mirror of
https://github.com/gnss-sdr/gnss-sdr
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Add GPS L5 files
This commit is contained in:
Antonio Ramos
parent
e57c66bd83
commit
7c8855b9ac
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@ -18,7 +18,8 @@
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set(TELEMETRY_DECODER_ADAPTER_SOURCES
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gps_l1_ca_telemetry_decoder.cc
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gps_l2c_telemetry_decoder.cc
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gps_l2c_telemetry_decoder.cc
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gps_l5_telemetry_decoder.cc
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galileo_e1b_telemetry_decoder.cc
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sbas_l1_telemetry_decoder.cc
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galileo_e5a_telemetry_decoder.cc
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@ -0,0 +1,103 @@
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/*!
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* \file gps_l5_telemetry_decoder.cc
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* \brief Implementation of an adapter of a GPS L5 NAV data decoder block
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* to a TelemetryDecoderInterface
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* \author Antonio Ramos, 2017. antonio.ramos(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#include "gps_l5_telemetry_decoder.h"
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#include <gnuradio/io_signature.h>
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#include <glog/logging.h>
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#include "concurrent_queue.h"
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#include "gps_cnav_ephemeris.h"
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#include "gps_almanac.h"
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#include "gps_cnav_iono.h"
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#include "gps_cnav_utc_model.h"
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#include "configuration_interface.h"
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using google::LogMessage;
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GpsL5TelemetryDecoder::GpsL5TelemetryDecoder(ConfigurationInterface* configuration,
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std::string role,
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unsigned int in_streams,
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unsigned int out_streams) :
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role_(role),
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in_streams_(in_streams),
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out_streams_(out_streams)
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{
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std::string default_dump_filename = "./navigation.dat";
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DLOG(INFO) << "role " << role;
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dump_ = configuration->property(role + ".dump", false);
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dump_filename_ = configuration->property(role + ".dump_filename", default_dump_filename);
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// make telemetry decoder object
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telemetry_decoder_ = gps_l5_make_telemetry_decoder_cc(satellite_, dump_);
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DLOG(INFO) << "telemetry_decoder(" << telemetry_decoder_->unique_id() << ")";
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LOG(INFO) << "global navigation message queue assigned to telemetry_decoder (" << telemetry_decoder_->unique_id() << ")" << "role " << role;
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channel_ = 0;
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}
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GpsL5TelemetryDecoder::~GpsL5TelemetryDecoder()
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{}
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void GpsL5TelemetryDecoder::set_satellite(const Gnss_Satellite & satellite)
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{
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satellite_ = Gnss_Satellite(satellite.get_system(), satellite.get_PRN());
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telemetry_decoder_->set_satellite(satellite_);
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DLOG(INFO) << "TELEMETRY DECODER: satellite set to " << satellite_;
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}
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void GpsL5TelemetryDecoder::connect(gr::top_block_sptr top_block)
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{
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if(top_block) { /* top_block is not null */};
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// Nothing to connect internally
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DLOG(INFO) << "nothing to connect internally";
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}
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void GpsL5TelemetryDecoder::disconnect(gr::top_block_sptr top_block)
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{
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if(top_block) { /* top_block is not null */};
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// Nothing to disconnect
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}
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gr::basic_block_sptr GpsL5TelemetryDecoder::get_left_block()
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{
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return telemetry_decoder_;
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}
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gr::basic_block_sptr GpsL5TelemetryDecoder::get_right_block()
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{
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return telemetry_decoder_;
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}
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@ -0,0 +1,95 @@
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/*!
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* \file gps_l5_telemetry_decoder.h
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* \brief Interface of an adapter of a GPS L5 (CNAV) data decoder block
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* to a TelemetryDecoderInterface
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* \author Antonio Ramos, 2017. antonio.ramos(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_GPS_L5_TELEMETRY_DECODER_H_
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#define GNSS_SDR_GPS_L5_TELEMETRY_DECODER_H_
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#include <string>
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#include "telemetry_decoder_interface.h"
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#include "gps_l5_telemetry_decoder_cc.h"
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class ConfigurationInterface;
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/*!
