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This commit is contained in:
Carles Fernandez 2018-06-21 09:53:47 +02:00
parent 8035050caa
commit 68fd25a20f
2 changed files with 659 additions and 345 deletions
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166
src/tests/unit-tests/signal-processing-blocks/acquisition/gps_l1_acq_performance_test.cc
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@ -38,59 +38,60 @@
DEFINE_string(config_file_ptest, std::string(""), "File containing the configuration parameters for the position test."); DEFINE_string(config_file_ptest, std::string(""), "File containing the configuration parameters for the position test.");
// ######## GNURADIO BLOCK MESSAGE RECEVER ######### // ######## GNURADIO BLOCK MESSAGE RECEVER #########
//class AcqPerfTest_msg_rx; class AcqPerfTest_msg_rx;
// //
//typedef boost::shared_ptr<AcqPerfTest_msg_rx> AcqPerfTest_msg_rx_sptr; typedef boost::shared_ptr<AcqPerfTest_msg_rx> AcqPerfTest_msg_rx_sptr;
// //
//AcqPerfTest_msg_rx_sptr AcqPerfTest_msg_rx_make(); AcqPerfTest_msg_rx_sptr AcqPerfTest_msg_rx_make();
// //
//class AcqPerfTest_msg_rx : public gr::block class AcqPerfTest_msg_rx : public gr::block
//{ {
//private: private:
// friend AcqPerfTest_msg_rx_sptr AcqPerfTest_msg_rx_make(); friend AcqPerfTest_msg_rx_sptr AcqPerfTest_msg_rx_make();
// void msg_handler_events(pmt::pmt_t msg); void msg_handler_events(pmt::pmt_t msg);
// AcqPerfTest_msg_rx(); AcqPerfTest_msg_rx();
//
//public: public:
// int rx_message; int rx_message;
// ~AcqPerfTest_msg_rx(); //!< Default destructor ~AcqPerfTest_msg_rx(); //!< Default destructor
//}; };
//
//
//AcqPerfTest_msg_rx_sptr AcqPerfTest_msg_rx_make() AcqPerfTest_msg_rx_sptr AcqPerfTest_msg_rx_make()
//{ {
// return AcqPerfTest_msg_rx_sptr(new AcqPerfTest_msg_rx()); return AcqPerfTest_msg_rx_sptr(new AcqPerfTest_msg_rx());
//} }
//
//
//void AcqPerfTest_msg_rx::msg_handler_events(pmt::pmt_t msg) void AcqPerfTest_msg_rx::msg_handler_events(pmt::pmt_t msg)
//{ {
// try try
// { {
// long int message = pmt::to_long(msg); long int message = pmt::to_long(msg);
// rx_message = message; rx_message = message;
// } }
// catch (boost::bad_any_cast& e) catch (boost::bad_any_cast& e)
// { {
// LOG(WARNING) << "msg_handler_telemetry Bad any cast!"; LOG(WARNING) << "msg_handler_telemetry Bad any cast!";
// rx_message = 0; rx_message = 0;
// } }
//} std::cout << "Received message:" << rx_message << std::endl;
// }
//
//AcqPerfTest_msg_rx::AcqPerfTest_msg_rx() : gr::block("AcqPerfTest_msg_rx", gr::io_signature::make(0, 0, 0), gr::io_signature::make(0, 0, 0))
//{ AcqPerfTest_msg_rx::AcqPerfTest_msg_rx() : gr::block("AcqPerfTest_msg_rx", gr::io_signature::make(0, 0, 0), gr::io_signature::make(0, 0, 0))
// this->message_port_register_in(pmt::mp("events")); {
// this->set_msg_handler(pmt::mp("events"), boost::bind(&AcqPerfTest_msg_rx::msg_handler_events, this, _1)); this->message_port_register_in(pmt::mp("events"));
// rx_message = 0; this->set_msg_handler(pmt::mp("events"), boost::bind(&AcqPerfTest_msg_rx::msg_handler_events, this, _1));
//} rx_message = 0;
// }
//
//AcqPerfTest_msg_rx::~AcqPerfTest_msg_rx()
//{ AcqPerfTest_msg_rx::~AcqPerfTest_msg_rx()
//} {
// }
//// -----------------------------------------
// -----------------------------------------
class AcquisitionPerformanceTest : public ::testing::Test class AcquisitionPerformanceTest : public ::testing::Test
@ -109,8 +110,8 @@ protected:
{ {
} }
std::vector<double> cn0_ = {41.0, 42.0, 43.0}; std::vector<double> cn0_ = {38.0, 40.0, 43.0};
int N_iterations = 2; int N_iterations = 1;
void init(); void init();
//void plot_grid(); //void plot_grid();
@ -118,6 +119,7 @@ protected:
int generate_signal(); int generate_signal();
int configure_receiver(double cn0, unsigned int iter); int configure_receiver(double cn0, unsigned int iter);
int run_receiver(); int run_receiver();
int run_receiver2();
void check_results(); void check_results();
gr::top_block_sptr top_block; gr::top_block_sptr top_block;
Gnss_Synchro gnss_synchro; Gnss_Synchro gnss_synchro;
@ -125,6 +127,7 @@ protected:
unsigned int doppler_max; unsigned int doppler_max;
unsigned int doppler_step; unsigned int doppler_step;
std::string implementation = "GPS_L1_CA_PCPS_Acquisition"; std::string implementation = "GPS_L1_CA_PCPS_Acquisition";
boost::shared_ptr<GpsL1CaPcpsAcquisition> acquisition;
std::shared_ptr<InMemoryConfiguration> config; std::shared_ptr<InMemoryConfiguration> config;
std::shared_ptr<FileConfiguration> config_f; std::shared_ptr<FileConfiguration> config_f;
@ -325,7 +328,7 @@ int AcquisitionPerformanceTest::configure_receiver(double cn0, unsigned int iter
config->set_property("Acquisition_1C.max_dwells", std::to_string(1)); config->set_property("Acquisition_1C.max_dwells", std::to_string(1));
config->set_property("Acquisition_1C.repeat_satellite", "false"); config->set_property("Acquisition_1C.repeat_satellite", "true");
config->set_property("Acquisition_1C.blocking", "true"); config->set_property("Acquisition_1C.blocking", "true");
config->set_property("Acquisition_1C.make_two_steps", "false"); config->set_property("Acquisition_1C.make_two_steps", "false");
@ -355,6 +358,9 @@ int AcquisitionPerformanceTest::configure_receiver(double cn0, unsigned int iter
