/*! * \file glonass_l1_ca_dll_pll_c_aid_tracking_sc.h * \brief Implementation of a code DLL + carrier PLL tracking block * \author Gabriel Araujo, 2017. gabriel.araujo.5000(at)gmail.com * \author Luis Esteve, 2017. luis(at)epsilon-formacion.com * \author Damian Miralles, 2017. dmiralles2009(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, Birkha user, 2007 * * ----------------------------------------------------------------------------- * * Copyright (C) 2010-2020 (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_GLONASS_L1_CA_DLL_PLL_C_AID_TRACKING_SC_H #define GNSS_SDR_GLONASS_L1_CA_DLL_PLL_C_AID_TRACKING_SC_H #include "cpu_multicorrelator_16sc.h" #include "glonass_l1_signal_processing.h" #include "gnss_block_interface.h" #include "gnss_synchro.h" #include "tracking_2nd_DLL_filter.h" #include "tracking_FLL_PLL_filter.h" #include #include #include // for volk_gnsssdr::vector #include #include #include #include /** \addtogroup Tracking * \{ */ /** \addtogroup Tracking_gnuradio_blocks * \{ */ class glonass_l1_ca_dll_pll_c_aid_tracking_sc; using glonass_l1_ca_dll_pll_c_aid_tracking_sc_sptr = gnss_shared_ptr; glonass_l1_ca_dll_pll_c_aid_tracking_sc_sptr glonass_l1_ca_dll_pll_c_aid_make_tracking_sc( int64_t fs_in, uint32_t vector_length, bool dump, const std::string& dump_filename, float pll_bw_hz, float dll_bw_hz, float pll_bw_narrow_hz, float dll_bw_narrow_hz, int32_t extend_correlation_ms, float early_late_space_chips); /*! * \brief This class implements a DLL + PLL tracking loop block */ class glonass_l1_ca_dll_pll_c_aid_tracking_sc : public gr::block { public: ~glonass_l1_ca_dll_pll_c_aid_tracking_sc(); void set_channel(uint32_t channel); void set_gnss_synchro(Gnss_Synchro* p_gnss_synchro); void start_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 glonass_l1_ca_dll_pll_c_aid_tracking_sc_sptr glonass_l1_ca_dll_pll_c_aid_make_tracking_sc( int64_t fs_in, uint32_t vector_length, bool dump, const std::string& dump_filename, float pll_bw_hz, float dll_bw_hz, float pll_bw_narrow_hz, float dll_bw_narrow_hz, int32_t extend_correlation_ms, float early_late_space_chips); glonass_l1_ca_dll_pll_c_aid_tracking_sc( int64_t fs_in, uint32_t vector_length, bool dump, const std::string& dump_filename, float pll_bw_hz, float dll_bw_hz, float pll_bw_narrow_hz, float dll_bw_narrow_hz, int32_t extend_correlation_ms, float early_late_space_chips); void msg_handler_preamble_index(const pmt::pmt_t& msg); void check_carrier_phase_coherent_initialization(); int32_t save_matfile() const; volk_gnsssdr::vector d_ca_code; volk_gnsssdr::vector d_ca_code_16sc; volk_gnsssdr::vector d_local_code_shift_chips; volk_gnsssdr::vector d_correlator_outs_16sc; volk_gnsssdr::vector d_Prompt_buffer; Cpu_Multicorrelator_16sc multicorrelator_cpu_16sc; // PLL and DLL filter library Tracking_2nd_DLL_filter d_code_loop_filter; Tracking_FLL_PLL_filter d_carrier_loop_filter; // symbol history to detect bit transition std::deque d_E_history; std::deque d_P_history; std::deque d_L_history; Gnss_Synchro* d_acquisition_gnss_synchro; // file dump std::string d_dump_filename; std::ofstream d_dump_file; std::map systemName; std::string sys; // tracking configuration vars int64_t d_fs_in; int64_t d_glonass_freq_ch; double d_early_late_spc_chips; uint32_t d_vector_length; uint32_t d_channel; int32_t d_n_correlator_taps; // remaining code phase and carrier phase between tracking loops double d_rem_code_phase_samples; double d_rem_code_phase_chips; double d_rem_carrier_phase_rad; int32_t d_rem_code_phase_integer_samples; // acquisition double d_acq_code_phase_samples; double d_acq_carrier_doppler_hz; // tracking vars float d_dll_bw_hz; float d_pll_bw_hz; float d_dll_bw_narrow_hz; float d_pll_bw_narrow_hz; double d_code_freq_chips; double d_code_phase_step_chips; double d_carrier_doppler_hz; double d_carrier_frequency_hz; double d_carrier_doppler_old_hz; double d_carrier_phase_step_rad; double d_acc_carrier_phase_cycles; double d_code_phase_samples; double d_pll_to_dll_assist_secs_Ti; double d_carr_phase_error_secs_Ti; double d_code_error_chips_Ti; double d_preamble_timestamp_s; int32_t d_extend_correlation_ms; double d_code_error_filt_chips_s; double d_code_error_filt_chips_Ti; // Integration period in samples int32_t d_correlation_length_samples; // processing samples counters uint64_t d_sample_counter; uint64_t d_acq_sample_stamp; // CN0 estimation and lock detector int32_t d_cn0_estimation_counter; double d_carrier_lock_test; double d_CN0_SNV_dB_Hz; double d_carrier_lock_threshold; int32_t d_carrier_lock_fail_counter; bool d_enable_extended_integration; bool d_preamble_synchronized; // control vars bool d_enable_tracking; bool d_pull_in; bool d_acc_carrier_phase_initialized; bool d_dump; }; /** \} */ /** \} */ #endif // GNSS_SDR_GLONASS_L1_CA_DLL_PLL_C_AID_TRACKING_SC_H