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* \brief This class implements a NAV data decoder for GPS L5
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*/
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class GpsL5TelemetryDecoder : public TelemetryDecoderInterface
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{
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public:
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GpsL5TelemetryDecoder(ConfigurationInterface* configuration,
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std::string role,
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unsigned int in_streams,
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unsigned int out_streams);
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virtual ~GpsL5TelemetryDecoder();
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inline std::string role() override
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{
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return role_;
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}
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//! Returns "GPS_L5_Telemetry_Decoder"
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inline std::string implementation() override
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{
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return "GPS_L5_Telemetry_Decoder";
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}
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void connect(gr::top_block_sptr top_block) override;
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void disconnect(gr::top_block_sptr top_block) override;
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gr::basic_block_sptr get_left_block() override;
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gr::basic_block_sptr get_right_block() override;
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void set_satellite(const Gnss_Satellite & satellite) override;
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inline void set_channel(int channel) override { telemetry_decoder_->set_channel(channel); }
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inline void reset() override
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{
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return;
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}
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inline size_t item_size() override
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{
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return 0;
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}
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private:
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gps_l5_telemetry_decoder_cc_sptr telemetry_decoder_;
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Gnss_Satellite satellite_;
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int channel_;
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bool dump_;
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std::string dump_filename_;
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std::string role_;
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unsigned int in_streams_;
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unsigned int out_streams_;
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};
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#endif
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@ -19,6 +19,7 @@
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set(TELEMETRY_DECODER_GR_BLOCKS_SOURCES
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gps_l1_ca_telemetry_decoder_cc.cc
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gps_l2c_telemetry_decoder_cc.cc
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gps_l5_telemetry_decoder_cc.cc
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galileo_e1b_telemetry_decoder_cc.cc
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sbas_l1_telemetry_decoder_cc.cc
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galileo_e5a_telemetry_decoder_cc.cc
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@ -297,14 +297,8 @@ int galileo_e5a_telemetry_decoder_cc::general_work (int noutput_items __attribut
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d_symbol_counter = 0;
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flag_bit_start = true;
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corr_value = 0;
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while(d_preamble_init.size() > 0)
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{ //Clear preamble correlating queue
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d_preamble_init.pop_front();
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}
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while(d_symbol_history.size() > 0)
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{ //Clear symbol queue in order to prevent possible symbol discontinuities
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d_symbol_history.pop_front();
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}
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d_preamble_init.clear();
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d_symbol_history.clear();
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LOG(INFO) << "Bit start sync for Galileo E5a satellite " << d_satellite;
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}
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else
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@ -0,0 +1,236 @@
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/*!