config->set_property("Tracking_1C.pll_bw_narrow_hz", std::to_string(pll_bw_narrow_hz)); config->set_property("Tracking_1C.pll_bw_narrow_hz", std::to_string(pll_bw_narrow_hz));
config->set_property("Tracking_1C.dll_bw_narrow_hz", std::to_string(dll_bw_narrow_hz)); config->set_property("Tracking_1C.dll_bw_narrow_hz", std::to_string(dll_bw_narrow_hz));
config->set_property("Tracking_1C.extend_correlation_symbols", std::to_string(extend_correlation_ms)); config->set_property("Tracking_1C.extend_correlation_symbols", std::to_string(extend_correlation_ms));
config->set_property("Tracking_1C.cn0_min", std::to_string(50));
config->set_property("Tracking_1C.max_lock_fail", std::to_string(1));
config->set_property("Tracking_1C.cn0_samples", std::to_string(1));
// Set Telemetry // Set Telemetry
config->set_property("TelemetryDecoder_1C.implementation", "GPS_L1_CA_Telemetry_Decoder"); config->set_property("TelemetryDecoder_1C.implementation", "GPS_L1_CA_Telemetry_Decoder");
@ -395,6 +401,58 @@ int AcquisitionPerformanceTest::configure_receiver(double cn0, unsigned int iter
int AcquisitionPerformanceTest::run_receiver() int AcquisitionPerformanceTest::run_receiver()
{
std::chrono::time_point<std::chrono::system_clock> start, end;
std::chrono::duration<double> elapsed_seconds(0);
std::string file = "./" + filename_raw_data; //+ std::to_string(current_cn0_idx);
const char* file_name = file.c_str();
gr::blocks::file_source::sptr file_source = gr::blocks::file_source::make(sizeof(int8_t), file_name, false);
for (unsigned k = 0; k < 2; k++)
{
gr::top_block_sptr top_block_ = gr::make_top_block("Acquisition test");
boost::shared_ptr<AcqPerfTest_msg_rx> msg_rx = AcqPerfTest_msg_rx_make();
gnss_synchro = Gnss_Synchro();
init();
auto acquisition_ = boost::make_shared<GpsL1CaPcpsAcquisition>(config.get(), "Acquisition_1C", 1, 0);
//acquisition->connect(top_block);
acquisition_->set_gnss_synchro(&gnss_synchro);
acquisition_->connect(top_block_);
acquisition_->set_local_code();
acquisition_->set_state(1); // Ensure that acquisition starts at the first sample
acquisition_->init();
//file_source->seek(static_cast<long>(100 * k), SEEK_SET);
if (not file_source->seek(static_cast<long>(100 * k), SEEK_SET))
{
std::cout << "Error skipping " << k << std::endl;
}
gr::blocks::interleaved_char_to_complex::sptr gr_interleaved_char_to_complex = gr::blocks::interleaved_char_to_complex::make();
top_block_->connect(file_source, 0, gr_interleaved_char_to_complex, 0);
top_block_->connect(gr_interleaved_char_to_complex, 0, acquisition_->get_left_block(), 0);
top_block_->msg_connect(acquisition_->get_right_block(), pmt::mp("events"), msg_rx, pmt::mp("events"));
start = std::chrono::system_clock::now();
top_block_->run(); // Start threads and wait
end = std::chrono::system_clock::now();
//file_source->close();
elapsed_seconds = end - start;
std::cout << "Acq_delay_samples: " << gnss_synchro.Acq_delay_samples << std::endl;
std::cout << "Acq_doppler_hz: " << gnss_synchro.Acq_doppler_hz << std::endl;
std::cout << "Acq_samplestamp_samples: " << gnss_synchro.Acq_samplestamp_samples << std::endl
<< std::endl;
}
//std::cout << "Processed " << nsamples << " samples in " << elapsed_seconds.count() * 1e6 << " microseconds" << std::endl;
return 0;
}
int AcquisitionPerformanceTest::run_receiver2()
{ {
std::shared_ptr<ControlThread> control_thread; std::shared_ptr<ControlThread> control_thread;
if (FLAGS_config_file_ptest.empty()) if (FLAGS_config_file_ptest.empty())
@ -442,7 +500,7 @@ TEST_F(AcquisitionPerformanceTest, PdvsCn0)
configure_receiver(*it, iter); configure_receiver(*it, iter);
// Run it // Run it
run_receiver(); run_receiver2();
// Read and store reference data and results // Read and store reference data and results
} }

400
src/tests/unit-tests/signal-processing-blocks/tracking/gps_l1_ca_dll_pll_tracking_test.cc
View File

@ -53,7 +53,27 @@
#include "gnuplot_i.h" #include "gnuplot_i.h"
#include "test_flags.h" #include "test_flags.h"
DEFINE_bool(plot_gps_l1_tracking_test, false, "Plots results of GpsL1CADllPllTrackingTest with gnuplot");
// Input signal configuration
DEFINE_bool(enable_external_signal_file, false, "Use an external signal file capture instead of the software-defined signal generator");
DEFINE_string(signal_file, std::string("gps_l1_capture.dat"), "Path of the external signal capture file");
DEFINE_double(CN0_dBHz_start, std::numeric_limits<double>::infinity(), "Enable noise generator and set the CN0 start sweep value [dB-Hz]");
DEFINE_double(CN0_dBHz_stop, std::numeric_limits<double>::infinity(), "Enable noise generator and set the CN0 stop sweep value [dB-Hz]");
DEFINE_double(CN0_dB_step, 3.0, "Noise generator CN0 sweep step value [dB]");
DEFINE_double(PLL_bw_hz_start, 40.0, "PLL Wide configuration start sweep value [Hz]");
DEFINE_double(PLL_bw_hz_stop, 40.0, "PLL Wide configuration stop sweep value [Hz]");
DEFINE_double(PLL_bw_hz_step, 5.0, "PLL Wide configuration sweep step value [Hz]");
DEFINE_double(DLL_bw_hz_start, 1.5, "DLL Wide configuration start sweep value [Hz]");
DEFINE_double(DLL_bw_hz_stop, 1.5, "DLL Wide configuration stop sweep value [Hz]");
DEFINE_double(DLL_bw_hz_step, 0.25, "DLL Wide configuration sweep step value [Hz]");
DEFINE_bool(plot_extra, false, "Enable or disable plots of the correlators output and constellation diagrams");
