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updated the FPGA tracking gnuradioblock according to the latest changes in the SW tracking gnuradioblock.

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This commit is contained in:
Marc Majoral 2018-12-14 18:15:21 +01:00
parent ae61646270
commit 7da82dbaea
6 changed files with 383 additions and 307 deletions
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630
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.cc
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50
src/algorithms/tracking/gnuradio_blocks/dll_pll_veml_tracking_fpga.h
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@ -1,19 +1,13 @@
/*!
* \file gps_l1_ca_dll_pll_tracking_fpga.h
* \brief Interface of a code DLL + carrier PLL tracking block
* \file dll_pll_veml_tracking.h
* \brief Implementation of a code DLL + carrier PLL tracking block.
* \author Marc Majoral, 2018. marc.majoral(at)cttc.es
* Carlos Aviles, 2010. carlos.avilesr(at)googlemail.com
* Javier Arribas, 2011. jarribas(at)cttc.es
* Cillian O'Driscoll, 2017. cillian.odriscoll(at)gmail.com
*
* Code DLL + carrier PLL according to the algorithms described in:
* K.Borre, D.M.Akos, N.Bertelsen, P.Rinder, and S.H.Jensen,
* A Software-Defined GPS and Galileo Receiver. A Single-Frequency Approach,
* Birkhauser, 2007
* \author Javier Arribas, 2018. jarribas(at)cttc.es
* \author Antonio Ramos, 2018 antonio.ramosdet(at)gmail.com
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
@ -31,7 +25,7 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
@ -49,19 +43,18 @@
#include <string>
#include <map>
#include <queue>
#include <utility>
#include <boost/circular_buffer.hpp>
#include "fpga_multicorrelator.h"
class dll_pll_veml_tracking_fpga;
typedef boost::shared_ptr<dll_pll_veml_tracking_fpga>
dll_pll_veml_tracking_fpga_sptr;
typedef boost::shared_ptr<dll_pll_veml_tracking_fpga> dll_pll_veml_tracking_fpga_sptr;
dll_pll_veml_tracking_fpga_sptr dll_pll_veml_make_tracking_fpga(const Dll_Pll_Conf_Fpga &conf_);
/*!
* \brief This class implements a DLL + PLL tracking loop block
* \brief This class implements a code DLL + carrier PLL tracking block.
*/
class dll_pll_veml_tracking_fpga : public gr::block
{
@ -72,6 +65,7 @@ public:
void set_gnss_synchro(Gnss_Synchro *p_gnss_synchro);
void start_tracking();
void stop_tracking();
int general_work(int noutput_items, gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items, gr_vector_void_star &output_items);
@ -85,6 +79,8 @@ private:
bool cn0_and_tracking_lock_status(double coh_integration_time_s);
bool acquire_secondary();
//void do_correlation_step(const gr_complex *input_samples);
void do_correlation_step(void);
void run_dll_pll();
void update_tracking_vars();
void clear_tracking_vars();
@ -94,7 +90,6 @@ private:
// tracking configuration vars
Dll_Pll_Conf_Fpga trk_parameters;
//dllpllconf_fpga_t trk_parameters;
bool d_veml;
bool d_cloop;
uint32_t d_channel;
@ -120,14 +115,20 @@ private:
//tracking state machine
int32_t d_state;
bool d_synchonizing;
//Integration period in samples
int32_t d_correlation_length_ms;
int32_t d_n_correlator_taps;
float *d_tracking_code;
float *d_data_code;
float *d_local_code_shift_chips;
float *d_prompt_data_shift;
std::shared_ptr<fpga_multicorrelator_8sc> multicorrelator_fpga;
/* TODO: currently the multicorrelator does not support adding extra correlator
with different local code, thus we need extra multicorrelator instance.
Implement this functionality inside multicorrelator class
as an enhancement to increase the performance
*/
gr_complex *d_correlator_outs;
gr_complex *d_Very_Early;
gr_complex *d_Early;
@ -149,10 +150,14 @@ private:
gr_complex *d_Prompt_Data;
double d_code_phase_step_chips;
double d_code_phase_rate_step_chips;
boost::circular_buffer<std::pair<double, double>> d_code_ph_history;
double d_carrier_phase_step_rad;
double d_carrier_phase_rate_step_rad;
boost::circular_buffer<std::pair<double, double>> d_carr_ph_history;
// remaining code phase and carrier phase between tracking loops
double d_rem_code_phase_samples;
double d_rem_carr_phase_rad;
float d_rem_carr_phase_rad;
// PLL and DLL filter library
Tracking_2nd_DLL_filter d_code_loop_filter;
@ -167,12 +172,10 @@ private:
double d_carr_error_filt_hz;
double d_code_error_chips;
double d_code_error_filt_chips;
double d_K_blk_samples;
double d_code_freq_chips;
double d_carrier_doppler_hz;
double d_acc_carrier_phase_rad;
double d_rem_code_phase_chips;
double d_code_phase_samples;
double T_chip_seconds;
double T_prn_seconds;
double T_prn_samples;
@ -182,11 +185,13 @@ private:
// processing samples counters
uint64_t d_sample_counter;
uint64_t d_acq_sample_stamp;
uint64_t d_absolute_samples_offset;
// CN0 estimation and lock detector
int32_t d_cn0_estimation_counter;
int32_t d_carrier_lock_fail_counter;
std::deque<float> d_carrier_lock_detector_queue;
double d_carrier_lock_test;
double d_CN0_SNV_dB_Hz;
double d_carrier_lock_threshold;
@ -203,7 +208,6 @@ 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 = 0U;
};
#endif //GNSS_SDR_DLL_PLL_VEML_TRACKING_FPGA_H