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* \file gps_l5_telemetry_decoder_cc.cc
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* \brief Implementation of a NAV message demodulator block based on
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* Kay Borre book MATLAB-based GPS receiver
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* \author Antonio Ramos, 2017. antonio.ramos(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2017 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#include <bitset>
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#include <iostream>
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#include <sstream>
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#include <gnuradio/io_signature.h>
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#include <glog/logging.h>
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#include <boost/lexical_cast.hpp>
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#include "gnss_synchro.h"
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#include "gps_l5_telemetry_decoder_cc.h"
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using google::LogMessage;
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gps_l5_telemetry_decoder_cc_sptr
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gps_l5_make_telemetry_decoder_cc(const Gnss_Satellite & satellite, bool dump)
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{
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return gps_l5_telemetry_decoder_cc_sptr(new gps_l5_telemetry_decoder_cc(satellite, dump));
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}
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gps_l5_telemetry_decoder_cc::gps_l5_telemetry_decoder_cc(
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const Gnss_Satellite & satellite, bool dump) : gr::block("gps_l5_telemetry_decoder_cc",
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gr::io_signature::make(1, 1, sizeof(Gnss_Synchro)),
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gr::io_signature::make(1, 1, sizeof(Gnss_Synchro)))
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{
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// Telemetry Bit transition synchronization port out
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this->message_port_register_out(pmt::mp("preamble_timestamp_s"));
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// Ephemeris data port out
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this->message_port_register_out(pmt::mp("telemetry"));
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// initialize internal vars
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d_dump = dump;
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d_satellite = Gnss_Satellite(satellite.get_system(), satellite.get_PRN());
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DLOG(INFO) << "GPS L5 TELEMETRY PROCESSING: satellite " << d_satellite;
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//set_output_multiple (1);
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d_channel = 0;
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d_flag_valid_word = false;
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d_TOW_at_current_symbol = 0;
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d_TOW_at_Preamble = 0;
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d_state = 0; //initial state
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d_crc_error_count = 0;
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//initialize the CNAV frame decoder (libswiftcnav)
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cnav_msg_decoder_init(&d_cnav_decoder);
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}
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gps_l5_telemetry_decoder_cc::~gps_l5_telemetry_decoder_cc()
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{
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if(d_dump_file.is_open() == true)
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{
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try
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{
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d_dump_file.close();
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}
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catch(const std::exception & ex)
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{
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LOG(WARNING) << "Exception in destructor closing the dump file " << ex.what();
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}
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}
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}
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int gps_l5_telemetry_decoder_cc::general_work (int noutput_items __attribute__((unused)), gr_vector_int &ninput_items __attribute__((unused)),
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gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
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{
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// get pointers on in- and output gnss-synchro objects
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Gnss_Synchro *out = reinterpret_cast<Gnss_Synchro *>(output_items[0]); // Get the output buffer pointer
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const Gnss_Synchro *in = reinterpret_cast<const Gnss_Synchro *>(input_items[0]); // Get the input buffer pointer
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bool flag_new_cnav_frame = false;
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cnav_msg_t msg;
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u32 delay = 0;
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//add the symbol to the decoder
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u8 symbol_clip = static_cast<u8>(in[0].Prompt_I > 0) * 255;
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flag_new_cnav_frame = cnav_msg_decoder_add_symbol(&d_cnav_decoder, symbol_clip, &msg, &delay);
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consume_each(1); //one by one
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// UPDATE GNSS SYNCHRO DATA
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Gnss_Synchro current_synchro_data; //structure to save the synchronization information and send the output object to the next block
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//1. Copy the current tracking output
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current_synchro_data = in[0];
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//2. Add the telemetry decoder information
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//check if new CNAV frame is available
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if (flag_new_cnav_frame == true)
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{
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std::bitset<GPS_L5_CNAV_DATA_PAGE_BITS> raw_bits;
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//Expand packet bits to bitsets. Notice the reverse order of the bits sequence, required by the CNAV message decoder
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for (u32 i = 0; i < GPS_L5_CNAV_DATA_PAGE_BITS ; i++)
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{
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raw_bits[GPS_L5_CNAV_DATA_PAGE_BITS - 1 - i] = ((msg.raw_msg[i/8] >> (7 - i%8)) & 1u);
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}