//Emulated acquisition configuration
//Tracking configuration
DEFINE_int32(extend_correlation_symbols, 1, "Set the tracking coherent correlation to N symbols (up to 20 for GPS L1 C/A)"); DEFINE_int32(extend_correlation_symbols, 1, "Set the tracking coherent correlation to N symbols (up to 20 for GPS L1 C/A)");
//Test output configuration //Test output configuration
@ -137,15 +157,21 @@ public:
std::vector<double> check_results_doppler(arma::vec& true_time_s, std::vector<double> check_results_doppler(arma::vec& true_time_s,
arma::vec& true_value, arma::vec& true_value,
arma::vec& meas_time_s, arma::vec& meas_time_s,
arma::vec& meas_value); arma::vec& meas_value,
double& mean_error,
double& std_dev_error);
std::vector<double> check_results_acc_carrier_phase(arma::vec& true_time_s, std::vector<double> check_results_acc_carrier_phase(arma::vec& true_time_s,
arma::vec& true_value, arma::vec& true_value,
arma::vec& meas_time_s, arma::vec& meas_time_s,
arma::vec& meas_value); arma::vec& meas_value,
double& mean_error,
double& std_dev_error);
std::vector<double> check_results_codephase(arma::vec& true_time_s, std::vector<double> check_results_codephase(arma::vec& true_time_s,
arma::vec& true_value, arma::vec& true_value,
arma::vec& meas_time_s, arma::vec& meas_time_s,
arma::vec& meas_value); arma::vec& meas_value,
double& mean_error,
double& std_dev_error);
GpsL1CADllPllTrackingTest() GpsL1CADllPllTrackingTest()
{ {
@ -159,7 +185,11 @@ public:
{ {
} }
void configure_receiver(); void configure_receiver(double PLL_wide_bw_hz,
double DLL_wide_bw_hz,
double PLL_narrow_bw_hz,
double DLL_narrow_bw_hz,
int extend_correlation_symbols);
gr::top_block_sptr top_block; gr::top_block_sptr top_block;
std::shared_ptr<GNSSBlockFactory> factory; std::shared_ptr<GNSSBlockFactory> factory;
@ -214,7 +244,12 @@ int GpsL1CADllPllTrackingTest::generate_signal()
} }
void GpsL1CADllPllTrackingTest::configure_receiver() void GpsL1CADllPllTrackingTest::configure_receiver(
double PLL_wide_bw_hz,
double DLL_wide_bw_hz,
double PLL_narrow_bw_hz,
double DLL_narrow_bw_hz,
int extend_correlation_symbols)
{ {
gnss_synchro.Channel_ID = 0; gnss_synchro.Channel_ID = 0;
gnss_synchro.System = 'G'; gnss_synchro.System = 'G';
@ -222,26 +257,40 @@ void GpsL1CADllPllTrackingTest::configure_receiver()
signal.copy(gnss_synchro.Signal, 2, 0); signal.copy(gnss_synchro.Signal, 2, 0);
gnss_synchro.PRN = FLAGS_test_satellite_PRN; gnss_synchro.PRN = FLAGS_test_satellite_PRN;
config = std::make_shared<InMemoryConfiguration>();
config->set_property("GNSS-SDR.internal_fs_sps", std::to_string(baseband_sampling_freq)); config->set_property("GNSS-SDR.internal_fs_sps", std::to_string(baseband_sampling_freq));
// Set Tracking // Set Tracking
config->set_property("Tracking_1C.implementation", implementation); config->set_property("Tracking_1C.implementation", implementation);
config->set_property("Tracking_1C.item_type", "gr_complex"); config->set_property("Tracking_1C.item_type", "gr_complex");
config->set_property("Tracking_1C.pll_bw_hz", "20.0"); config->set_property("Tracking_1C.pll_bw_hz", std::to_string(PLL_wide_bw_hz));
config->set_property("Tracking_1C.dll_bw_hz", "1.5"); config->set_property("Tracking_1C.dll_bw_hz", std::to_string(DLL_wide_bw_hz));
config->set_property("Tracking_1C.early_late_space_chips", "0.5"); config->set_property("Tracking_1C.early_late_space_chips", "0.5");
config->set_property("Tracking_1C.extend_correlation_symbols", std::to_string(FLAGS_extend_correlation_symbols)); config->set_property("Tracking_1C.extend_correlation_symbols", std::to_string(extend_correlation_symbols));
config->set_property("Tracking_1C.pll_bw_narrow_hz", "2.0"); config->set_property("Tracking_1C.pll_bw_narrow_hz", std::to_string(PLL_narrow_bw_hz));
config->set_property("Tracking_1C.dll_bw_narrow_hz", "1.0"); config->set_property("Tracking_1C.dll_bw_narrow_hz", std::to_string(DLL_narrow_bw_hz));
config->set_property("Tracking_1C.early_late_space_narrow_chips", "0.5"); config->set_property("Tracking_1C.early_late_space_narrow_chips", "0.5");
config->set_property("Tracking_1C.dump", "true"); config->set_property("Tracking_1C.dump", "true");
config->set_property("Tracking_1C.dump_filename", "./tracking_ch_"); config->set_property("Tracking_1C.dump_filename", "./tracking_ch_");
std::cout << "*****************************************\n";
std::cout << "*** Tracking configuration parameters ***\n";
std::cout << "*****************************************\n";
std::cout << "pll_bw_hz: " << config->property("Tracking_1C.pll_bw_hz", 0.0) << " Hz\n";
std::cout << "dll_bw_hz: " << config->property("Tracking_1C.dll_bw_hz", 0.0) << " Hz\n";
std::cout << "pll_bw_narrow_hz: " << config->property("Tracking_1C.pll_bw_narrow_hz", 0.0) << " Hz\n";
std::cout << "dll_bw_narrow_hz: " << config->property("Tracking_1C.dll_bw_narrow_hz", 0.0) << " Hz\n";
std::cout << "extend_correlation_symbols: " << config->property("Tracking_1C.extend_correlation_symbols", 0) << " Symbols\n";
std::cout << "*****************************************\n";
std::cout << "*****************************************\n";
} }
std::vector<double> GpsL1CADllPllTrackingTest::check_results_doppler(arma::vec& true_time_s, std::vector<double> GpsL1CADllPllTrackingTest::check_results_doppler(arma::vec& true_time_s,
