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Fix Gal E1 primary code generation

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This commit is contained in:
Antonio Ramos 2018-03-16 12:21:13 +01:00
parent bdce8b6a66
commit a7737d55da
5 changed files with 123 additions and 63 deletions
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22
src/algorithms/libs/galileo_e1_signal_processing.cc
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@ -53,7 +53,7 @@ void galileo_e1_code_gen_int(int* _dest, char _Signal[3], signed int _prn)
for (size_t i = 0; i < Galileo_E1_B_PRIMARY_CODE[prn].length(); i++)
{
hex_to_binary_converter(&_dest[index], Galileo_E1_B_PRIMARY_CODE[prn].at(i));
index = index + 4;
index += 4;
}
}
else if (_galileo_signal.rfind("1C") != std::string::npos && _galileo_signal.length() >= 2)
@ -61,13 +61,9 @@ void galileo_e1_code_gen_int(int* _dest, char _Signal[3], signed int _prn)
for (size_t i = 0; i < Galileo_E1_C_PRIMARY_CODE[prn].length(); i++)
{
hex_to_binary_converter(&_dest[index], Galileo_E1_C_PRIMARY_CODE[prn].at(i));
index = index + 4;
index += 4;
}
}
else
{
return;
}
}
@ -107,6 +103,18 @@ void galileo_e1_sinboc_61_gen_int(int* _dest, int* _prn, unsigned int _length_ou
}
}
void galileo_e1_code_gen_sinboc11_float(float* _dest, char _Signal[3], unsigned int _prn)
{
std::string _galileo_signal = _Signal;
unsigned int _codeLength = static_cast<unsigned int>(Galileo_E1_B_CODE_LENGTH_CHIPS);
int primary_code_E1_chips[4092]; // _codeLength not accepted by Clang
galileo_e1_code_gen_int(primary_code_E1_chips, _Signal, _prn); //generate Galileo E1 code, 1 sample per chip
for (unsigned int i = 0; i < _codeLength; i++)
{
_dest[2 * i] = static_cast<float>(primary_code_E1_chips[i]);
_dest[2 * i + 1] = -_dest[2 * i];
}
}
void galileo_e1_gen_float(float* _dest, int* _prn, char _Signal[3])
{
@ -137,8 +145,6 @@ void galileo_e1_gen_float(float* _dest, int* _prn, char _Signal[3])
beta * static_cast<float>(sinboc_61[i]);
}
}
else
return;
}

5
src/algorithms/libs/galileo_e1_signal_processing.h
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@ -34,6 +34,11 @@
#include <complex>
/*!
* \brief This function generates Galileo E1 code (can select E1B or E1C sinboc).
*
*/
void galileo_e1_code_gen_sinboc11_float(float* _dest, char _Signal[3], unsigned int _prn);
/*!
* \brief This function generates Galileo E1 code (can select E1B or E1C, cboc or sinboc

2
src/algorithms/tracking/adapters/galileo_e1_dll_pll_veml_tracking.cc
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@ -63,7 +63,7 @@ GalileoE1DllPllVemlTracking::GalileoE1DllPllVemlTracking(
float very_early_late_space_chips;
float early_late_space_narrow_chips;
float very_early_late_space_narrow_chips;
unified_ = configuration->property(role + ".unified", true);
unified_ = configuration->property(role + ".unified", false);
item_type = configuration->property(role + ".item_type", default_item_type);
int fs_in_deprecated = configuration->property("GNSS-SDR.internal_fs_hz", 2048000);
fs_in = configuration->property("GNSS-SDR.internal_fs_sps", fs_in_deprecated);

2
src/algorithms/tracking/adapters/gps_l1_ca_dll_pll_tracking.cc
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@ -63,7 +63,7 @@ GpsL1CaDllPllTracking::GpsL1CaDllPllTracking(
int fs_in_deprecated = configuration->property("GNSS-SDR.internal_fs_hz", 2048000);
fs_in = configuration->property("GNSS-SDR.internal_fs_sps", fs_in_deprecated);
dump = configuration->property(role + ".dump", false);
unified_ = configuration->property(role + ".unified", true);
unified_ = configuration->property(role + ".unified", false);
pll_bw_hz = configuration->property(role + ".pll_bw_hz", 50.0);
if (FLAGS_pll_bw_hz != 0.0) pll_bw_hz = static_cast<float>(FLAGS_pll_bw_hz);
dll_bw_hz = configuration->property(role + ".dll_bw_hz", 2.0);

