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Improving gnuplot and adding DLL/PLL bandwidth sweep options to DLL/PLL unit test

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This commit is contained in:
Javier Arribas 2018-06-20 18:42:06 +02:00
parent 306f8103d2
commit 6bb284b9bb
2 changed files with 495 additions and 340 deletions
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2
src/tests/common-files/gnuplot_i.h
View File

@ -69,7 +69,7 @@
#elif defined(unix) || defined(__unix) || defined(__unix__) || defined(__APPLE__) #elif defined(unix) || defined(__unix) || defined(__unix__) || defined(__APPLE__)
//all UNIX-like OSs (Linux, *BSD, MacOSX, Solaris, ...) //all UNIX-like OSs (Linux, *BSD, MacOSX, Solaris, ...)
#include <unistd.h> // for access(), mkstemp() #include <unistd.h> // for access(), mkstemp()
#define GP_MAX_TMP_FILES 64 #define GP_MAX_TMP_FILES 1024
#else #else
#error unsupported or unknown operating system #error unsupported or unknown operating system
#endif #endif

307
src/tests/unit-tests/signal-processing-blocks/tracking/gps_l1_ca_dll_pll_tracking_test.cc
View File

@ -61,6 +61,15 @@ DEFINE_double(CN0_dBHz_start, std::numeric_limits<double>::infinity(), "Enable n
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_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(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 //Emulated acquisition configuration
@ -176,7 +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;
@ -231,7 +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';
@ -239,19 +257,31 @@ 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";
} }
@ -409,26 +439,16 @@ 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;
std::vector<std::vector<double>> trk_timestamp_s_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<double> mean_doppler_error_sweep; std::vector<std::vector<double>> std_dev_doppler_error_sweep; //swep config param and cn0 sweep
std::vector<double> std_dev_doppler_error_sweep;
std::vector<std::vector<double>> code_phase_error_sweep; std::vector<std::vector<double>> mean_code_phase_error_sweep; //swep config param and cn0 sweep
std::vector<double> mean_code_phase_error_sweep; std::vector<std::vector<double>> std_dev_code_phase_error_sweep; //swep config param and cn0 sweep
std::vector<double> std_dev_code_phase_error_sweep;
std::vector<std::vector<double>> acc_carrier_phase_error_sweep; std::vector<std::vector<double>> mean_carrier_phase_error_sweep; //swep config param and cn0 sweep
std::vector<double> mean_carrier_phase_error_sweep; std::vector<std::vector<double>> std_dev_carrier_phase_error_sweep; //swep config param and cn0 sweep
std::vector<double> std_dev_carrier_phase_error_sweep;
std::vector<std::vector<double>> trk_valid_timestamp_s_sweep; std::vector<std::vector<double>> trk_valid_timestamp_s_sweep;
@ -474,8 +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++)
{ {
//****************************************************************************************** //******************************************************************************************
@ -506,7 +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");
@ -612,6 +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();
@ -635,6 +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);
@ -642,24 +726,21 @@ 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;
std::vector<double> acc_carrier_phase_hz;
double mean_error; double mean_error;
double std_dev_error; double std_dev_error;
doppler_error_hz = check_results_doppler(true_timestamp_s, true_Doppler_Hz, trk_timestamp_s, trk_Doppler_Hz, mean_error, std_dev_error); doppler_error_hz = check_results_doppler(true_timestamp_s, true_Doppler_Hz, trk_timestamp_s, trk_Doppler_Hz, mean_error, std_dev_error);
mean_doppler_error_sweep.push_back(mean_error); mean_doppler_error.push_back(mean_error);
std_dev_doppler_error_sweep.push_back(std_dev_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); 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_sweep.push_back(mean_error); mean_code_phase_error.push_back(mean_error);
std_dev_code_phase_error_sweep.push_back(std_dev_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); 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_sweep.push_back(mean_error); mean_carrier_phase_error.push_back(mean_error);
std_dev_carrier_phase_error_sweep.push_back(std_dev_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);
@ -669,9 +750,31 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
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 *****
//******************************** //********************************
@ -694,11 +797,13 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
Gnuplot::set_GNUPlotPath(gnuplot_path); Gnuplot::set_GNUPlotPath(gnuplot_path);
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++)
{ {
