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https://github.com/gnss-sdr/gnss-sdr
synced 2024-12-14 20:20:35 +00:00
Fix GLONASS extended correlator
1. Emit a message from preamble detection branch from telemetry decoder 2. Connect flowgraph message ports to pass the message from telemetry decoder block to a dll-pll-c-aid-tracking block 3. Name message ports correctly as the massage is passed in samples, not seconds Signed-off-by: Vladisslav P <vladisslav2011@gmail.com>
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0dbecdaa80
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9b210485c7
@ -128,6 +128,10 @@ void Channel::connect(gr::top_block_sptr top_block)
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// Message ports
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top_block->msg_connect(nav_->get_left_block(), pmt::mp("telemetry_to_trk"), trk_->get_right_block(), pmt::mp("telemetry_to_trk"));
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if ((trk_->get_right_block()->name() == "glonass_l1_ca_dll_pll_c_aid_tracking_cc") || (trk_->get_right_block()->name() == "glonass_l2_ca_dll_pll_c_aid_tracking_cc"))
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{
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top_block->msg_connect(nav_->get_left_block(), pmt::mp("preamble_timestamp_samples"), trk_->get_right_block(), pmt::mp("preamble_timestamp_samples"));
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}
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DLOG(INFO) << "tracking -> telemetry_decoder";
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// Message ports
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@ -158,6 +162,10 @@ void Channel::disconnect(gr::top_block_sptr top_block)
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nav_->disconnect(top_block);
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top_block->msg_disconnect(nav_->get_left_block(), pmt::mp("telemetry_to_trk"), trk_->get_right_block(), pmt::mp("telemetry_to_trk"));
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if ((trk_->get_right_block()->name() == "glonass_l1_ca_dll_pll_c_aid_tracking_cc") || (trk_->get_right_block()->name() == "glonass_l2_ca_dll_pll_c_aid_tracking_cc"))
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{
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top_block->msg_disconnect(nav_->get_left_block(), pmt::mp("preamble_timestamp_samples"), trk_->get_right_block(), pmt::mp("preamble_timestamp_samples"));
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}
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if (!flag_enable_fpga_)
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{
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top_block->msg_disconnect(acq_->get_right_block(), pmt::mp("events"), channel_msg_rx_, pmt::mp("events"));
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@ -69,6 +69,7 @@ glonass_l1_ca_telemetry_decoder_gs::glonass_l1_ca_telemetry_decoder_gs(
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this->message_port_register_out(pmt::mp("telemetry"));
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// Control messages to tracking block
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this->message_port_register_out(pmt::mp("telemetry_to_trk"));
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this->message_port_register_out(pmt::mp("preamble_timestamp_samples"));
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if (d_enable_navdata_monitor)
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{
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@ -367,6 +368,7 @@ int glonass_l1_ca_telemetry_decoder_gs::general_work(int noutput_items __attribu
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// try to decode frame
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LOG(INFO) << "Starting string decoder for GLONASS L1 C/A SAT " << this->d_satellite;
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d_preamble_index = d_sample_counter; // record the preamble sample stamp
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this->message_port_pub(pmt::mp("preamble_timestamp_samples"), pmt::mp(d_preamble_time_samples));
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d_stat = 2;
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}
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else
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@ -69,6 +69,7 @@ glonass_l2_ca_telemetry_decoder_gs::glonass_l2_ca_telemetry_decoder_gs(
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this->message_port_register_out(pmt::mp("telemetry"));
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// Control messages to tracking block
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this->message_port_register_out(pmt::mp("telemetry_to_trk"));
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this->message_port_register_out(pmt::mp("preamble_timestamp_samples"));
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if (d_enable_navdata_monitor)
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{
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@ -366,6 +367,7 @@ int glonass_l2_ca_telemetry_decoder_gs::general_work(int noutput_items __attribu
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// try to decode frame
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LOG(INFO) << "Starting string decoder for GLONASS L2 C/A SAT " << this->d_satellite;
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d_preamble_index = d_sample_counter; // record the preamble sample stamp
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this->message_port_pub(pmt::mp("preamble_timestamp_samples"), pmt::mp(d_preamble_time_samples));
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d_stat = 2;
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}
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else
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@ -87,7 +87,7 @@ void glonass_l1_ca_dll_pll_c_aid_tracking_cc::msg_handler_preamble_index(const p
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DLOG(INFO) << "Extended correlation enabled for Tracking CH " << d_channel << ": Satellite " << Gnss_Satellite(systemName[sys], d_acquisition_gnss_synchro->PRN);
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if (d_enable_extended_integration == false) // avoid re-setting preamble indicator
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{
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d_preamble_timestamp_s = pmt::to_double(msg);
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d_preamble_timestamp_samples = pmt::to_double(msg);
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d_enable_extended_integration = true;
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d_preamble_synchronized = false;
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}
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@ -138,7 +138,7 @@ glonass_l1_ca_dll_pll_c_aid_tracking_cc::glonass_l1_ca_dll_pll_c_aid_tracking_cc
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d_code_error_filt_chips_s(0.0),
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d_code_error_filt_chips_Ti(0.0),
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d_carr_phase_error_secs_Ti(0.0),
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d_preamble_timestamp_s(0.0),
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d_preamble_timestamp_samples(0.0),
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d_extend_correlation_ms(extend_correlation_ms),
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d_correlation_length_samples(static_cast<int32_t>(d_vector_length)),
