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removed non essential instructions in start_tracking() function and moved them to set_gnss_synchro (which is called with a valid PRN before starting an acquisition of a new channel)

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This commit is contained in:
Marc Majoral 2019-04-02 15:53:16 +02:00
parent 5bc7a778e9
commit db05be36d1
1 changed files with 22 additions and 10 deletions
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32
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc
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@ -433,7 +433,6 @@ dll_pll_veml_tracking_fpga::dll_pll_veml_tracking_fpga(const Dll_Pll_Conf_Fpga &
multicorrelator_fpga->set_output_vectors(d_correlator_outs, d_Prompt_Data);
//multicorrelator_fpga->fpga_compute_signal_parameters_in_fpga();
d_sample_counter_next = 0ULL;
}
void dll_pll_veml_tracking_fpga::msg_handler_telemetry_to_trk(const pmt::pmt_t &msg)
@ -477,21 +476,21 @@ void dll_pll_veml_tracking_fpga::start_tracking()
d_carrier_doppler_hz = d_acq_carrier_doppler_hz;
d_carrier_phase_step_rad = PI_2 * d_carrier_doppler_hz / trk_parameters.fs_in;
d_carrier_phase_rate_step_rad = 0.0;
// filter initialization
//printf("d_carrier_loop_filter init d_acq_carrier_doppler_hz = %lf\n", d_acq_carrier_doppler_hz);
d_carrier_loop_filter.initialize(static_cast<float>(d_acq_carrier_doppler_hz)); // initialize the carrier filter
// DEBUG OUTPUT
std::cout << "Tracking of " << systemName << " " << signal_pretty_name << " signal started on channel " << d_channel << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl;
DLOG(INFO) << "Starting tracking of satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << " on channel " << d_channel;
// // DEBUG OUTPUT
// std::cout << "Tracking of " << systemName << " " << signal_pretty_name << " signal started on channel " << d_channel << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl;
// DLOG(INFO) << "Starting tracking of satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << " on channel " << d_channel;
// enable tracking pull-in
d_state = 1;
d_cloop = true;
d_pull_in_transitory = true;
d_Prompt_circular_buffer.clear();
//d_pull_in_transitory = true;
// d_Prompt_buffer_deque.clear();
// d_last_prompt = gr_complex(0.0, 0.0);
}
@ -1284,12 +1283,15 @@ void dll_pll_veml_tracking_fpga::set_gnss_synchro(Gnss_Synchro *p_gnss_synchro)
d_acquisition_gnss_synchro = p_gnss_synchro;
if (p_gnss_synchro->PRN > 0)
{
//std::cout << "Acquisition is about to start " << std::endl;
// When using the FPGA the SW only reads the sample counter during active tracking.
// For the temporary pull-in conditions to work the sample_counter in the SW must be
// cleared before reading the actual sample counter from the FPGA the first time
d_sample_counter = 0;
d_sample_counter_next = 0;
//std::cout << "Acquisition is about to start " << std::endl;
d_carrier_phase_rate_step_rad = 0.0;
d_code_ph_history.clear();
// DLL/PLL filter initialization
@ -1364,8 +1366,14 @@ void dll_pll_veml_tracking_fpga::set_gnss_synchro(Gnss_Synchro *p_gnss_synchro)
multicorrelator_fpga->set_local_code_and_taps(d_local_code_shift_chips, d_prompt_data_shift, d_acquisition_gnss_synchro->PRN);
d_pull_in_transitory = true;
//d_Prompt_buffer_deque.clear();
d_last_prompt = gr_complex(0.0, 0.0);
d_cloop = true;
d_Prompt_circular_buffer.clear();
}
}
@ -1469,6 +1477,10 @@ int dll_pll_veml_tracking_fpga::general_work(int noutput_items __attribute__((un
d_acc_carrier_phase_rad -= d_carrier_phase_step_rad * static_cast<double>(samples_offset);
d_state = 2;
// DEBUG OUTPUT
std::cout << "Tracking of " << systemName << " " << signal_pretty_name << " signal started on channel " << d_channel << " for satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl;
DLOG(INFO) << "Starting tracking of satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << " on channel " << d_channel;
DLOG(INFO) << "Number of samples between Acquisition and Tracking = " << acq_trk_diff_samples << " ( " << acq_trk_diff_seconds << " s)";
std::cout << "Number of samples between Acquisition and Tracking = " << acq_trk_diff_samples << " ( " << acq_trk_diff_seconds << " s)" << std::endl;
DLOG(INFO) << "PULL-IN Doppler [Hz] = " << d_carrier_doppler_hz
@ -1772,7 +1784,7 @@ void dll_pll_veml_tracking_fpga::run_state_2(Gnss_Synchro &current_synchro_data)
// UPDATE INTEGRATION TIME
d_extend_correlation_symbols_count = 0;
d_current_correlation_time_s = static_cast<float>(trk_parameters.extend_correlation_symbols) * static_cast<float>(d_code_period);
float new_correlation_time = static_cast<float>(trk_parameters.extend_correlation_symbols) * static_cast<float>(d_code_period);
//float new_correlation_time = static_cast<float>(trk_parameters.extend_correlation_symbols) * static_cast<float>(d_code_period);
//d_carrier_loop_filter_old.set_pdi(new_correlation_time);
//d_code_loop_filter_old.set_pdi(new_correlation_time);
d_state = 3; // next state is the extended correlator integrator