Gnuplot g1("linespoints"); Gnuplot g1("linespoints");
g1.showonscreen(); // window output g1.showonscreen(); // window output
g1.set_title(std::to_string(generator_CN0_values.at(current_cn0_idx)) + " dB-Hz GPS L1 C/A (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); 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");
@ -710,8 +815,6 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
g1.savetops("Correlators_outputs" + std::to_string(generator_CN0_values.at(current_cn0_idx))); g1.savetops("Correlators_outputs" + std::to_string(generator_CN0_values.at(current_cn0_idx)));
g1.savetopdf("Correlators_outputs" + std::to_string(generator_CN0_values.at(current_cn0_idx)), 18); g1.savetopdf("Correlators_outputs" + std::to_string(generator_CN0_values.at(current_cn0_idx)), 18);
} }
Gnuplot g2("points"); Gnuplot g2("points");
g2.showonscreen(); // window output g2.showonscreen(); // window output
g2.set_multiplot(ceil(static_cast<float>(generator_CN0_values.size()) / 2.0), g2.set_multiplot(ceil(static_cast<float>(generator_CN0_values.size()) / 2.0),
@ -719,7 +822,7 @@ 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++)
{ {
g2.reset_plot(); g2.reset_plot();
g2.set_title(std::to_string(generator_CN0_values.at(current_cn0_idx)) + " dB-Hz Constellation (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); 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");
@ -745,7 +848,9 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
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) //PLOT ERROR FIGURES (only if it is used the signal generator)
if (!FLAGS_enable_external_signal_file) if (!FLAGS_enable_external_signal_file)
{ {
@ -756,7 +861,7 @@ 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++)
{ {
g4.reset_plot(); g4.reset_plot();
g4.set_title(std::to_string(static_cast<int>(round(generator_CN0_values.at(current_cn0_idx)))) + "[dB-Hz]" + " Doppler error (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); 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.set_grid();
//g4.cmd("set key box opaque"); //g4.cmd("set key box opaque");
g4.set_xlabel("Time [s]"); g4.set_xlabel("Time [s]");
@ -770,7 +875,7 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
g4.savetopdf("Doppler_error_output", 18); g4.savetopdf("Doppler_error_output", 18);
Gnuplot g5("points"); Gnuplot g5("points");
g5.set_title("Code delay error (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]");
@ -787,7 +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 (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]");
@ -802,40 +907,90 @@ TEST_F(GpsL1CADllPllTrackingTest, ValidationOfResults)
g6.savetops("Carrier_phase_error_output"); g6.savetops("Carrier_phase_error_output");
g6.savetopdf("Carrier_phase_error_output", 18); g6.savetopdf("Carrier_phase_error_output", 18);
g6.showonscreen(); // window output g6.showonscreen(); // window output
}
if (generator_CN0_values.size() > 1) }
{ catch (const GnuplotException& ge)
//plot metrics {
Gnuplot g7("linespoints"); std::cout << ge.what() << std::endl;
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.cmd("set key box opaque");
g7.plot_xy_err(generator_CN0_values, mean_doppler_error_sweep, std_dev_doppler_error_sweep, "Doppler error");
g7.savetops("Doppler_error_metrics"); if (FLAGS_plot_gps_l1_tracking_test == true)
g7.savetopdf("Doppler_error_metrics", 18); {
const std::string gnuplot_executable(FLAGS_gnuplot_executable);
Gnuplot g8("linespoints"); if (gnuplot_executable.empty())
g8.set_title("Accumulated carrier phase error metrics (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); {
g8.set_grid(); std::cout << "WARNING: Although the flag plot_gps_l1_tracking_test has been set to TRUE," << std::endl;
g8.set_xlabel("CN0 [dB-Hz]"); std::cout << "gnuplot has not been found in your system." << std::endl;
g8.set_ylabel("Accumulated Carrier Phase error [Hz]"); std::cout << "Test results will not be plotted." << std::endl;
g8.cmd("set key box opaque"); }
g8.plot_xy_err(generator_CN0_values, mean_carrier_phase_error_sweep, std_dev_carrier_phase_error_sweep, "Carrier Phase error"); else
g8.savetops("Carrier_error_metrics"); {
g8.savetopdf("Carrier_error_metrics", 18); try
{
Gnuplot g9("linespoints"); if (generator_CN0_values.size() > 1)
g9.set_title("Code Phase error metrics (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")"); {
g9.set_grid(); //plot metrics
g9.set_xlabel("CN0 [dB-Hz]");
g9.set_ylabel("Code Phase error [Hz]"); Gnuplot g7("linespoints");
g9.cmd("set key box opaque"); g7.set_title("Doppler error metrics (PRN #" + std::to_string(FLAGS_test_satellite_PRN) + ")");
g9.plot_xy_err(generator_CN0_values, mean_code_phase_error_sweep, std_dev_code_phase_error_sweep, "Code Phase error"); g7.set_grid();
g9.savetops("Code_error_metrics"); g7.set_xlabel("CN0 [dB-Hz]");
g9.savetopdf("Code_error_metrics", 18); 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)