mirrors/gnss-sdr
1
0
Fork 0
mirror of https://github.com/gnss-sdr/gnss-sdr synced 2025-01-29 02:14:51 +00:00
Code Issues Releases Wiki Activity

Merge branch 'glonass' of https://github.com/gnss-sdr/gnss-sdr into glonass

Browse Source
This commit is contained in:
Gastd 2017-11-29 16:46:31 -02:00
commit 5a8dbb4787
7 changed files with 141 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

87
conf/gnss-sdr_GLONASS_L1_CA_ibyte_coh_trk.conf Normal file
View File

@ -0,0 +1,87 @@
[GNSS-SDR]
;######### GLOBAL OPTIONS ##################
GNSS-SDR.internal_fs_sps=6625000
;######### SIGNAL_SOURCE CONFIG ############
SignalSource.implementation=File_Signal_Source
SignalSource.filename=/archive/NT1065_GLONASS_L1_20160923_fs6625e6_if0e3_schar.bin ; <- PUT YOUR FILE HERE
SignalSource.item_type=ibyte
SignalSource.sampling_frequency=6625000
;SignalSource.freq=0
;SignalSource.samples=66250000
SignalSource.samples=0
SignalSource.dump=false;
SignalSource.dump_filename=/archive/signal_glonass.bin
;######### SIGNAL_CONDITIONER CONFIG ############
SignalConditioner.implementation=Signal_Conditioner
DataTypeAdapter.implementation=Ibyte_To_Complex
InputFilter.implementation=Pass_Through
InputFilter.item_type=gr_complex
Resampler.implementation=Direct_Resampler
Resampler.sample_freq_in=6625000
Resampler.sample_freq_out=6625000
Resampler.item_type=gr_complex
;######### CHANNELS GLOBAL CONFIG ############
Channel.signal=1G
Channels.in_acquisition=1
Channels_1G.count=8
Channel0.satellite=24 ; k=
Channel1.satellite=1 ; k=1
Channel2.satellite=2 ; k=-4
Channel3.satellite=20 ; k=-5
Channel4.satellite=21 ; k=4
;######### ACQUISITION GLOBAL CONFIG ############
Acquisition_1G.implementation=GLONASS_L1_CA_PCPS_Acquisition
Acquisition_1G.item_type=gr_complex
Acquisition_1G.threshold=0.0
Acquisition_1G.pfa=0.0001
Acquisition_1G.if=0
Acquisition_1G.doppler_max=10000
Acquisition_1G.doppler_step=250
Acquisition_1G.dump=true;
Acquisition_1G.dump_filename=/archive/glo_acquisition.dat
;Acquisition_1G.coherent_integration_time_ms=1
;Acquisition_1G.max_dwells = 5
;######### TRACKING GLOBAL CONFIG ############
Tracking_1G.implementation=GLONASS_L1_CA_DLL_PLL_C_Aid_Tracking
Tracking_1G.item_type=gr_complex
Tracking_1G.if=0
Tracking_1G.early_late_space_chips=0.5
Tracking_1G.pll_bw_hz=25.0;
Tracking_1G.dll_bw_hz=3.0;
Tracking_1G.pll_bw_narrow_hz = 20.0;
Tracking_1G.dll_bw_narrow_hz = 2.0;
Tracking_1G.extend_correlation_ms = 1;
Tracking_1G.dump=true;
Tracking_1G.dump_filename=/archive/glo_tracking_ch_
;######### TELEMETRY DECODER GPS CONFIG ############
TelemetryDecoder_1G.implementation=GLONASS_L1_CA_Telemetry_Decoder
;######### OBSERVABLES CONFIG ############
Observables.implementation=Hybrid_Observables
Observables.dump=true;
Observables.dump_filename=/archive/glo_observables.dat
;######### PVT CONFIG ############
PVT.implementation=RTKLIB_PVT
PVT.positioning_mode=Single
PVT.output_rate_ms=100
PVT.display_rate_ms=500
PVT.trop_model=Saastamoinen
PVT.flag_rtcm_server=true
PVT.flag_rtcm_tty_port=false
PVT.rtcm_dump_devname=/dev/pts/1
PVT.rtcm_tcp_port=2101
PVT.rtcm_MT1019_rate_ms=5000
PVT.rtcm_MT1045_rate_ms=5000
PVT.rtcm_MT1097_rate_ms=1000
PVT.rtcm_MT1077_rate_ms=1000
PVT.rinex_version=2

