs, const nav_t *nav, const double *azel,
return 0.0;
}
/* L1-L2 for GPS/GLO/QZS, L1-L5 for GAL/SBS */
if (sys == SYS_GAL or sys == SYS_SBS)
/* L1-L2 for GPS/GLO/QZS, L1-L5 for GAL/SBS/BDS */
if (sys == SYS_GAL or sys == SYS_SBS or sys == SYS_BDS)
{
j = 2;
}
@ -285,7 +284,7 @@ double prange(const obsd_t *obs, const nav_t *nav, const double *azel,
if (sys == SYS_BDS)
{
P2 += P2_C2; /* C2->P2 */
PC = P2; // no tgd corrections for B3I
PC = P2; // no tgd corrections for B3I
}
else if (sys == SYS_GAL or sys == SYS_GLO or sys == SYS_BDS) // Gal. E5a single freq.
{

2
src/algorithms/telemetry_decoder/gnuradio_blocks/beidou_b1i_telemetry_decoder_gs.cc
View File

@ -267,7 +267,7 @@ void beidou_b1i_telemetry_decoder_gs::decode_subframe(float *frame_symbols)
std::shared_ptr<Beidou_Dnav_Iono> tmp_obj = std::make_shared<Beidou_Dnav_Iono>(d_nav.get_iono());
this->message_port_pub(pmt::mp("telemetry"), pmt::make_any(tmp_obj));
LOG(INFO) << "BEIDOU DNAV Iono have been received in channel" << d_channel << " from satellite " << d_satellite;
std::cout << "New BEIDOU B1I DNAV Iono message received in channel " << d_channel << ": Iono model parameters from satellite " << d_satellite << TEXT_RESET << std::endl;
std::cout << TEXT_YELLOW << "New BEIDOU B1I DNAV Iono message received in channel " << d_channel << ": Iono model parameters from satellite " << d_satellite << TEXT_RESET << std::endl;
}
if (d_nav.have_new_almanac() == true)
{

4
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
View File

@ -665,7 +665,7 @@ void dll_pll_veml_tracking::start_tracking()
d_symbols_per_bit = BEIDOU_B1I_TELEMETRY_SYMBOLS_PER_BIT; //todo: enable after fixing beidou symbol synchronization
d_correlation_length_ms = 1;
d_code_samples_per_chip = 1;
d_secondary = false;
d_secondary = true;
trk_parameters.track_pilot = false;
// synchronize and remove data secondary code
d_secondary_code_length = static_cast<uint32_t>(BEIDOU_B1I_SECONDARY_CODE_LENGTH);
@ -685,7 +685,7 @@ void dll_pll_veml_tracking::start_tracking()
d_symbols_per_bit = BEIDOU_B3I_GEO_TELEMETRY_SYMBOLS_PER_BIT; //todo: enable after fixing beidou symbol synchronization
d_correlation_length_ms = 1;
d_code_samples_per_chip = 1;
d_secondary = true;
d_secondary = false;
trk_parameters.track_pilot = false;
// set the preamble in the secondary code acquisition
d_secondary_code_length = static_cast<uint32_t>(BEIDOU_B3I_GEO_PREAMBLE_LENGTH_SYMBOLS);