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Add work on Doppler rate

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This commit is contained in:
Carles Fernandez 2018-08-15 13:38:49 +02:00
parent edf82644f2
commit 2b0e0f73ff
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GPG Key ID: 4C583C52B0C3877D
6 changed files with 12 additions and 3 deletions
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3
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.cc
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@ -394,6 +394,7 @@ dll_pll_veml_tracking::dll_pll_veml_tracking(const Dll_Pll_Conf &conf_) : gr::bl
d_extend_correlation_symbols_count = 0;
d_code_phase_step_chips = 0.0;
d_code_phase_rate_step_chips = 0.0;
d_carrier_phase_step_rad = 0.0;
d_rem_code_phase_chips = 0.0;
d_K_blk_samples = 0.0;
@ -707,6 +708,7 @@ void dll_pll_veml_tracking::do_correlation_step(const gr_complex *input_samples)
d_carrier_phase_step_rad,
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),
static_cast<float>(d_code_phase_rate_step_chips) * static_cast<float>(d_code_samples_per_chip),
trk_parameters.vector_length);
// DATA CORRELATOR (if tracking tracks the pilot signal)
@ -718,6 +720,7 @@ void dll_pll_veml_tracking::do_correlation_step(const gr_complex *input_samples)
d_carrier_phase_step_rad,
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),
static_cast<float>(d_code_phase_rate_step_chips) * static_cast<float>(d_code_samples_per_chip),
trk_parameters.vector_length);
}
}

1
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking.h
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@ -145,6 +145,7 @@ private:
gr_complex *d_Prompt_Data;
double d_code_phase_step_chips;
double d_code_phase_rate_step_chips;
double d_carrier_phase_step_rad;
// remaining code phase and carrier phase between tracking loops
double d_rem_code_phase_samples;

2
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h
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@ -233,7 +233,7 @@ private:
int32_t d_correlation_length_samples;
int32_t d_next_prn_length_samples;
uint64_t d_sample_counter_next;
uint32_t d_pull_in = 0;
uint32_t d_pull_in = 0U;
};
#endif //GNSS_SDR_DLL_PLL_VEML_TRACKING_FPGA_H

3
src/algorithms/tracking/libs/cpu_multicorrelator_real_codes.cc
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@ -131,9 +131,10 @@ bool cpu_multicorrelator_real_codes::Carrier_wipeoff_multicorrelator_resampler(
float phase_step_rad,
float rem_code_phase_chips,
float code_phase_step_chips,
float code_phase_rate_step_chips,
int signal_length_samples)
{
update_local_code(signal_length_samples, rem_code_phase_chips, code_phase_step_chips);
update_local_code(signal_length_samples, rem_code_phase_chips, code_phase_step_chips, code_phase_rate_step_chips);
// Regenerate phase at each call in order to avoid numerical issues
lv_32fc_t phase_offset_as_complex[1];
phase_offset_as_complex[0] = lv_cmake(std::cos(rem_carrier_phase_in_rad), -std::sin(rem_carrier_phase_in_rad));

2
src/algorithms/tracking/libs/cpu_multicorrelator_real_codes.h
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@ -52,7 +52,7 @@ public:
bool set_local_code_and_taps(int code_length_chips, const float *local_code_in, float *shifts_chips);
bool set_input_output_vectors(std::complex<float> *corr_out, const std::complex<float> *sig_in);
void update_local_code(int correlator_length_samples, float rem_code_phase_chips, float code_phase_step_chips, float code_phase_rate_step_chips = 0.0);
bool Carrier_wipeoff_multicorrelator_resampler(float rem_carrier_phase_in_rad, float phase_step_rad, float rem_code_phase_chips, float code_phase_step_chips, int signal_length_samples);
bool Carrier_wipeoff_multicorrelator_resampler(float rem_carrier_phase_in_rad, float phase_step_rad, float rem_code_phase_chips, float code_phase_step_chips, float code_phase_rate_step_chips, int signal_length_samples);
bool free();
private:

4
src/tests/unit-tests/signal-processing-blocks/tracking/cpu_multicorrelator_real_codes_test.cc
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@ -49,6 +49,7 @@ void run_correlator_cpu_real_codes(cpu_multicorrelator_real_codes* correlator,
float d_rem_carrier_phase_rad,
float d_carrier_phase_step_rad,
float d_code_phase_step_chips,
float d_code_phase_rate_step_chips,
float d_rem_code_phase_chips,
int correlation_size)
{
@ -58,6 +59,7 @@ void run_correlator_cpu_real_codes(cpu_multicorrelator_real_codes* correlator,
d_carrier_phase_step_rad,
d_code_phase_step_chips,
d_rem_code_phase_chips,
d_code_phase_rate_step_chips,
correlation_size);
}
}
@ -125,6 +127,7 @@ TEST(CpuMulticorrelatorRealCodesTest, MeasureExecutionTime)
float d_rem_carrier_phase_rad = 0.0;
float d_carrier_phase_step_rad = 0.1;
float d_code_phase_step_chips = 0.3;
float d_code_phase_rate_step_chips = 0.00001;
float d_rem_code_phase_chips = 0.4;
EXPECT_NO_THROW(
@ -141,6 +144,7 @@ TEST(CpuMulticorrelatorRealCodesTest, MeasureExecutionTime)
d_rem_carrier_phase_rad,
d_carrier_phase_step_rad,
d_code_phase_step_chips,
d_code_phase_rate_step_chips,
d_rem_code_phase_chips,
correlation_sizes[correlation_sizes_idx]));
}