arma::vec& true_value, arma::vec& true_value,
arma::vec& meas_time_s, arma::vec& meas_time_s,
arma::vec& meas_value) arma::vec& meas_value,
double& mean_error,
double& std_dev_error)
{ {
// 1. True value interpolation to match the measurement times // 1. True value interpolation to match the measurement times
arma::vec true_value_interp; arma::vec true_value_interp;
@ -269,6 +318,9 @@ std::vector<double> GpsL1CADllPllTrackingTest::check_results_doppler(arma::vec&
double error_mean = arma::mean(err); double error_mean = arma::mean(err);
double error_var = arma::var(err); double error_var = arma::var(err);
mean_error = error_mean;
std_dev_error = sqrt(error_var);
// 4. Peaks // 4. Peaks
double max_error = arma::max(err); double max_error = arma::max(err);
double min_error = arma::min(err); double min_error = arma::min(err);
@ -286,7 +338,9 @@ std::vector<double> GpsL1CADllPllTrackingTest::check_results_doppler(arma::vec&
std::vector<double> GpsL1CADllPllTrackingTest::check_results_acc_carrier_phase(arma::vec& true_time_s, std::vector<double> GpsL1CADllPllTrackingTest::check_results_acc_carrier_phase(arma::vec& true_time_s,
arma::vec& true_value, arma::vec& true_value,
arma::vec& meas_time_s, arma::vec& meas_time_s,
arma::vec& meas_value) arma::vec& meas_value,
double& mean_error,
double& std_dev_error)
{ {
// 1. True value interpolation to match the measurement times // 1. True value interpolation to match the measurement times
arma::vec true_value_interp; arma::vec true_value_interp;
@ -312,6 +366,8 @@ std::vector<double> GpsL1CADllPllTrackingTest::check_results_acc_carrier_phase(a
double error_mean = arma::mean(err); double error_mean = arma::mean(err);
double error_var = arma::var(err); double error_var = arma::var(err);
mean_error = error_mean;
std_dev_error = sqrt(error_var);
// 4. Peaks // 4. Peaks
double max_error = arma::max(err); double max_error = arma::max(err);
double min_error = arma::min(err); double min_error = arma::min(err);
@ -329,7 +385,9 @@ std::vector<double> GpsL1CADllPllTrackingTest::check_results_acc_carrier_phase(a
std::vector<double> GpsL1CADllPllTrackingTest::check_results_codephase(arma::vec& true_time_s, std::vector<double> GpsL1CADllPllTrackingTest::check_results_codephase(arma::vec& true_time_s,
arma::vec& true_value, arma::vec& true_value,
arma::vec& meas_time_s, arma::vec& meas_time_s,
arma::vec& meas_value) arma::vec& meas_value,
double& mean_error,
double& std_dev_error)
{ {
// 1. True value interpolation to match the measurement times // 1. True value interpolation to match the measurement times
arma::vec true_value_interp; arma::vec true_value_interp;
@ -356,6 +414,9 @@ std::vector<double> GpsL1CADllPllTrackingTest::check_results_codephase(arma::vec
double error_mean = arma::mean(err); double error_mean = arma::mean(err);
double error_var = arma::var(err); double error_var = arma::var(err);
mean_error = error_mean;
std_dev_error = sqrt(error_var);
// 4. Peaks // 4. Peaks
double max_error = arma::max(err); double max_error = arma::max(err);
double min_error = arma::min(err); double min_error = arma::min(err);
@ -378,18 +439,18 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
std::vector<double> generator_CN0_values; std::vector<double> generator_CN0_values;
std::vector<std::vector<double>> prompt_sweep;
std::vector<std::vector<double>> early_sweep;
std::vector<std::vector<double>> late_sweep;
std::vector<std::vector<double>> promptI_sweep;
std::vector<std::vector<double>> promptQ_sweep;
std::vector<std::vector<double>> CN0_dBHz_sweep;
//error vectors //data containers for config param sweep
std::vector<std::vector<double>> doppler_error_sweep; std::vector<std::vector<double>> mean_doppler_error_sweep; //swep config param and cn0 sweep
std::vector<std::vector<double>> code_phase_error_sweep; std::vector<std::vector<double>> std_dev_doppler_error_sweep; //swep config param and cn0 sweep
std::vector<std::vector<double>> acc_carrier_phase_error_sweep;
std::vector<std::vector<double>> trk_timestamp_s_sweep; std::vector<std::vector<double>> mean_code_phase_error_sweep; //swep config param and cn0 sweep
std::vector<std::vector<double>> std_dev_code_phase_error_sweep; //swep config param and cn0 sweep
std::vector<std::vector<double>> mean_carrier_phase_error_sweep; //swep config param and cn0 sweep
std::vector<std::vector<double>> std_dev_carrier_phase_error_sweep; //swep config param and cn0 sweep
std::vector<std::vector<double>> trk_valid_timestamp_s_sweep;
if (FLAGS_CN0_dBHz_start == FLAGS_CN0_dBHz_stop) if (FLAGS_CN0_dBHz_start == FLAGS_CN0_dBHz_stop)
{ {
@ -433,8 +494,67 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
} }
//CN0 LOOP // CONFIG PARAM SWEEP LOOP
std::vector<double> PLL_wide_bw_values;
std::vector<double> DLL_wide_bw_values;
if (FLAGS_PLL_bw_hz_start == FLAGS_PLL_bw_hz_stop)
{
if (FLAGS_DLL_bw_hz_start == FLAGS_DLL_bw_hz_stop)
{
//NO PLL/DLL BW sweep
PLL_wide_bw_values.push_back(FLAGS_PLL_bw_hz_start);
DLL_wide_bw_values.push_back(FLAGS_DLL_bw_hz_start);
}
else
{
//DLL BW Sweep
for (double dll_bw = FLAGS_DLL_bw_hz_start; dll_bw > FLAGS_DLL_bw_hz_stop; dll_bw = dll_bw - FLAGS_DLL_bw_hz_step)
{
PLL_wide_bw_values.push_back(FLAGS_PLL_bw_hz_start);
DLL_wide_bw_values.push_back(dll_bw);
}
}
}
else
{