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d_sample_counter(0ULL),
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@ -156,9 +156,9 @@ glonass_l1_ca_dll_pll_c_aid_tracking_cc::glonass_l1_ca_dll_pll_c_aid_tracking_cc
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d_dump(dump)
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{
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// Telemetry bit synchronization message port input
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this->message_port_register_in(pmt::mp("preamble_timestamp_s"));
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this->message_port_register_in(pmt::mp("preamble_timestamp_samples"));
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this->set_msg_handler(pmt::mp("preamble_timestamp_s"),
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this->set_msg_handler(pmt::mp("preamble_timestamp_samples"),
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#if HAS_GENERIC_LAMBDA
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[this](auto &&PH1) { msg_handler_preamble_index(PH1); });
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#else
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@ -602,7 +602,7 @@ int glonass_l1_ca_dll_pll_c_aid_tracking_cc::general_work(int noutput_items __at
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bool enable_dll_pll;
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if (d_enable_extended_integration == true)
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{
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int64_t symbol_diff = round(1000.0 * ((static_cast<double>(d_sample_counter) + d_rem_code_phase_samples) / static_cast<double>(d_fs_in) - d_preamble_timestamp_s));
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int64_t symbol_diff = round(1000.0 * ((static_cast<double>(d_sample_counter) + d_rem_code_phase_samples - d_preamble_timestamp_samples) / static_cast<double>(d_fs_in)));
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if (symbol_diff > 0 and symbol_diff % d_extend_correlation_ms == 0)
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{
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// compute coherent integration and enable tracking loop
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@ -171,7 +171,7 @@ private:
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double d_code_error_filt_chips_Ti;
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double d_carr_phase_error_secs_Ti;
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double d_preamble_timestamp_s;
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double d_preamble_timestamp_samples;
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int32_t d_extend_correlation_ms;
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// Integration period in samples
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@ -84,7 +84,7 @@ void glonass_l2_ca_dll_pll_c_aid_tracking_cc::msg_handler_preamble_index(const p
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DLOG(INFO) << "Extended correlation enabled for Tracking CH " << d_channel << ": Satellite " << Gnss_Satellite(systemName[sys], d_acquisition_gnss_synchro->PRN);
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if (d_enable_extended_integration == false) // avoid re-setting preamble indicator
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{
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d_preamble_timestamp_s = pmt::to_double(msg);
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d_preamble_timestamp_samples = pmt::to_double(msg);
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d_enable_extended_integration = true;
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d_preamble_synchronized = false;
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}
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@ -135,7 +135,7 @@ glonass_l2_ca_dll_pll_c_aid_tracking_cc::glonass_l2_ca_dll_pll_c_aid_tracking_cc
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d_code_error_filt_chips_s(0.0),
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d_code_error_filt_chips_Ti(0.0),
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d_carr_phase_error_secs_Ti(0.0),
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d_preamble_timestamp_s(0.0),
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d_preamble_timestamp_samples(0.0),
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d_extend_correlation_ms(extend_correlation_ms),
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d_correlation_length_samples(static_cast<int32_t>(d_vector_length)),
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d_sample_counter(0ULL),
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@ -153,9 +153,9 @@ glonass_l2_ca_dll_pll_c_aid_tracking_cc::glonass_l2_ca_dll_pll_c_aid_tracking_cc
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d_dump(dump)
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{
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// Telemetry bit synchronization message port input
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this->message_port_register_in(pmt::mp("preamble_timestamp_s"));
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this->message_port_register_in(pmt::mp("preamble_timestamp_samples"));
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this->set_msg_handler(pmt::mp("preamble_timestamp_s"),
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this->set_msg_handler(pmt::mp("preamble_timestamp_samples"),
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#if HAS_GENERIC_LAMBDA
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[this](auto &&PH1) { msg_handler_preamble_index(PH1); });
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#else
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@ -600,7 +600,7 @@ int glonass_l2_ca_dll_pll_c_aid_tracking_cc::general_work(int noutput_items __at
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bool enable_dll_pll;
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if (d_enable_extended_integration == true)
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{
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const int64_t symbol_diff = round(1000.0 * ((static_cast<double>(d_sample_counter) + d_rem_code_phase_samples) / static_cast<double>(d_fs_in) - d_preamble_timestamp_s));
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const int64_t symbol_diff = round(1000.0 * ((static_cast<double>(d_sample_counter) + d_rem_code_phase_samples - d_preamble_timestamp_samples) / static_cast<double>(d_fs_in)));
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if (symbol_diff > 0 and symbol_diff % d_extend_correlation_ms == 0)
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{
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// compute coherent integration and enable tracking loop
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@ -168,7 +168,7 @@ private:
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double d_code_error_filt_chips_s;
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double d_code_error_filt_chips_Ti;
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double d_carr_phase_error_secs_Ti;
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double d_preamble_timestamp_s;
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double d_preamble_timestamp_samples;
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int32_t d_extend_correlation_ms;
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// Integration period in samples
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