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d_CNAV_Message.decode_page(raw_bits);
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//Push the new navigation data to the queues
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if (d_CNAV_Message.have_new_ephemeris() == true)
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{
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// get ephemeris object for this SV
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std::shared_ptr<Gps_CNAV_Ephemeris> tmp_obj = std::make_shared<Gps_CNAV_Ephemeris>(d_CNAV_Message.get_ephemeris());
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std::cout << "New GPS CNAV message received: ephemeris from satellite " << d_satellite << std::endl;
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this->message_port_pub(pmt::mp("telemetry"), pmt::make_any(tmp_obj));
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}
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if (d_CNAV_Message.have_new_iono() == true)
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{
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std::shared_ptr<Gps_CNAV_Iono> tmp_obj = std::make_shared<Gps_CNAV_Iono>(d_CNAV_Message.get_iono());
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std::cout << "New GPS CNAV message received: iono model parameters from satellite " << d_satellite << std::endl;
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this->message_port_pub(pmt::mp("telemetry"), pmt::make_any(tmp_obj));
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}
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if (d_CNAV_Message.have_new_utc_model() == true)
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{
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std::shared_ptr<Gps_CNAV_Utc_Model> tmp_obj = std::make_shared<Gps_CNAV_Utc_Model>(d_CNAV_Message.get_utc_model());
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std::cout << "New GPS CNAV message received: UTC model parameters from satellite " << d_satellite << std::endl;
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this->message_port_pub(pmt::mp("telemetry"), pmt::make_any(tmp_obj));
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}
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//update TOW at the preamble instant
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d_TOW_at_Preamble = static_cast<int>(msg.tow);
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//* The time of the last input symbol can be computed from the message ToW and
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//* delay by the formulae:
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//* \code
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//* symbolTime_ms = msg->tow * 6000 + *pdelay * 20
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d_TOW_at_current_symbol = static_cast<double>(msg.tow) * 6.0 + static_cast<double>(delay) * GPS_L5_PERIOD + 6 * GPS_L5_PERIOD;
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d_TOW_at_current_symbol = floor(d_TOW_at_current_symbol * 1000.0) / 1000.0;
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d_flag_valid_word = true;
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}
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else
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{
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d_TOW_at_current_symbol += GPS_L5_PERIOD;
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if (current_synchro_data.Flag_valid_symbol_output == false)
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{
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d_flag_valid_word = false;
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}
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}
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current_synchro_data.TOW_at_current_symbol_s = d_TOW_at_current_symbol;
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current_synchro_data.Flag_valid_word = d_flag_valid_word;
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// if (flag_PLL_180_deg_phase_locked == true)
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// {
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// //correct the accumulated phase for the Costas loop phase shift, if required
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// current_synchro_data.Carrier_phase_rads += GPS_PI;
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// }
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if(d_dump == true)
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{
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// MULTIPLEXED FILE RECORDING - Record results to file
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try
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{
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double tmp_double;
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unsigned long int tmp_ulong_int;
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tmp_double = d_TOW_at_current_symbol;
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d_dump_file.write(reinterpret_cast<char*>(&tmp_double), sizeof(double));
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tmp_ulong_int = current_synchro_data.Tracking_sample_counter;
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d_dump_file.write(reinterpret_cast<char*>(&tmp_ulong_int), sizeof(unsigned long int));
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tmp_double = d_TOW_at_Preamble;
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d_dump_file.write(reinterpret_cast<char*>(&tmp_double), sizeof(double));
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}
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catch (const std::ifstream::failure & e)
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{
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||||
LOG(WARNING) << "Exception writing observables dump file " << e.what();
|
||||
}
|
||||
}
|
||||
|
||||
//3. Make the output (copy the object contents to the GNURadio reserved memory)
|
||||
out[0] = current_synchro_data;
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
void gps_l5_telemetry_decoder_cc::set_satellite(const Gnss_Satellite & satellite)
|
||||
{
|
||||
d_satellite = Gnss_Satellite(satellite.get_system(), satellite.get_PRN());
|
||||
LOG(INFO) << "GPS L5 CNAV telemetry decoder in channel " << this->d_channel << " set to satellite " << d_satellite;
|
||||
}
|
||||
|
||||
|
||||
void gps_l5_telemetry_decoder_cc::set_channel(int channel)
|
||||
{
|
||||
d_channel = channel;
|
||||
LOG(INFO) << "GPS L5 CNAV channel set to " << channel;
|
||||
// ############# ENABLE DATA FILE LOG #################
|
||||
if (d_dump == true)
|
||||
{
|
||||
if (d_dump_file.is_open() == false)
|
||||
{
|
||||
try
|
||||
{
|
||||
d_dump_filename = "telemetry_L5_";
|
||||
d_dump_filename.append(boost::lexical_cast<std::string>(d_channel));
|
||||
d_dump_filename.append(".dat");
|
||||
d_dump_file.exceptions ( std::ifstream::failbit | std::ifstream::badbit );
|
||||
d_dump_file.open(d_dump_filename.c_str(), std::ios::out | std::ios::binary);
|
||||
LOG(INFO) << "Telemetry decoder dump enabled on channel " << d_channel
|
||||
<< " Log file: " << d_dump_filename.c_str();
|
||||
}
|
||||
catch (const std::ifstream::failure &e)
|
||||
{
|
||||
LOG(WARNING) << "channel " << d_channel << " Exception opening trk dump file " << e.what();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,105 @@
|
|||
/*!
