/*! * \file dll_pll_veml_tracking.h * \brief Implementation of a code DLL + carrier PLL tracking block. * \author Javier Arribas, 2018. jarribas(at)cttc.es * \author Antonio Ramos, 2018 antonio.ramosdet(at)gmail.com * * ------------------------------------------------------------------------- * * Copyright (C) 2010-2019 (see AUTHORS file for a list of contributors) * * GNSS-SDR is a software defined Global Navigation * Satellite Systems receiver * * This file is part of GNSS-SDR. * * SPDX-License-Identifier: GPL-3.0-or-later * * ------------------------------------------------------------------------- */ #ifndef GNSS_SDR_DLL_PLL_VEML_TRACKING_H #define GNSS_SDR_DLL_PLL_VEML_TRACKING_H #include "cpu_multicorrelator_real_codes.h" #include "dll_pll_conf.h" #include "exponential_smoother.h" #include "tracking_FLL_PLL_filter.h" // for PLL/FLL filter #include "tracking_loop_filter.h" // for DLL filter #include #include // for block #include // for gr_complex #include // for gr_vector_int, gr_vector... #include // for pmt_t #include // for volk_gnsssdr::vector #include // for int32_t #include // for string, ofstream #include #include // for pair #if GNURADIO_USES_STD_POINTERS #include #else #include #endif class Gnss_Synchro; class dll_pll_veml_tracking; #if GNURADIO_USES_STD_POINTERS using dll_pll_veml_tracking_sptr = std::shared_ptr; #else using dll_pll_veml_tracking_sptr = boost::shared_ptr; #endif dll_pll_veml_tracking_sptr dll_pll_veml_make_tracking(const Dll_Pll_Conf &conf_); /*! * \brief This class implements a code DLL + carrier PLL tracking block. */ class dll_pll_veml_tracking : public gr::block { public: ~dll_pll_veml_tracking(); void set_channel(uint32_t channel); 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); void forecast(int noutput_items, gr_vector_int &ninput_items_required); private: friend dll_pll_veml_tracking_sptr dll_pll_veml_make_tracking(const Dll_Pll_Conf &conf_); explicit dll_pll_veml_tracking(const Dll_Pll_Conf &conf_); void msg_handler_telemetry_to_trk(const pmt::pmt_t &msg); void do_correlation_step(const gr_complex *input_samples); void run_dll_pll(); void check_carrier_phase_coherent_initialization(); void update_tracking_vars(); void clear_tracking_vars(); void save_correlation_results(); void log_data(); bool cn0_and_tracking_lock_status(double coh_integration_time_s); bool acquire_secondary(); int32_t save_matfile(); bool d_pull_in_transitory; bool d_corrected_doppler; bool d_interchange_iq; bool d_veml; bool d_cloop; bool d_secondary; bool d_dump; bool d_dump_mat; bool d_acc_carrier_phase_initialized; bool d_enable_extended_integration; int32_t d_symbols_per_bit; int32_t d_preamble_length_symbols; int32_t d_state; int32_t d_correlation_length_ms; int32_t d_n_correlator_taps; int32_t d_current_prn_length_samples; int32_t d_extend_correlation_symbols_count; int32_t d_current_symbol; int32_t d_current_data_symbol; int32_t d_cn0_estimation_counter; int32_t d_carrier_lock_fail_counter; int32_t d_code_lock_fail_counter; uint32_t d_channel; uint32_t d_secondary_code_length; uint32_t d_data_secondary_code_length; uint32_t d_code_length_chips; uint32_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) uint64_t d_sample_counter; uint64_t d_acq_sample_stamp; float *d_prompt_data_shift; float d_rem_carr_phase_rad; double d_signal_carrier_freq; double d_code_period; double d_code_chip_rate; double d_acq_code_phase_samples; double d_acq_carrier_doppler_hz; double d_current_correlation_time_s; double d_carr_phase_error_hz; double d_carr_freq_error_hz; double d_carr_error_filt_hz; double d_code_error_chips; double d_code_error_filt_chips; double d_code_freq_chips; double d_carrier_doppler_hz; double d_acc_carrier_phase_rad; double d_rem_code_phase_chips; double d_T_chip_seconds; double d_T_prn_seconds; double d_T_prn_samples; double d_K_blk_samples; double d_carrier_lock_test; double d_CN0_SNV_dB_Hz; double d_carrier_lock_threshold; double d_carrier_phase_step_rad; double d_carrier_phase_rate_step_rad; double d_code_phase_step_chips; double d_code_phase_rate_step_chips; double d_rem_code_phase_samples; gr_complex *d_Very_Early; gr_complex *d_Early; gr_complex *d_Prompt; gr_complex *d_Late; gr_complex *d_Very_Late; gr_complex d_VE_accu; gr_complex d_E_accu; gr_complex d_P_accu; gr_complex d_P_accu_old; gr_complex d_L_accu; gr_complex d_VL_accu; gr_complex d_P_data_accu; std::string *d_secondary_code_string; std::string *d_data_secondary_code_string; std::string d_systemName; std::string d_signal_type; std::string d_signal_pretty_name; std::string d_dump_filename; std::ofstream d_dump_file; boost::circular_buffer d_dll_filt_history; boost::circular_buffer> d_code_ph_history; boost::circular_buffer> d_carr_ph_history; boost::circular_buffer d_Prompt_circular_buffer; volk_gnsssdr::vector d_tracking_code; volk_gnsssdr::vector d_data_code; volk_gnsssdr::vector d_local_code_shift_chips; volk_gnsssdr::vector d_correlator_outs; volk_gnsssdr::vector d_Prompt_Data; volk_gnsssdr::vector d_Prompt_buffer; Cpu_Multicorrelator_Real_Codes d_multicorrelator_cpu; Cpu_Multicorrelator_Real_Codes d_correlator_data_cpu; // for data channel Dll_Pll_Conf d_trk_parameters; Exponential_Smoother d_cn0_smoother; Exponential_Smoother d_carrier_lock_test_smoother; Gnss_Synchro *d_acquisition_gnss_synchro; Tracking_loop_filter d_code_loop_filter; Tracking_FLL_PLL_filter d_carrier_loop_filter; }; #endif // GNSS_SDR_DLL_PLL_VEML_TRACKING_H