mirror of https://github.com/gnss-sdr/gnss-sdr
212 lines
7.1 KiB
C++
212 lines
7.1 KiB
C++
/*!
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* \file dll_pll_veml_tracking.h
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* \brief Implementation of a code DLL + carrier PLL tracking block.
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* \author Javier Arribas, 2018. jarribas(at)cttc.es
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* \author Antonio Ramos, 2018 antonio.ramosdet(at)gmail.com
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*
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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* -----------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_DLL_PLL_VEML_TRACKING_H
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#define GNSS_SDR_DLL_PLL_VEML_TRACKING_H
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#include "cpu_multicorrelator_real_codes.h"
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#include "dll_pll_conf.h"
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#include "exponential_smoother.h"
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#include "gnss_block_interface.h"
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#include "gnss_time.h" // for timetags produced by File_Timestamp_Signal_Source
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#include "tracking_FLL_PLL_filter.h" // for PLL/FLL filter
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#include "tracking_loop_filter.h" // for DLL filter
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#include <boost/circular_buffer.hpp>
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#include <gnuradio/block.h> // for block
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#include <gnuradio/gr_complex.h> // for gr_complex
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#include <gnuradio/types.h> // for gr_vector_int, gr_vector...
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#include <pmt/pmt.h> // for pmt_t
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#include <volk_gnsssdr/volk_gnsssdr_alloc.h> // for volk_gnsssdr::vector
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#include <cstddef> // for size_t
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#include <cstdint> // for int32_t
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#include <fstream> // for ofstream
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#include <string> // for string
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#include <typeinfo> // for typeid
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#include <utility> // for pair
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/** \addtogroup Tracking
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* \{ */
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/** \addtogroup Tracking_gnuradio_blocks tracking_gr_blocks
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* GNU Radio blocks for GNSS signal tracking.
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* \{ */
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class Gnss_Synchro;
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class dll_pll_veml_tracking;
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using dll_pll_veml_tracking_sptr = gnss_shared_ptr<dll_pll_veml_tracking>;
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dll_pll_veml_tracking_sptr dll_pll_veml_make_tracking(const Dll_Pll_Conf &conf_);
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/*!
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* \brief This class implements a code DLL + carrier PLL tracking block.
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*/
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class dll_pll_veml_tracking : public gr::block
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{
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public:
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~dll_pll_veml_tracking() override;
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void set_channel(uint32_t channel);
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void set_gnss_synchro(Gnss_Synchro *p_gnss_synchro);
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void start_tracking();
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void stop_tracking();
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int general_work(int noutput_items, gr_vector_int &ninput_items,
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gr_vector_const_void_star &input_items, gr_vector_void_star &output_items) override;
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void forecast(int noutput_items, gr_vector_int &ninput_items_required) override;
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private:
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friend dll_pll_veml_tracking_sptr dll_pll_veml_make_tracking(const Dll_Pll_Conf &conf_);
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explicit dll_pll_veml_tracking(const Dll_Pll_Conf &conf_);
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void msg_handler_telemetry_to_trk(const pmt::pmt_t &msg);
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void do_correlation_step(const gr_complex *input_samples);
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void run_dll_pll();
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void check_carrier_phase_coherent_initialization();
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void update_tracking_vars();
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void clear_tracking_vars();
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void save_correlation_results();
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void log_data();
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bool cn0_and_tracking_lock_status(double coh_integration_time_s);
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bool acquire_secondary();
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int64_t uint64diff(uint64_t first, uint64_t second);
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int32_t save_matfile() const;
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Cpu_Multicorrelator_Real_Codes d_multicorrelator_cpu;
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Cpu_Multicorrelator_Real_Codes d_correlator_data_cpu; // for data channel
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Dll_Pll_Conf d_trk_parameters;
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Exponential_Smoother d_cn0_smoother;
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Exponential_Smoother d_carrier_lock_test_smoother;
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Tracking_loop_filter d_code_loop_filter;
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Tracking_FLL_PLL_filter d_carrier_loop_filter;
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Gnss_Synchro *d_acquisition_gnss_synchro;
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volk_gnsssdr::vector<float> d_tracking_code;
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volk_gnsssdr::vector<float> d_data_code;
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volk_gnsssdr::vector<float> d_local_code_shift_chips;
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volk_gnsssdr::vector<gr_complex> d_correlator_outs;
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volk_gnsssdr::vector<gr_complex> d_Prompt_Data;
