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https://github.com/gnss-sdr/gnss-sdr
synced 2025-04-02 16:57:03 +00:00
remove old code and unrequired includes
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b270d1ca61
@ -130,7 +130,7 @@ bool cpu_multicorrelator::Carrier_wipeoff_multicorrelator_resampler(
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lv_32fc_t phase_offset_as_complex[1];
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phase_offset_as_complex[0] = lv_cmake(std::cos(rem_carrier_phase_in_rad), -std::sin(rem_carrier_phase_in_rad));
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volk_32fc_s32fc_x2_rotator_32fc(d_sig_doppler_wiped, d_sig_in, std::exp(lv_32fc_t(0, -phase_step_rad)),phase_offset_as_complex, signal_length_samples);
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volk_32fc_s32fc_x2_rotator_32fc(d_sig_doppler_wiped, d_sig_in, std::exp(lv_32fc_t(0, -phase_step_rad)), phase_offset_as_complex, signal_length_samples);
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update_local_code(signal_length_samples,rem_code_phase_chips, code_phase_step_chips);
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for (int current_correlator_tap = 0; current_correlator_tap < d_n_correlators; current_correlator_tap++)
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{
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@ -34,9 +34,7 @@
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#include "cpu_multicorrelator_16sc.h"
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#include <cmath>
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#include <iostream>
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#include <gnuradio/fxpt.h> // fixed point sine and cosine
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#include "volk_gnsssdr/volk_gnsssdr.h"
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bool cpu_multicorrelator_16sc::init(
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@ -47,15 +45,15 @@ bool cpu_multicorrelator_16sc::init(
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size_t size = max_signal_length_samples * sizeof(lv_16sc_t);
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// NCO signal
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d_nco_in = static_cast<lv_16sc_t*>(volk_malloc(size, volk_get_alignment()));
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d_nco_in = static_cast<lv_16sc_t*>(volk_gnsssdr_malloc(size, volk_gnsssdr_get_alignment()));
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// Doppler-free signal
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d_sig_doppler_wiped = static_cast<lv_16sc_t*>(volk_malloc(size, volk_get_alignment()));
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d_sig_doppler_wiped = static_cast<lv_16sc_t*>(volk_gnsssdr_malloc(size, volk_gnsssdr_get_alignment()));
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d_local_codes_resampled = new lv_16sc_t*[n_correlators];
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for (int n = 0; n < n_correlators; n++)
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{
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d_local_codes_resampled[n] = static_cast<lv_16sc_t*>(volk_malloc(size, volk_get_alignment()));
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d_local_codes_resampled[n] = static_cast<lv_16sc_t*>(volk_gnsssdr_malloc(size, volk_gnsssdr_get_alignment()));
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}
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d_n_correlators = n_correlators;
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return true;
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@ -88,7 +86,7 @@ bool cpu_multicorrelator_16sc::set_input_output_vectors(lv_16sc_t* corr_out, con
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void cpu_multicorrelator_16sc::update_local_code(int correlator_length_samples,float rem_code_phase_chips, float code_phase_step_chips)
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{
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float *tmp_code_phases_chips;
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tmp_code_phases_chips = static_cast<float*>(volk_malloc(d_n_correlators*sizeof(float), volk_get_alignment()));
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tmp_code_phases_chips = static_cast<float*>(volk_gnsssdr_malloc(d_n_correlators*sizeof(float), volk_gnsssdr_get_alignment()));
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for (int n = 0; n < d_n_correlators; n++)
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{
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tmp_code_phases_chips[n] = d_shifts_chips[n] - rem_code_phase_chips;
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@ -102,37 +100,10 @@ void cpu_multicorrelator_16sc::update_local_code(int correlator_length_samples,f
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d_n_correlators,
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d_code_length_chips);
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volk_free(tmp_code_phases_chips);
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// float local_code_chip_index;
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// for (int current_correlator_tap = 0; current_correlator_tap < d_n_correlators; current_correlator_tap++)
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// {
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// for (int n = 0; n < correlator_length_samples; n++)
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// {
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// // resample code for current tap
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// local_code_chip_index = std::fmod(code_phase_step_chips*static_cast<float>(n)+ d_shifts_chips[current_correlator_tap] - rem_code_phase_chips, d_code_length_chips);
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// //Take into account that in multitap correlators, the shifts can be negative!
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// if (local_code_chip_index < 0.0) local_code_chip_index += d_code_length_chips;
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// d_local_codes_resampled[current_correlator_tap][n] = d_local_code_in[static_cast<int>(round(local_code_chip_index))];
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// }
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// }
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volk_gnsssdr_free(tmp_code_phases_chips);
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}
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void cpu_multicorrelator_16sc::update_local_carrier(int correlator_length_samples, float rem_carr_phase_rad, float phase_step_rad)
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{
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float sin_f, cos_f;
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int phase_step_rad_i = gr::fxpt::float_to_fixed(phase_step_rad);
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int phase_rad_i = gr::fxpt::float_to_fixed(rem_carr_phase_rad);
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for(int i = 0; i < correlator_length_samples; i++)
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{
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gr::fxpt::sincos(phase_rad_i, &sin_f, &cos_f);
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d_nco_in[i] = lv_16sc_t((short int)(cos_f*2.0), (short int)(-sin_f*2.0));
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phase_rad_i += phase_step_rad_i;
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}
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}
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bool cpu_multicorrelator_16sc::Carrier_wipeoff_multicorrelator_resampler(
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float rem_carrier_phase_in_rad,
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float phase_step_rad,
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@ -165,11 +136,11 @@ cpu_multicorrelator_16sc::cpu_multicorrelator_16sc()
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bool cpu_multicorrelator_16sc::free()
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{
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// Free memory
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if (d_sig_doppler_wiped != NULL) volk_free(d_sig_doppler_wiped);
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if (d_nco_in != NULL) volk_free(d_nco_in);
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if (d_sig_doppler_wiped != NULL) volk_gnsssdr_free(d_sig_doppler_wiped);
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if (d_nco_in != NULL) volk_gnsssdr_free(d_nco_in);
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for (int n = 0; n < d_n_correlators; n++)
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{
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volk_free(d_local_codes_resampled[n]);
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volk_gnsssdr_free(d_local_codes_resampled[n]);
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}
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delete d_local_codes_resampled;
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return true;
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@ -35,7 +35,6 @@
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#ifndef GNSS_SDR_CPU_MULTICORRELATOR_16SC_H_
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#define GNSS_SDR_CPU_MULTICORRELATOR_16SC_H_
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#include <volk/volk.h> //include original volk first!
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#include <volk_gnsssdr/volk_gnsssdr.h>
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@ -50,7 +49,6 @@ public:
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bool set_local_code_and_taps(int code_length_chips, const lv_16sc_t* local_code_in, float *shifts_chips);
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bool set_input_output_vectors(lv_16sc_t* corr_out, const lv_16sc_t* sig_in);
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void update_local_code(int correlator_length_samples, float rem_code_phase_chips, float code_phase_step_chips);
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void update_local_carrier(int correlator_length_samples, float rem_carr_phase_rad, float phase_step_rad);
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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);
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bool free();
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