//PLL BW Sweep
for (double pll_bw = FLAGS_PLL_bw_hz_start; pll_bw > FLAGS_PLL_bw_hz_stop; pll_bw = pll_bw - FLAGS_PLL_bw_hz_step)
{
PLL_wide_bw_values.push_back(pll_bw);
DLL_wide_bw_values.push_back(FLAGS_DLL_bw_hz_start);
}
}
for (int config_idx = 0; config_idx < PLL_wide_bw_values.size(); config_idx++)
{
//CN0 LOOP
// data containers for CN0 sweep
std::vector<std::vector<double>> prompt_sweep;
std::vector<std::vector<double>> early_sweep;
std::vector<std::vector<double>> late_sweep;
std::vector<std::vector<double>> promptI_sweep;
std::vector<std::vector<double>> promptQ_sweep;
std::vector<std::vector<double>> CN0_dBHz_sweep;
std::vector<std::vector<double>> trk_timestamp_s_sweep;
std::vector<std::vector<double>> doppler_error_sweep;
std::vector<std::vector<double>> code_phase_error_sweep;
std::vector<std::vector<double>> acc_carrier_phase_error_sweep;
std::vector<double> mean_doppler_error;
std::vector<double> std_dev_doppler_error;
std::vector<double> mean_code_phase_error;
std::vector<double> std_dev_code_phase_error;
std::vector<double> mean_carrier_phase_error;
std::vector<double> std_dev_carrier_phase_error;
configure_receiver(PLL_wide_bw_values.at(config_idx),
DLL_wide_bw_values.at(config_idx),
2.0,
1.0,
FLAGS_extend_correlation_symbols);
for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++) for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++)
{ {
//****************************************************************************************** //******************************************************************************************
@ -465,7 +585,6 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
//***** STEP 4: Configure the signal tracking parameters ***** //***** STEP 4: Configure the signal tracking parameters *****
//************************************************************ //************************************************************
std::chrono::time_point<std::chrono::system_clock> start, end; std::chrono::time_point<std::chrono::system_clock> start, end;
configure_receiver();
top_block = gr::make_top_block("Tracking test"); top_block = gr::make_top_block("Tracking test");
@ -533,6 +652,7 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
long int epoch_counter = 0; long int epoch_counter = 0;
std::vector<double> timestamp_s;
std::vector<double> prompt; std::vector<double> prompt;
std::vector<double> early; std::vector<double> early;
std::vector<double> late; std::vector<double> late;
@ -547,17 +667,18 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
double delay_chips = GPS_L1_CA_CODE_LENGTH_CHIPS - GPS_L1_CA_CODE_LENGTH_CHIPS * (fmod((static_cast<double>(trk_dump.PRN_start_sample_count) + trk_dump.aux1) / static_cast<double>(baseband_sampling_freq), 1.0e-3) / 1.0e-3); double delay_chips = GPS_L1_CA_CODE_LENGTH_CHIPS - GPS_L1_CA_CODE_LENGTH_CHIPS * (fmod((static_cast<double>(trk_dump.PRN_start_sample_count) + trk_dump.aux1) / static_cast<double>(baseband_sampling_freq), 1.0e-3) / 1.0e-3);
trk_prn_delay_chips(epoch_counter) = delay_chips; trk_prn_delay_chips(epoch_counter) = delay_chips;
epoch_counter++;
timestamp_s.push_back(trk_timestamp_s(epoch_counter));
prompt.push_back(trk_dump.abs_P); prompt.push_back(trk_dump.abs_P);
early.push_back(trk_dump.abs_E); early.push_back(trk_dump.abs_E);
late.push_back(trk_dump.abs_L); late.push_back(trk_dump.abs_L);
promptI.push_back(trk_dump.prompt_I); promptI.push_back(trk_dump.prompt_I);
promptQ.push_back(trk_dump.prompt_Q); promptQ.push_back(trk_dump.prompt_Q);
CN0_dBHz.push_back(trk_dump.CN0_SNV_dB_Hz); CN0_dBHz.push_back(trk_dump.CN0_SNV_dB_Hz);
}
epoch_counter++;
}
trk_timestamp_s_sweep.push_back(timestamp_s);
prompt_sweep.push_back(prompt); prompt_sweep.push_back(prompt);
early_sweep.push_back(early); early_sweep.push_back(early);
late_sweep.push_back(late); late_sweep.push_back(late);
@ -569,6 +690,11 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
//***** STEP 6: Compare with true values (if available) ***** //***** STEP 6: Compare with true values (if available) *****
//*********************************************************** //***********************************************************
if (!FLAGS_enable_external_signal_file) if (!FLAGS_enable_external_signal_file)
{
std::vector<double> doppler_error_hz;
std::vector<double> code_phase_error_chips;
std::vector<double> acc_carrier_phase_hz;
try
{ {
// load the true values // load the true values
long int n_true_epochs = true_obs_data.num_epochs(); long int n_true_epochs = true_obs_data.num_epochs();
@ -592,6 +718,7 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
} }
// Align initial measurements and cut the tracking pull-in transitory // Align initial measurements and cut the tracking pull-in transitory
double pull_in_offset_s = 1.0; double pull_in_offset_s = 1.0;
arma::uvec initial_meas_point = arma::find(trk_timestamp_s >= (true_timestamp_s(0) + pull_in_offset_s), 1, "first"); arma::uvec initial_meas_point = arma::find(trk_timestamp_s >= (true_timestamp_s(0) + pull_in_offset_s), 1, "first");
trk_timestamp_s = trk_timestamp_s.subvec(initial_meas_point(0), trk_timestamp_s.size() - 1); trk_timestamp_s = trk_timestamp_s.subvec(initial_meas_point(0), trk_timestamp_s.size() - 1);
@ -599,23 +726,55 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