28
src/algorithms/PVT/libs/rinex_printer.cc
View File

@ -2881,17 +2881,23 @@ void Rinex_Printer::log_rinex_nav(std::fstream& out, const std::map<int,Glonass_
line += minutes;
}
line += std::string(1, ' ');
if(boost::lexical_cast<int>(seconds) < 10)
{
line += std::string(1, ' ');
line += std::string(seconds, 1, 1);
}
else
{
line += seconds;
}
line += std::string(1, ' ');
if(boost::lexical_cast<int>(seconds) < 10)
{
line += std::string(1, ' ');
line += std::string(seconds, 1, 1);
}
else
{
line += seconds;
}
line += std::string(1, '.');
std::string decimal = std::string("0");
if (timestring.size() > 16)
{
std::string decimal (timestring, 16, 1);
}
line += decimal;
line += std::string(1, ' ');
line += Rinex_Printer::doub2for(-glonass_gnav_ephemeris_iter->second.d_tau_c, 18, 2);
line += std::string(1, ' ');
line += Rinex_Printer::doub2for(glonass_gnav_ephemeris_iter->second.d_gamma_n, 18, 2);

8
src/algorithms/telemetry_decoder/gnuradio_blocks/glonass_l1_ca_telemetry_decoder_cc.cc
View File

@ -112,6 +112,7 @@ glonass_l1_ca_telemetry_decoder_cc::glonass_l1_ca_telemetry_decoder_cc(
d_flag_preamble = false;
d_channel = 0;
flag_TOW_set = false;
d_preamble_time_samples = 0;
}
@ -274,6 +275,8 @@ int glonass_l1_ca_telemetry_decoder_cc::general_work (int noutput_items __attrib
LOG(INFO) << "Preamble detection for GLONASS L1 C/A SAT " << this->d_satellite;
// Enter into frame pre-detection status
d_stat = 1;
d_preamble_time_samples = d_symbol_history.at(0).Tracking_sample_counter; // record the preamble sample stamp
}
}
else if (d_stat == 1) // posible preamble lock
@ -282,12 +285,17 @@ int glonass_l1_ca_telemetry_decoder_cc::general_work (int noutput_items __attrib
{
//check preamble separation
preamble_diff = d_sample_counter - d_preamble_index;
// Record the PRN start sample index associated to the preamble
d_preamble_time_samples = d_symbol_history.at(0).Tracking_sample_counter;
if (abs(preamble_diff - GLONASS_GNAV_PREAMBLE_PERIOD_SYMBOLS) == 0)
{
//try to decode frame
LOG(INFO) << "Starting string decoder for GLONASS L1 C/A SAT " << this->d_satellite;
d_preamble_index = d_sample_counter; //record the preamble sample stamp
d_stat = 2;
// send asynchronous message to tracking to inform of frame sync and extend correlation time
pmt::pmt_t value = pmt::from_double(static_cast<double>(d_preamble_time_samples) / static_cast<double>(d_symbol_history.at(0).fs) - 0.001);
this->message_port_pub(pmt::mp("preamble_timestamp_s"), value);
}
else
{

3
src/algorithms/telemetry_decoder/gnuradio_blocks/glonass_l1_ca_telemetry_decoder_cc.h
View File

@ -79,6 +79,9 @@ private:
void decode_string(double *symbols, int frame_length);
//!< Help with coherent tracking
double d_preamble_time_samples;
//!< Preamble decoding
unsigned short int d_preambles_bits[GLONASS_GNAV_PREAMBLE_LENGTH_BITS];
int *d_preambles_symbols;

32
src/algorithms/tracking/gnuradio_blocks/glonass_l1_ca_dll_pll_c_aid_tracking_cc.cc
View File