|
||||
* \file gps_l5_telemetry_decoder_cc.h
|
||||
* \brief Interface of a CNAV message demodulator block based on
|
||||
* Kay Borre book MATLAB-based GPS receiver
|
||||
* \author Antonio Ramos, 2017. antonio.ramos(at)cttc.es
|
||||
* -------------------------------------------------------------------------
|
||||
*
|
||||
* Copyright (C) 2010-2017 (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_L5_TELEMETRY_DECODER_CC_H
|
||||
#define GNSS_SDR_GPS_L5_TELEMETRY_DECODER_CC_H
|
||||
|
||||
#include <algorithm> // for copy
|
||||
#include <deque>
|
||||
#include <fstream>
|
||||
#include <string>
|
||||
#include <utility> // for pair
|
||||
#include <vector>
|
||||
#include <gnuradio/block.h>
|
||||
#include "gnss_satellite.h"
|
||||
#include "gps_cnav_navigation_message.h"
|
||||
#include "gps_cnav_ephemeris.h"
|
||||
#include "gps_cnav_iono.h"
|
||||
#include "concurrent_queue.h"
|
||||
|
||||
extern "C" {
|
||||
#include "cnav_msg.h"
|
||||
#include "edc.h"
|
||||
#include "bits.h"
|
||||
}
|
||||
|
||||
#include "GPS_L5.h"
|
||||
|
||||
class gps_l5_telemetry_decoder_cc;
|
||||
|
||||
typedef boost::shared_ptr<gps_l5_telemetry_decoder_cc> gps_l5_telemetry_decoder_cc_sptr;
|
||||
|
||||
gps_l5_telemetry_decoder_cc_sptr
|
||||
gps_l5_make_telemetry_decoder_cc(const Gnss_Satellite & satellite, bool dump);
|
||||
|
||||
/*!
|
||||
* \brief This class implements a block that decodes the SBAS integrity and corrections data defined in RTCA MOPS DO-229
|
||||
*
|
||||
*/
|
||||
class gps_l5_telemetry_decoder_cc : public gr::block
|
||||
{
|
||||
public:
|
||||
~gps_l5_telemetry_decoder_cc();
|
||||
void set_satellite(const Gnss_Satellite & satellite); //!< Set satellite PRN
|
||||
void set_channel(int channel); //!< Set receiver's channel
|
||||
|
||||
/*!