trk_Doppler_Hz = trk_Doppler_Hz.subvec(initial_meas_point(0), trk_Doppler_Hz.size() - 1); trk_Doppler_Hz = trk_Doppler_Hz.subvec(initial_meas_point(0), trk_Doppler_Hz.size() - 1);
trk_prn_delay_chips = trk_prn_delay_chips.subvec(initial_meas_point(0), trk_prn_delay_chips.size() - 1); trk_prn_delay_chips = trk_prn_delay_chips.subvec(initial_meas_point(0), trk_prn_delay_chips.size() - 1);
std::vector<double> doppler_error_hz;
std::vector<double> code_phase_error_chips; double mean_error;
std::vector<double> acc_carrier_phase_hz; double std_dev_error;
doppler_error_hz = check_results_doppler(true_timestamp_s, true_Doppler_Hz, trk_timestamp_s, trk_Doppler_Hz);
code_phase_error_chips = check_results_codephase(true_timestamp_s, true_prn_delay_chips, trk_timestamp_s, trk_prn_delay_chips); doppler_error_hz = check_results_doppler(true_timestamp_s, true_Doppler_Hz, trk_timestamp_s, trk_Doppler_Hz, mean_error, std_dev_error);
acc_carrier_phase_hz = check_results_acc_carrier_phase(true_timestamp_s, true_acc_carrier_phase_cycles, trk_timestamp_s, trk_acc_carrier_phase_cycles); mean_doppler_error.push_back(mean_error);
std_dev_doppler_error.push_back(std_dev_error);
code_phase_error_chips = check_results_codephase(true_timestamp_s, true_prn_delay_chips, trk_timestamp_s, trk_prn_delay_chips, mean_error, std_dev_error);
mean_code_phase_error.push_back(mean_error);
std_dev_code_phase_error.push_back(std_dev_error);
acc_carrier_phase_hz = check_results_acc_carrier_phase(true_timestamp_s, true_acc_carrier_phase_cycles, trk_timestamp_s, trk_acc_carrier_phase_cycles, mean_error, std_dev_error);
mean_carrier_phase_error.push_back(mean_error);
std_dev_carrier_phase_error.push_back(std_dev_error);
//save tracking measurement timestamps to std::vector //save tracking measurement timestamps to std::vector
std::vector<double> vector_trk_timestamp_s(trk_timestamp_s.colptr(0), trk_timestamp_s.colptr(0) + trk_timestamp_s.n_rows); std::vector<double> vector_trk_timestamp_s(trk_timestamp_s.colptr(0), trk_timestamp_s.colptr(0) + trk_timestamp_s.n_rows);
trk_timestamp_s_sweep.push_back(vector_trk_timestamp_s); trk_valid_timestamp_s_sweep.push_back(vector_trk_timestamp_s);
doppler_error_sweep.push_back(doppler_error_hz); doppler_error_sweep.push_back(doppler_error_hz);
code_phase_error_sweep.push_back(code_phase_error_chips); code_phase_error_sweep.push_back(code_phase_error_chips);
acc_carrier_phase_error_sweep.push_back(acc_carrier_phase_hz); acc_carrier_phase_error_sweep.push_back(acc_carrier_phase_hz);
} }
catch (const std::exception& ex)
{
std::cout << "Tracking output could not be used, possible loss of lock " << ex.what() << std::endl;
std::vector<double> vector_trk_timestamp_s;
trk_valid_timestamp_s_sweep.push_back(vector_trk_timestamp_s);
doppler_error_sweep.push_back(doppler_error_hz);
code_phase_error_sweep.push_back(code_phase_error_chips);
acc_carrier_phase_error_sweep.push_back(acc_carrier_phase_hz);
}
}
} //CN0 LOOP } //CN0 LOOP
if (!FLAGS_enable_external_signal_file)
{
mean_doppler_error_sweep.push_back(mean_doppler_error);
std_dev_doppler_error_sweep.push_back(std_dev_doppler_error);
mean_code_phase_error_sweep.push_back(mean_code_phase_error);
std_dev_code_phase_error_sweep.push_back(std_dev_code_phase_error);
mean_carrier_phase_error_sweep.push_back(mean_carrier_phase_error);
std_dev_carrier_phase_error_sweep.push_back(std_dev_carrier_phase_error);
}
std::cout << "A\n\n\n";
//******************************** //********************************
//***** STEP 7: Plot results ***** //***** STEP 7: Plot results *****
//******************************** //********************************
@ -636,75 +795,87 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
boost::filesystem::path dir = p.parent_path(); boost::filesystem::path dir = p.parent_path();
std::string gnuplot_path = dir.native(); std::string gnuplot_path = dir.native();
Gnuplot::set_GNUPlotPath(gnuplot_path); Gnuplot::set_GNUPlotPath(gnuplot_path);
std::vector<double> timevec;
unsigned int decimate = static_cast<unsigned int>(FLAGS_plot_decimate); unsigned int decimate = static_cast<unsigned int>(FLAGS_plot_decimate);
if (FLAGS_plot_extra)
{
for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++) for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++)
{ {
timevec.clear();
//todo: timevector MUST BE READED from the trk output file
double t = 0.0;
for (auto it = prompt_sweep.at(current_cn0_idx).begin(); it != prompt_sweep.at(current_cn0_idx).end(); it++)
{
timevec.push_back(t);
t = t + GPS_L1_CA_CODE_PERIOD;
}
Gnuplot g1("linespoints"); Gnuplot g1("linespoints");
g1.set_title("[" + std::to_string(generator_CN0_values.at(current_cn0_idx)) + " dB-Hz ] GPS L1 C/A signal tracking correlators' output (satellite PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); g1.showonscreen(); // window output
g1.set_title(std::to_string(generator_CN0_values.at(current_cn0_idx)) + " dB-Hz, " + "PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_idx)) + "," + std::to_string(DLL_wide_bw_values.at(config_idx)) + " Hz" + "GPS L1 C/A (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g1.set_grid(); g1.set_grid();
g1.set_xlabel("Time [s]"); g1.set_xlabel("Time [s]");
g1.set_ylabel("Correlators' output"); g1.set_ylabel("Correlators' output");