4
src/algorithms/tracking/libs/dll_pll_conf_fpga.cc
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@ -36,12 +36,14 @@
Dll_Pll_Conf_Fpga::Dll_Pll_Conf_Fpga()
{
/* DLL/PLL tracking configuration */
high_dyn = false;
smoother_length = 10;
fs_in = 0.0;
vector_length = 0U;
dump = false;
dump_mat = true;
dump_filename = std::string("./dll_pll_dump.dat");
pll_bw_hz = 40.0;
pll_bw_hz = 35.0;
dll_bw_hz = 2.0;
pll_bw_narrow_hz = 5.0;
dll_bw_narrow_hz = 0.75;

2
src/algorithms/tracking/libs/dll_pll_conf_fpga.h
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@ -54,9 +54,11 @@ public:
float early_late_space_narrow_chips;
float very_early_late_space_narrow_chips;
int32_t extend_correlation_symbols;
bool high_dyn;
int32_t cn0_samples;
int32_t cn0_min;
int32_t max_lock_fail;
uint32_t smoother_length;
double carrier_lock_th;
bool track_pilot;
char system;

2
src/algorithms/tracking/libs/fpga_multicorrelator.cc
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@ -131,7 +131,9 @@ void fpga_multicorrelator_8sc::update_local_code(float rem_code_phase_chips)
void fpga_multicorrelator_8sc::Carrier_wipeoff_multicorrelator_resampler(
float rem_carrier_phase_in_rad, float phase_step_rad,
float carrier_phase_rate_step_rad,
float rem_code_phase_chips, float code_phase_step_chips,
float code_phase_rate_step_chips,
int32_t signal_length_samples)
{
update_local_code(rem_code_phase_chips);

2
src/algorithms/tracking/libs/fpga_multicorrelator.h
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@ -66,7 +66,9 @@ public:
//bool Carrier_wipeoff_multicorrelator_resampler(
void Carrier_wipeoff_multicorrelator_resampler(
float rem_carrier_phase_in_rad, float phase_step_rad,
float carrier_phase_rate_step_rad,
float rem_code_phase_chips, float code_phase_step_chips,
float code_phase_rate_step_chips,
int32_t signal_length_samples);
bool free();
void set_channel(uint32_t channel);