155
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
View File

@ -208,9 +208,16 @@ dll_pll_veml_tracking::dll_pll_veml_tracking(
d_correlation_length_ms = 4;
d_code_samples_per_chip = 2; // CBOC disabled: 2 samples per chip. CBOC enabled: 12 samples per chip
d_veml = true;
d_secondary = true;
d_secondary_code_length = static_cast<unsigned int>(Galileo_E1_C_SECONDARY_CODE_LENGTH);
d_secondary_code_string = const_cast<std::string *>(&Galileo_E1_C_SECONDARY_CODE);
if (d_track_pilot)
{
d_secondary = true;
d_secondary_code_length = static_cast<unsigned int>(Galileo_E1_C_SECONDARY_CODE_LENGTH);
d_secondary_code_string = const_cast<std::string *>(&Galileo_E1_C_SECONDARY_CODE);
}
else
{
d_secondary = false;
}
interchange_iq = false; // Note that E1-B and E1-C are in anti-phase, NOT IN QUADRATURE. See Galileo ICD.
}
else if (signal_type.compare("5X") == 0)
@ -273,7 +280,6 @@ dll_pll_veml_tracking::dll_pll_veml_tracking(
// Initialization of local code replica
// Get space for a vector with the sinboc(1,1) replica sampled 2x/chip
d_tracking_code = static_cast<float *>(volk_gnsssdr_malloc(2 * d_code_length_chips * sizeof(float), volk_gnsssdr_get_alignment()));
std::fill_n(d_tracking_code, 2 * d_code_length_chips, 0.0);
// correlator outputs (scalar)
if (d_veml)
{
@ -339,7 +345,6 @@ dll_pll_veml_tracking::dll_pll_veml_tracking(
d_Prompt_Data = static_cast<gr_complex *>(volk_gnsssdr_malloc(sizeof(gr_complex), volk_gnsssdr_get_alignment()));
d_Prompt_Data[0] = gr_complex(0.0, 0.0);
d_data_code = static_cast<float *>(volk_gnsssdr_malloc(2 * d_code_length_chips * sizeof(float), volk_gnsssdr_get_alignment()));
std::fill_n(d_data_code, 2 * d_code_length_chips, 0.0);
}
//--- Initializations ---//
@ -457,29 +462,14 @@ void dll_pll_veml_tracking::start_tracking()
if (d_track_pilot)
{
char pilot_signal[3] = "1C";
galileo_e1_code_gen_float_sampled(d_tracking_code,
pilot_signal,
false, //CBOC disabled
d_acquisition_gnss_synchro->PRN,
Galileo_E1_CODE_CHIP_RATE_HZ,
0);
galileo_e1_code_gen_float_sampled(d_data_code,
d_acquisition_gnss_synchro->Signal,
false, //CBOC disabled
d_acquisition_gnss_synchro->PRN,
Galileo_E1_CODE_CHIP_RATE_HZ,
0);
galileo_e1_code_gen_sinboc11_float(d_tracking_code, pilot_signal, d_acquisition_gnss_synchro->PRN);
galileo_e1_code_gen_sinboc11_float(d_data_code, d_acquisition_gnss_synchro->Signal, d_acquisition_gnss_synchro->PRN);
d_Prompt_Data[0] = gr_complex(0.0, 0.0);
correlator_data_cpu.set_local_code_and_taps(d_code_samples_per_chip * d_code_length_chips, d_data_code, d_prompt_data_shift);
}
else
{
galileo_e1_code_gen_float_sampled(d_tracking_code,
d_acquisition_gnss_synchro->Signal,
false, //CBOC disabled
d_acquisition_gnss_synchro->PRN,
Galileo_E1_CODE_CHIP_RATE_HZ,
0);
galileo_e1_code_gen_sinboc11_float(d_tracking_code, d_acquisition_gnss_synchro->Signal, d_acquisition_gnss_synchro->PRN);
}
}
else if (systemName.compare("Galileo") == 0 and signal_type.compare("5X") == 0)
@ -693,8 +683,8 @@ void dll_pll_veml_tracking::do_correlation_step(const gr_complex *input_samples)
multicorrelator_cpu.Carrier_wipeoff_multicorrelator_resampler(
d_rem_carr_phase_rad,
d_carrier_phase_step_rad,
d_rem_code_phase_chips * static_cast<double>(d_code_samples_per_chip),
d_code_phase_step_chips * static_cast<double>(d_code_samples_per_chip),
static_cast<float>(d_rem_code_phase_chips) * static_cast<float>(d_code_samples_per_chip),
static_cast<float>(d_code_phase_step_chips) * static_cast<float>(d_code_samples_per_chip),
d_vector_length);
// DATA CORRELATOR (if tracking tracks the pilot signal)
@ -704,8 +694,8 @@ void dll_pll_veml_tracking::do_correlation_step(const gr_complex *input_samples)
correlator_data_cpu.Carrier_wipeoff_multicorrelator_resampler(
d_rem_carr_phase_rad,
d_carrier_phase_step_rad,
d_rem_code_phase_chips * static_cast<double>(d_code_samples_per_chip),
d_code_phase_step_chips * static_cast<double>(d_code_samples_per_chip),
static_cast<float>(d_rem_code_phase_chips) * static_cast<float>(d_code_samples_per_chip),
static_cast<float>(d_code_phase_step_chips) * static_cast<float>(d_code_samples_per_chip),
d_vector_length);
}
}
@ -847,13 +837,29 @@ void dll_pll_veml_tracking::log_data()
double tmp_double;
if (d_track_pilot)
{
prompt_I = d_Prompt_Data->real();
prompt_Q = d_Prompt_Data->imag();
if (interchange_iq)
{
prompt_I = d_Prompt_Data->imag();
prompt_Q = d_Prompt_Data->real();
}
else
{
prompt_I = d_Prompt_Data->real();
prompt_Q = d_Prompt_Data->imag();
}
}
else
{
prompt_I = d_Prompt->real();
prompt_Q = d_Prompt->imag();
if (interchange_iq)
{
prompt_I = d_Prompt->imag();
prompt_Q = d_Prompt->real();
}
else
{
prompt_I = d_Prompt->real();
prompt_Q = d_Prompt->imag();
}
}
if (d_veml)
{
@ -991,6 +997,12 @@ int dll_pll_veml_tracking::general_work(int noutput_items __attribute__((unused)