g1.cmd("set key box opaque"); //g1.cmd("set key box opaque");
g1.plot_xy(timevec, prompt_sweep.at(current_cn0_idx), "Prompt", decimate); g1.plot_xy(trk_timestamp_s_sweep.at(current_cn0_idx), prompt_sweep.at(current_cn0_idx), "Prompt", decimate);
g1.plot_xy(timevec, early_sweep.at(current_cn0_idx), "Early", decimate); g1.plot_xy(trk_timestamp_s_sweep.at(current_cn0_idx), early_sweep.at(current_cn0_idx), "Early", decimate);
g1.plot_xy(timevec, late_sweep.at(current_cn0_idx), "Late", decimate); g1.plot_xy(trk_timestamp_s_sweep.at(current_cn0_idx), late_sweep.at(current_cn0_idx), "Late", decimate);
g1.savetops("Correlators_outputs"); g1.set_legend();
g1.savetopdf("Correlators_outputs", 18); g1.savetops("Correlators_outputs" + std::to_string(generator_CN0_values.at(current_cn0_idx)));
g1.showonscreen(); // window output g1.savetopdf("Correlators_outputs" + std::to_string(generator_CN0_values.at(current_cn0_idx)), 18);
}
Gnuplot g2("points"); Gnuplot g2("points");
g2.set_title("[" + std::to_string(generator_CN0_values.at(current_cn0_idx)) + " dB-Hz ] Constellation diagram (satellite PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); g2.showonscreen(); // window output
g2.set_multiplot(ceil(static_cast<float>(generator_CN0_values.size()) / 2.0),
ceil(static_cast<float>(generator_CN0_values.size()) / 2));
for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++)
{
g2.reset_plot();
g2.set_title(std::to_string(generator_CN0_values.at(current_cn0_idx)) + " dB-Hz Constellation " + "PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_idx)) + "," + std::to_string(DLL_wide_bw_values.at(config_idx)) + " Hz" + "GPS L1 C/A (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g2.set_grid(); g2.set_grid();
g2.set_xlabel("Inphase"); g2.set_xlabel("Inphase");
g2.set_ylabel("Quadrature"); g2.set_ylabel("Quadrature");
g2.cmd("set size ratio -1"); //g2.cmd("set size ratio -1");
g2.plot_xy(promptI_sweep.at(current_cn0_idx), promptQ_sweep.at(current_cn0_idx)); g2.plot_xy(promptI_sweep.at(current_cn0_idx), promptQ_sweep.at(current_cn0_idx));
}
g2.unset_multiplot();
g2.savetops("Constellation"); g2.savetops("Constellation");
g2.savetopdf("Constellation", 18); g2.savetopdf("Constellation", 18);
g2.showonscreen(); // window output
}
Gnuplot g3("linespoints"); Gnuplot g3("linespoints");
g3.set_title("GPS L1 C/A tracking CN0 output (satellite PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); g3.set_title("GPS L1 C/A tracking CN0 output (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g3.set_grid(); g3.set_grid();
g3.set_xlabel("Time [s]"); g3.set_xlabel("Time [s]");
g3.set_ylabel("Reported CN0 [dB-Hz]"); g3.set_ylabel("Reported CN0 [dB-Hz]");
g3.cmd("set key box opaque"); g3.cmd("set key box opaque");
for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++) for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++)
{ {
g3.plot_xy(timevec, CN0_dBHz_sweep.at(current_cn0_idx), g3.plot_xy(trk_timestamp_s_sweep.at(current_cn0_idx), CN0_dBHz_sweep.at(current_cn0_idx),
std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate); std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate);
} }
g3.set_legend(); g3.set_legend();
g3.savetops("CN0_output"); g3.savetops("CN0_output");
g3.savetopdf("CN0_output", 18); g3.savetopdf("CN0_output", 18);
g3.showonscreen(); // window output g3.showonscreen(); // window output
}
std::cout << "B\n\n\n";
//PLOT ERROR FIGURES (only if it is used the signal generator)
if (!FLAGS_enable_external_signal_file)
{
Gnuplot g4("points"); Gnuplot g4("points");
g4.set_title("Doppler error (satellite PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); g4.showonscreen(); // window output
g4.set_grid(); g4.set_multiplot(ceil(static_cast<float>(generator_CN0_values.size()) / 2.0),
g4.set_xlabel("Time [s]"); ceil(static_cast<float>(generator_CN0_values.size()) / 2));
g4.set_ylabel("Dopper error [Hz]");
g4.cmd("set key box opaque");
for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++) for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++)
{ {
g4.plot_xy(trk_timestamp_s_sweep.at(current_cn0_idx), doppler_error_sweep.at(current_cn0_idx), g4.reset_plot();
g4.set_title(std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz] Doppler error " + "PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_idx)) + "," + std::to_string(DLL_wide_bw_values.at(config_idx)) + " Hz (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g4.set_grid();
//g4.cmd("set key box opaque");
g4.set_xlabel("Time [s]");
g4.set_ylabel("Dopper error [Hz]");
g4.plot_xy(trk_valid_timestamp_s_sweep.at(current_cn0_idx), doppler_error_sweep.at(current_cn0_idx),
std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate); std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate);
//g4.set_legend();
} }
g4.set_legend(); g4.unset_multiplot();
g4.savetops("Doppler_error_output"); g4.savetops("Doppler_error_output");
g4.savetopdf("Doppler_error_output", 18); g4.savetopdf("Doppler_error_output", 18);
g4.showonscreen(); // window output
Gnuplot g5("points"); Gnuplot g5("points");
g5.set_title("Code delay error (satellite PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); g5.set_title("Code delay error, PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_idx)) + "," + std::to_string(DLL_wide_bw_values.at(config_idx)) + " Hz (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g5.set_grid(); g5.set_grid();