@ -216,6 +216,9 @@ glonass_l1_ca_dll_pll_c_aid_tracking_cc::glonass_l1_ca_dll_pll_c_aid_tracking_cc
d_code_error_filt_chips_s = 0.0;
d_carr_phase_error_secs_Ti = 0.0;
d_preamble_timestamp_s = 0.0;
d_carrier_frequency_hz = 0.0;
//set_min_output_buffer((long int)300);
}
@ -264,10 +267,13 @@ void glonass_l1_ca_dll_pll_c_aid_tracking_cc::start_tracking()
d_acq_code_phase_samples = corrected_acq_phase_samples;
d_carrier_doppler_hz = d_acq_carrier_doppler_hz + d_if_freq + (DFRQ1_GLO * GLONASS_PRN.at(d_acquisition_gnss_synchro->PRN));
// d_carrier_doppler_hz = d_acq_carrier_doppler_hz + d_if_freq + (DFRQ1_GLO * GLONASS_PRN.at(d_acquisition_gnss_synchro->PRN));
// d_carrier_doppler_hz = d_acq_carrier_doppler_hz;
// d_carrier_phase_step_rad = GLONASS_TWO_PI * d_carrier_doppler_hz / static_cast<double>(d_fs_in);
d_carrier_frequency_hz = d_acq_carrier_doppler_hz + d_if_freq + (DFRQ1_GLO * GLONASS_PRN.at(d_acquisition_gnss_synchro->PRN));
d_carrier_doppler_hz = d_acq_carrier_doppler_hz;
d_carrier_phase_step_rad = GLONASS_TWO_PI * d_carrier_frequency_hz / static_cast<double>(d_fs_in);
d_carrier_phase_step_rad = GLONASS_TWO_PI * d_carrier_doppler_hz / static_cast<double>(d_fs_in);
// DLL/PLL filter initialization
d_carrier_loop_filter.initialize(d_acq_carrier_doppler_hz); // The carrier loop filter implements the Doppler accumulator
@ -300,8 +306,8 @@ void glonass_l1_ca_dll_pll_c_aid_tracking_cc::start_tracking()
// enable tracking
d_pull_in = true;
d_enable_tracking = true;
d_enable_extended_integration = true;
d_preamble_synchronized = true;
d_enable_extended_integration = false;
d_preamble_synchronized = false;
LOG(INFO) << "PULL-IN Doppler [Hz]=" << d_carrier_doppler_hz
<< " Code Phase correction [samples]=" << delay_correction_samples
<< " PULL-IN Code Phase [samples]=" << d_acq_code_phase_samples;
@ -335,12 +341,18 @@ glonass_l1_ca_dll_pll_c_aid_tracking_cc::~glonass_l1_ca_dll_pll_c_aid_tracking_c
}
}
volk_gnsssdr_free(d_local_code_shift_chips);
volk_gnsssdr_free(d_correlator_outs);
volk_gnsssdr_free(d_ca_code);
delete[] d_Prompt_buffer;
multicorrelator_cpu.free();
try
{
volk_gnsssdr_free(d_local_code_shift_chips);
volk_gnsssdr_free(d_correlator_outs);
volk_gnsssdr_free(d_ca_code);
delete[] d_Prompt_buffer;
multicorrelator_cpu.free();
}
catch(const std::exception & ex)
{
LOG(WARNING) << "Exception in destructor " << ex.what();
}
}

3
src/algorithms/tracking/gnuradio_blocks/glonass_l1_ca_dll_pll_c_aid_tracking_cc.h
View File

@ -1,5 +1,5 @@
/*!
* \file glonass_l1_ca_dll_pll_tracking.h
* \file glonass_l1_ca_dll_pll_c_aid_tracking_cc.h
* \brief Interface of an adapter of a DLL+PLL tracking loop block
* for Glonass L1 C/A to a TrackingInterface
* \author Gabriel Araujo, 2017. gabriel.araujo.5000(at)gmail.com
@ -157,6 +157,7 @@ private:
double d_code_freq_chips;
double d_code_phase_step_chips;
double d_carrier_doppler_hz;
double d_carrier_frequency_hz;
double d_carrier_phase_step_rad;
double d_acc_carrier_phase_cycles;
double d_code_phase_samples;

2
src/algorithms/tracking/gnuradio_blocks/glonass_l1_ca_dll_pll_tracking_cc.cc
View File

@ -182,6 +182,8 @@ Glonass_L1_Ca_Dll_Pll_Tracking_cc::Glonass_L1_Ca_Dll_Pll_Tracking_cc(
d_code_phase_step_chips = 0.0;
d_carrier_phase_step_rad = 0.0;
d_glonass_freq_ch = 0;
set_relative_rate(1.0 / static_cast<double>(d_vector_length));
}