if (d_Prompt_buffer_deque.size() == d_secondary_code_length)
{
next_state = acquire_secondary();
if (next_state)
{
std::cout << "Secondary code locked for CH " << d_channel
<< " : Satellite " << Gnss_Satellite(systemName, d_acquisition_gnss_synchro->PRN) << std::endl;
}
d_Prompt_buffer_deque.pop_front();
}
}
@ -1023,21 +1035,24 @@ int dll_pll_veml_tracking::general_work(int noutput_items __attribute__((unused)
d_last_prompt = gr_complex(0.0, 0.0);
d_Prompt_buffer_deque.clear();
d_current_symbol = 0;
d_code_loop_filter.set_DLL_BW(d_dll_bw_narrow_hz);
d_carrier_loop_filter.set_PLL_BW(d_pll_bw_narrow_hz);
// Set narrow taps delay values [chips]
if (d_veml)
if (d_secondary)
{
d_local_code_shift_chips[0] = -d_very_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[1] = -d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[3] = d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[4] = d_very_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
}
else
{
d_local_code_shift_chips[0] = -d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[2] = d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_code_loop_filter.set_DLL_BW(d_dll_bw_narrow_hz);
d_carrier_loop_filter.set_PLL_BW(d_pll_bw_narrow_hz);
if (d_veml)
{
d_local_code_shift_chips[0] = -d_very_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[1] = -d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[3] = d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[4] = d_very_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
}
else
{
d_local_code_shift_chips[0] = -d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
d_local_code_shift_chips[2] = d_early_late_spc_narrow_chips * static_cast<float>(d_code_samples_per_chip);
}
}
// UPDATE INTEGRATION TIME
@ -1075,14 +1090,31 @@ int dll_pll_veml_tracking::general_work(int noutput_items __attribute__((unused)
// ########### Output the tracking results to Telemetry block ##########
if (interchange_iq)
{
//Note that data and pilot components are in quadrature. I and Q are interchanged
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt_Data).imag());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt_Data).real());
if (d_track_pilot)
{
//Note that data and pilot components are in quadrature. I and Q are interchanged
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt_Data).imag());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt_Data).real());
}
else
{
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt).imag());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt).real());
}
}
else
{
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt).real());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt).imag());
if (d_track_pilot)
{
//Note that data and pilot components are in quadrature. I and Q are interchanged
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt_Data).real());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt_Data).imag());
}
else
{
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt).real());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt).imag());
}
}
current_synchro_data.Code_phase_samples = d_rem_code_phase_samples;
current_synchro_data.Carrier_phase_rads = d_acc_carrier_phase_rad;
@ -1131,14 +1163,31 @@ int dll_pll_veml_tracking::general_work(int noutput_items __attribute__((unused)
// ########### Output the tracking results to Telemetry block ##########
if (interchange_iq)
{
//Note that data and pilot components are in quadrature. I and Q are interchanged
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt_Data).imag());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt_Data).real());
if (d_track_pilot)
{
//Note that data and pilot components are in quadrature. I and Q are interchanged
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt_Data).imag());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt_Data).real());
}
else
{
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt).imag());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt).real());
}
}
else
{
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt).real());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt).imag());
if (d_track_pilot)
{
//Note that data and pilot components are in quadrature. I and Q are interchanged
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt_Data).real());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt_Data).imag());
}
else
{
current_synchro_data.Prompt_I = static_cast<double>((*d_Prompt).real());
current_synchro_data.Prompt_Q = static_cast<double>((*d_Prompt).imag());
}
}
current_synchro_data.Code_phase_samples = d_rem_code_phase_samples;
current_synchro_data.Carrier_phase_rads = d_acc_carrier_phase_rad;