|
||||
* \brief This is where all signal processing takes place
|
||||
*/
|
||||
int general_work (int noutput_items, gr_vector_int &ninput_items,
|
||||
gr_vector_const_void_star &input_items, gr_vector_void_star &output_items);
|
||||
|
||||
|
||||
private:
|
||||
friend gps_l5_telemetry_decoder_cc_sptr
|
||||
gps_l5_make_telemetry_decoder_cc(const Gnss_Satellite & satellite, bool dump);
|
||||
gps_l5_telemetry_decoder_cc(const Gnss_Satellite & satellite, bool dump);
|
||||
|
||||
bool d_dump;
|
||||
Gnss_Satellite d_satellite;
|
||||
int d_channel;
|
||||
|
||||
std::string d_dump_filename;
|
||||
std::ofstream d_dump_file;
|
||||
|
||||
cnav_msg_decoder_t d_cnav_decoder;
|
||||
|
||||
int d_state;
|
||||
int d_crc_error_count;
|
||||
|
||||
double d_TOW_at_current_symbol;
|
||||
double d_TOW_at_Preamble;
|
||||
bool d_flag_valid_word;
|
||||
|
||||
Gps_CNAV_Navigation_Message d_CNAV_Message;
|
||||
};
|
||||
|
||||
|
||||
#endif
|
||||
|
|
@ -49,9 +49,11 @@
|
|||
*/
|
||||
/** Viterbi decoder reversed polynomial A */
|
||||
#define GPS_L2C_V27_POLY_A (0x4F) /* 0b01001111 - reversed 0171*/
|
||||
#define GPS_L5_V27_POLY_A (0x4F) /* 0b01001111 - reversed 0171*/
|
||||
|
||||
/** Viterbi decoder reversed polynomial B */
|
||||
#define GPS_L2C_V27_POLY_B (0x6D) /* 0b01101101 - reversed 0133 */
|
||||
|
||||
#define GPS_L5_V27_POLY_B (0x6D) /* 0b01101101 - reversed 0133 */
|
||||
/*
|
||||
* GPS L2C message constants.
|
||||
*/
|
||||
|
|
@ -67,7 +69,7 @@
|
|||
/** GPS LC2 CNAV CRC length in bits */
|
||||
#define GPS_CNAV_MSG_CRC_LENGTH (24)
|
||||
/** GPS L2C CNAV message payload length in bits */
|
||||
#define GPS_CNAV_MSG_DATA_LENGTH (GPS_CNAV_MSG_LENGTH-GPS_CNAV_MSG_CRC_LENGTH)
|
||||
#define GPS_CNAV_MSG_DATA_LENGTH (GPS_CNAV_MSG_LENGTH - GPS_CNAV_MSG_CRC_LENGTH)
|
||||
/** GPS L2C CNAV message lock detector threshold */
|
||||
#define GPS_CNAV_LOCK_MAX_CRC_FAILS (10)
|
||||
|
||||
|
|
|
|||
|
|
@ -49,12 +49,16 @@
|
|||
|
||||
/** Size of the Viterbi decoder history. */
|
||||
#define GPS_L2_V27_HISTORY_LENGTH_BITS 64
|
||||
#define GPS_L5_V27_HISTORY_LENGTH_BITS 64
|
||||
/** Bits to accumulate before decoding starts. */
|
||||
#define GPS_L2C_V27_INIT_BITS (32)
|
||||
#define GPS_L5_V27_INIT_BITS (32)
|
||||
/** Bits to decode at a time. */
|
||||
#define GPS_L2C_V27_DECODE_BITS (32)
|
||||
#define GPS_L5_V27_DECODE_BITS (32)
|
||||
/** Bits in decoder tail. We ignore them. */
|
||||
#define GPS_L2C_V27_DELAY_BITS (32)
|
||||
#define GPS_L5_V27_DELAY_BITS (32)
|
||||
/**
|
||||
* GPS CNAV message container.
|
||||
*
|
||||
|
|
@ -69,6 +73,15 @@ typedef struct
|
|||
u8 raw_msg[GPS_L2C_V27_DECODE_BITS + GPS_L2C_V27_DELAY_BITS]; /**< RAW MSG for GNSS-SDR */
|
||||
} cnav_msg_t;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
u8 prn; /**< SV PRN. 0..31 */
|
||||
u8 msg_id; /**< Message id. 0..31 */
|
||||
u32 tow; /**< GPS ToW in 6-second units. Multiply to 6 to get seconds. */
|
||||
bool alert; /**< CNAV message alert flag */
|
||||
u8 raw_msg[GPS_L5_V27_DECODE_BITS + GPS_L5_V27_DELAY_BITS]; /**< RAW MSG for GNSS-SDR */
|
||||
} cnav_L5_msg_t;
|
||||
|
||||
/**
|
||||
* GPS CNAV decoder component.