g5.set_xlabel("Time [s]"); g5.set_xlabel("Time [s]");
g5.set_ylabel("Code delay error [Chips]"); g5.set_ylabel("Code delay error [Chips]");
@ -712,7 +883,7 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++) for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++)
{ {
g5.plot_xy(trk_timestamp_s_sweep.at(current_cn0_idx), code_phase_error_sweep.at(current_cn0_idx), g5.plot_xy(trk_valid_timestamp_s_sweep.at(current_cn0_idx), code_phase_error_sweep.at(current_cn0_idx),
std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate); std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate);
} }
g5.set_legend(); g5.set_legend();
@ -721,7 +892,7 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
g5.showonscreen(); // window output g5.showonscreen(); // window output
Gnuplot g6("points"); Gnuplot g6("points");
g6.set_title("Accumulated carrier phase error (satellite PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); g6.set_title("Accumulated carrier phase error, PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_idx)) + "," + std::to_string(DLL_wide_bw_values.at(config_idx)) + " Hz (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g6.set_grid(); g6.set_grid();
g6.set_xlabel("Time [s]"); g6.set_xlabel("Time [s]");
g6.set_ylabel("Accumulated carrier phase error [Cycles]"); g6.set_ylabel("Accumulated carrier phase error [Cycles]");
@ -729,7 +900,7 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++) for (int current_cn0_idx = 0; current_cn0_idx < generator_CN0_values.size(); current_cn0_idx++)
{ {
g6.plot_xy(trk_timestamp_s_sweep.at(current_cn0_idx), acc_carrier_phase_error_sweep.at(current_cn0_idx), g6.plot_xy(trk_valid_timestamp_s_sweep.at(current_cn0_idx), acc_carrier_phase_error_sweep.at(current_cn0_idx),
std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate); std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]", decimate);
} }
g6.set_legend(); g6.set_legend();
@ -737,6 +908,91 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
g6.savetopdf("Carrier_phase_error_output", 18); g6.savetopdf("Carrier_phase_error_output", 18);
g6.showonscreen(); // window output g6.showonscreen(); // window output
} }
}
catch (const GnuplotException& ge)
{
std::cout << ge.what() << std::endl;
}
}
}
}
if (FLAGS_plot_gps_l1_tracking_test == true)
{
const std::string gnuplot_executable(FLAGS_gnuplot_executable);
if (gnuplot_executable.empty())
{
std::cout << "WARNING: Although the flag plot_gps_l1_tracking_test has been set to TRUE," << std::endl;
std::cout << "gnuplot has not been found in your system." << std::endl;
std::cout << "Test results will not be plotted." << std::endl;
}
else
{
try
{
if (generator_CN0_values.size() > 1)
{
//plot metrics
Gnuplot g7("linespoints");
g7.set_title("Doppler error metrics (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g7.set_grid();
g7.set_xlabel("CN0 [dB-Hz]");
g7.set_ylabel("Doppler error [Hz]");
g7.set_pointsize(2);
g7.cmd("set termoption lw 2");
g7.cmd("set key box opaque");
for (int config_sweep_idx = 0; config_sweep_idx < mean_doppler_error_sweep.size(); config_sweep_idx++)
{
g7.plot_xy_err(generator_CN0_values,
mean_doppler_error_sweep.at(config_sweep_idx),
std_dev_doppler_error_sweep.at(config_sweep_idx),
"PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_sweep_idx)) +
+"," + std::to_string(DLL_wide_bw_values.at(config_sweep_idx)) + " Hz");
}
g7.savetops("Doppler_error_metrics");
g7.savetopdf("Doppler_error_metrics", 18);
Gnuplot g8("linespoints");
g8.set_title("Accumulated carrier phase error metrics (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g8.set_grid();
g8.set_xlabel("CN0 [dB-Hz]");
g8.set_ylabel("Accumulated Carrier Phase error [Cycles]");
g8.cmd("set key box opaque");
g8.cmd("set termoption lw 2");
g8.set_pointsize(2);
for (int config_sweep_idx = 0; config_sweep_idx < mean_doppler_error_sweep.size(); config_sweep_idx++)
{
g8.plot_xy_err(generator_CN0_values,
mean_carrier_phase_error_sweep.at(config_sweep_idx),
std_dev_carrier_phase_error_sweep.at(config_sweep_idx),
"PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_sweep_idx)) +
+"," + std::to_string(DLL_wide_bw_values.at(config_sweep_idx)) + " Hz");
}
g8.savetops("Carrier_error_metrics");
g8.savetopdf("Carrier_error_metrics", 18);
Gnuplot g9("linespoints");
g9.set_title("Code Phase error metrics (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g9.set_grid();
g9.set_xlabel("CN0 [dB-Hz]");
g9.set_ylabel("Code Phase error [Chips]");
g9.cmd("set key box opaque");
g9.cmd("set termoption lw 2");
g9.set_pointsize(2);
for (int config_sweep_idx = 0; config_sweep_idx < mean_doppler_error_sweep.size(); config_sweep_idx++)
{
g9.plot_xy_err(generator_CN0_values,
mean_code_phase_error_sweep.at(config_sweep_idx),
std_dev_code_phase_error_sweep.at(config_sweep_idx),
"PLL/DLL BW: " + std::to_string(PLL_wide_bw_values.at(config_sweep_idx)) +
+"," + std::to_string(DLL_wide_bw_values.at(config_sweep_idx)) + " Hz");
}
g9.savetops("Code_error_metrics");
g9.savetopdf("Code_error_metrics", 18);
}
}
catch (const GnuplotException& ge) catch (const GnuplotException& ge)
{ {
std::cout << ge.what() << std::endl; std::cout << ge.what() << std::endl;