mirror of https://github.com/gnss-sdr/gnss-sdr
209 lines
6.8 KiB
C++
209 lines
6.8 KiB
C++
/*!
|
|
* \file gps_l1_ca_dll_pll_c_aid_tracking_cc.h
|
|
* \brief Interface of a code DLL + carrier PLL tracking block
|
|
* \author Carlos Aviles, 2010. carlos.avilesr(at)googlemail.com
|
|
* Javier Arribas, 2011. jarribas(at)cttc.es
|
|
*
|
|
* 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
|
|
*
|
|
* -------------------------------------------------------------------------
|
|
*
|
|
* Copyright (C) 2010-2015 (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.
|
|
*
|
|
* GNSS-SDR is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GNSS-SDR is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* 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/>.
|
|
*
|
|
* -------------------------------------------------------------------------
|
|
*/
|
|
|
|
#ifndef GNSS_SDR_GPS_L1_CA_DLL_PLL_C_AID_TRACKING_CC_H
|
|
#define GNSS_SDR_GPS_L1_CA_DLL_PLL_C_AID_TRACKING_CC_H
|
|
|
|
#include <fstream>
|
|
#include <map>
|
|
#include <deque>
|
|
#include <string>
|
|
#include <gnuradio/block.h>
|
|
#include <gnuradio/msg_queue.h>
|
|
#include <pmt/pmt.h>
|
|
#include "concurrent_queue.h"
|
|
#include "gnss_synchro.h"
|
|
#include "tracking_2nd_DLL_filter.h"
|
|
#include "tracking_FLL_PLL_filter.h"
|
|
#include "tracking_loop_filter.h"
|
|
#include "cpu_multicorrelator.h"
|
|
|
|
class gps_l1_ca_dll_pll_c_aid_tracking_cc;
|
|
|
|
typedef boost::shared_ptr<gps_l1_ca_dll_pll_c_aid_tracking_cc>
|
|
gps_l1_ca_dll_pll_c_aid_tracking_cc_sptr;
|
|
|
|
gps_l1_ca_dll_pll_c_aid_tracking_cc_sptr
|
|
gps_l1_ca_dll_pll_c_aid_make_tracking_cc(long if_freq,
|
|
long fs_in, unsigned
|
|
int vector_length,
|
|
boost::shared_ptr<gr::msg_queue> queue,
|
|
bool dump,
|
|
std::string dump_filename,
|
|
float pll_bw_hz,
|
|
float dll_bw_hz,
|
|
float pll_bw_narrow_hz,
|
|
float dll_bw_narrow_hz,
|
|
int extend_correlation_ms,
|
|
float early_late_space_chips);
|
|
|
|
|
|
|
|
/*!
|
|
* \brief This class implements a DLL + PLL tracking loop block
|
|
*/
|
|
class gps_l1_ca_dll_pll_c_aid_tracking_cc: public gr::block
|
|
{
|
|
public:
|
|
~gps_l1_ca_dll_pll_c_aid_tracking_cc();
|
|
|
|
void set_channel(unsigned int 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 gps_l1_ca_dll_pll_c_aid_tracking_cc_sptr
|
|
gps_l1_ca_dll_pll_c_aid_make_tracking_cc(long if_freq,
|
|
long fs_in, unsigned
|
|
int vector_length,
|
|
boost::shared_ptr<gr::msg_queue> queue,
|
|
bool dump,
|
|
std::string dump_filename,
|
|
float pll_bw_hz,
|
|
float dll_bw_hz,
|
|
float pll_bw_narrow_hz,
|
|
float dll_bw_narrow_hz,
|
|
int extend_correlation_ms,
|
|
float early_late_space_chips);
|
|
|
|
gps_l1_ca_dll_pll_c_aid_tracking_cc(long if_freq,
|
|
long fs_in, unsigned
|
|
int vector_length,
|
|
boost::shared_ptr<gr::msg_queue> queue,
|
|
bool dump,
|
|
std::string dump_filename,
|
|
float pll_bw_hz,
|
|
float dll_bw_hz,
|
|
float pll_bw_narrow_hz,
|
|
float dll_bw_narrow_hz,
|
|
int extend_correlation_ms,
|
|
float early_late_space_chips);
|
|
|
|
// tracking configuration vars
|
|
boost::shared_ptr<gr::msg_queue> d_queue;
|
|
unsigned int d_vector_length;
|
|
bool d_dump;
|
|
|
|
Gnss_Synchro* d_acquisition_gnss_synchro;
|
|
unsigned int d_channel;
|
|
long d_if_freq;
|
|
long d_fs_in;
|
|
|
|
double d_early_late_spc_chips;
|
|
int d_n_correlator_taps;
|
|
|
|
gr_complex* d_ca_code;
|
|
float* d_local_code_shift_chips;
|
|
gr_complex* d_correlator_outs;
|
|
cpu_multicorrelator multicorrelator_cpu;
|
|
|
|
// 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;
|
|
int d_rem_code_phase_integer_samples;
|
|
|
|
// PLL and DLL filter library
|
|
//Tracking_2nd_DLL_filter d_code_loop_filter;
|
|
Tracking_2nd_DLL_filter d_code_loop_filter;
|
|
Tracking_FLL_PLL_filter d_carrier_loop_filter;
|
|
|
|
// 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_phase_step_rad;
|
|
double d_acc_carrier_phase_cycles;
|
|
double d_code_phase_samples;
|
|
double d_pll_to_dll_assist_secs_Ti;
|
|
double d_code_error_chips_Ti;
|
|
double d_code_error_filt_chips_s;
|
|
double d_code_error_filt_chips_Ti;
|
|
double d_carr_phase_error_secs_Ti;
|
|
|
|
// symbol history to detect bit transition
|
|
std::deque<gr_complex> d_E_history;
|
|
std::deque<gr_complex> d_P_history;
|
|
std::deque<gr_complex> d_L_history;
|
|
double d_preamble_timestamp_s;
|
|
int d_extend_correlation_ms;
|
|
bool d_enable_extended_integration;
|
|
bool d_preamble_synchronized;
|
|
int d_correlation_symbol_counter;
|
|
void msg_handler_preamble_index(pmt::pmt_t msg);
|
|
|
|
//Integration period in samples
|
|
int d_correlation_length_samples;
|
|
|
|
//processing samples counters
|
|
unsigned long int d_sample_counter;
|
|
unsigned long int d_acq_sample_stamp;
|
|
|
|
// CN0 estimation and lock detector
|
|
int d_cn0_estimation_counter;
|
|
gr_complex* d_Prompt_buffer;
|
|
double d_carrier_lock_test;
|
|
double d_CN0_SNV_dB_Hz;
|
|
double d_carrier_lock_threshold;
|
|
int d_carrier_lock_fail_counter;
|
|
|
|
// control vars
|
|
bool d_enable_tracking;
|
|
bool d_pull_in;
|
|
|
|
// file dump
|
|
std::string d_dump_filename;
|
|
std::ofstream d_dump_file;
|
|
|
|
std::map<std::string, std::string> systemName;
|
|
std::string sys;
|
|
};
|
|
|
|
#endif //GNSS_SDR_GPS_L1_CA_DLL_PLL_C_AID_TRACKING_CC_H
|