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volk_gnsssdr::vector<gr_complex> d_Prompt_buffer;
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boost::circular_buffer<float> d_dll_filt_history;
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boost::circular_buffer<std::pair<double, double>> d_code_ph_history;
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boost::circular_buffer<std::pair<double, double>> d_carr_ph_history;
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boost::circular_buffer<gr_complex> d_Prompt_circular_buffer;
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const size_t int_type_hash_code = typeid(int).hash_code();
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double d_signal_carrier_freq;
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double d_code_period;
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double d_code_chip_rate;
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double d_acq_code_phase_samples;
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double d_acq_carrier_doppler_hz;
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double d_current_correlation_time_s;
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double d_carr_phase_error_hz;
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double d_carr_freq_error_hz;
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double d_carr_error_filt_hz;
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double d_code_error_chips;
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double d_code_error_filt_chips;
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double d_code_freq_chips;
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double d_carrier_doppler_hz;
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double d_acc_carrier_phase_rad;
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double d_rem_code_phase_chips;
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double d_T_chip_seconds;
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double d_T_prn_seconds;
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double d_T_prn_samples;
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double d_K_blk_samples;
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double d_carrier_lock_test;
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double d_CN0_SNV_dB_Hz;
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double d_carrier_lock_threshold;
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double d_carrier_phase_step_rad;
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double d_carrier_phase_rate_step_rad;
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double d_code_phase_step_chips;
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double d_code_phase_rate_step_chips;
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double d_rem_code_phase_samples;
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gr_complex *d_Very_Early;
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gr_complex *d_Early;
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gr_complex *d_Prompt;
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gr_complex *d_Late;
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gr_complex *d_Very_Late;
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gr_complex d_VE_accu;
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gr_complex d_E_accu;
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gr_complex d_P_accu;
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gr_complex d_P_accu_old;
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gr_complex d_L_accu;
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gr_complex d_VL_accu;
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gr_complex d_P_data_accu;
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std::string d_secondary_code_string;
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std::string d_data_secondary_code_string;
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std::string d_systemName;
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std::string d_signal_type;
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std::string d_signal_pretty_name;
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std::string d_dump_filename;
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std::ofstream d_dump_file;
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// uint64_t d_sample_counter;
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uint64_t d_acq_sample_stamp;
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GnssTime d_last_timetag;
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uint64_t d_last_timetag_samplecounter;
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bool d_timetag_waiting;
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float *d_prompt_data_shift;
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float d_rem_carr_phase_rad;
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int32_t d_symbols_per_bit;
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int32_t d_state;
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int32_t d_correlation_length_ms;
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int32_t d_n_correlator_taps;
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int32_t d_current_prn_length_samples;
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int32_t d_extend_correlation_symbols_count;
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int32_t d_current_symbol;
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int32_t d_current_data_symbol;
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int32_t d_cn0_estimation_counter;
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int32_t d_carrier_lock_fail_counter;
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int32_t d_code_lock_fail_counter;
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int32_t d_code_samples_per_chip; // All signals have 1 sample per chip code except Gal. E1 which has 2 (CBOC disabled) or 12 (CBOC enabled)
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int32_t d_code_length_chips;
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uint32_t d_channel;
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uint32_t d_secondary_code_length;
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uint32_t d_data_secondary_code_length;
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bool d_pull_in_transitory;
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bool d_corrected_doppler;
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bool d_interchange_iq;
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bool d_veml;
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bool d_cloop;
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bool d_secondary;
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bool d_dump;
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bool d_dump_mat;
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bool d_acc_carrier_phase_initialized;
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bool d_enable_extended_integration;
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bool d_Flag_PLL_180_deg_phase_locked;
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};
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/** \} */
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/** \} */
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#endif // GNSS_SDR_DLL_PLL_VEML_TRACKING_H
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