|
||||
* This component controls symbol decoding string.
|
||||
|
|
@ -96,6 +109,27 @@ typedef struct {
|
|||
* do not produce output. */
|
||||
} cnav_v27_part_t;
|
||||
|
||||
typedef struct {
|
||||
v27_t dec; /**< Viterbi block decoder object */
|
||||
v27_decision_t decisions[GPS_L5_V27_HISTORY_LENGTH_BITS];
|
||||
/**< Decision graph */
|
||||
unsigned char symbols[(GPS_L5_V27_INIT_BITS + GPS_L5_V27_DECODE_BITS) * 2];
|
||||
/**< Symbol buffer */
|
||||
size_t n_symbols; /**< Count of symbols in the symbol buffer */
|
||||
unsigned char decoded[GPS_L5_V27_DECODE_BITS + GPS_L5_V27_DELAY_BITS];
|
||||
/**< Decode buffer */
|
||||
size_t n_decoded; /**< Number of bits in the decode buffer */
|
||||
bool preamble_seen; /**< When true, the decode buffer is aligned on
|
||||
* preamble. */
|
||||
bool invert; /**< When true, indicates the bits are inverted */
|
||||
bool message_lock; /**< When true, indicates the message boundary
|
||||
* is found. */
|
||||
bool crc_ok; /**< Flag that the last message had good CRC */
|
||||
size_t n_crc_fail; /**< Counter for CRC failures */
|
||||
bool init; /**< Initial state flag. When true, initial bits
|
||||
* do not produce output. */
|
||||
} cnav_L5_v27_part_t;
|
||||
|
||||
/**
|
||||
* GPS CNAV message lock and decoder object.
|
||||
*
|
||||
|
|
|
|||
|
|
@ -88,6 +88,7 @@
|
|||
#include "gps_l2_m_dll_pll_tracking.h"
|
||||
#include "gps_l1_ca_telemetry_decoder.h"
|
||||
#include "gps_l2c_telemetry_decoder.h"
|
||||
#include "gps_l5_telemetry_decoder.h"
|
||||
#include "galileo_e1b_telemetry_decoder.h"
|
||||
#include "galileo_e5a_telemetry_decoder.h"
|
||||
#include "sbas_l1_telemetry_decoder.h"
|
||||
|
|
@ -1094,6 +1095,12 @@ std::unique_ptr<GNSSBlockInterface> GNSSBlockFactory::GetBlock(
|
|||
out_streams));
|
||||
block = std::move(block_);
|
||||
}
|
||||
else if (implementation.compare("GPS_L5_Telemetry_Decoder") == 0)
|
||||
{
|
||||
std::unique_ptr<GNSSBlockInterface> block_(new GpsL5TelemetryDecoder(configuration.get(), role, in_streams,
|
||||
out_streams));
|
||||
block = std::move(block_);
|
||||
}
|
||||
else if (implementation.compare("Galileo_E1B_Telemetry_Decoder") == 0)
|
||||
{
|
||||
std::unique_ptr<GNSSBlockInterface> block_(new GalileoE1BTelemetryDecoder(configuration.get(), role, in_streams,
|
||||
|
|
@ -1368,6 +1375,12 @@ std::unique_ptr<TelemetryDecoderInterface> GNSSBlockFactory::GetTlmBlock(
|
|||
out_streams));
|
||||
block = std::move(block_);
|
||||
}
|
||||
else if (implementation.compare("GPS_L5_Telemetry_Decoder") == 0)
|
||||
{
|
||||
std::unique_ptr<TelemetryDecoderInterface> block_(new GpsL5TelemetryDecoder(configuration.get(), role, in_streams,
|
||||
out_streams));
|
||||
block = std::move(block_);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Log fatal. This causes execution to stop.
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user