mirror of https://github.com/gnss-sdr/gnss-sdr
129 lines
4.6 KiB
C++
129 lines
4.6 KiB
C++
/*!
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* \file gps_cnav_navigation_message.h
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* \brief Interface of a GPS CNAV Data message decoder
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* \author Javier Arribas, 2015. jarribas(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2019 (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 <https://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_GPS_CNAV_NAVIGATION_MESSAGE_H_
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#define GNSS_SDR_GPS_CNAV_NAVIGATION_MESSAGE_H_
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#include "GPS_CNAV.h"
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#include "gps_cnav_ephemeris.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 <bitset>
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#include <cstdint>
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#include <map>
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#include <string>
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#include <utility>
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#include <vector>
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/*!
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* \brief This class decodes a GPS CNAV Data message as described in IS-GPS-200K
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*
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* See https://www.gps.gov/technical/icwg/IS-GPS-200K.pdf Appendix III
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*/
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class Gps_CNAV_Navigation_Message
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{
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public:
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/*!
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* Default constructor
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*/
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Gps_CNAV_Navigation_Message();
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int32_t d_TOW;
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bool b_flag_ephemeris_1;
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bool b_flag_ephemeris_2;
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bool b_flag_iono_valid; //!< If set, it indicates that the ionospheric parameters are filled and are not yet read by the get_iono
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bool b_flag_utc_valid; //!< If set, it indicates that the utc parameters are filled and are not yet read by the get_utc_model
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std::map<int32_t, std::string> satelliteBlock; //!< Map that stores to which block the PRN belongs https://www.navcen.uscg.gov/?Do=constellationStatus
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// satellite positions
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double d_satpos_X; //!< Earth-fixed coordinate x of the satellite [m]. Intersection of the IERS Reference Meridian (IRM) and the plane passing through the origin and normal to the Z-axis.
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double d_satpos_Y; //!< Earth-fixed coordinate y of the satellite [m]. Completes a right-handed, Earth-Centered, Earth-Fixed orthogonal coordinate system.
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double d_satpos_Z; //!< Earth-fixed coordinate z of the satellite [m]. The direction of the IERS (International Earth Rotation and Reference Systems Service) Reference Pole (IRP).
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// satellite identification info
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int32_t i_channel_ID;
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uint32_t i_satellite_PRN;
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// Satellite velocity
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double d_satvel_X; //!< Earth-fixed velocity coordinate x of the satellite [m]
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double d_satvel_Y; //!< Earth-fixed velocity coordinate y of the satellite [m]
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double d_satvel_Z; //!< Earth-fixed velocity coordinate z of the satellite [m]
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// public functions
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void reset();
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void decode_page(std::bitset<GPS_CNAV_DATA_PAGE_BITS> data_bits);
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/*!
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* \brief Obtain a GPS SV Ephemeris class filled with current SV data
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*/
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Gps_CNAV_Ephemeris get_ephemeris();
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/*!
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* \brief Check if we have a new iono record stored in the GPS ephemeris class
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*/
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bool have_new_iono();
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/*!
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* \brief Obtain a GPS ionospheric correction parameters class filled with current SV data
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*/
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Gps_CNAV_Iono get_iono();
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/*!
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* \brief Obtain a GPS UTC model parameters class filled with current SV data
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*/
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Gps_CNAV_Utc_Model get_utc_model();
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/*!
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* \briefCheck if we have a new GPS UTC model record stored in the GPS ephemeris class
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*/
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bool have_new_utc_model();
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/*!
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* \brief Check if we have a new ephemeris stored in the GPS ephemeris class
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*/
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bool have_new_ephemeris();
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private:
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uint64_t read_navigation_unsigned(std::bitset<GPS_CNAV_DATA_PAGE_BITS> bits, const std::vector<std::pair<int32_t, int32_t>>& parameter);
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int64_t read_navigation_signed(std::bitset<GPS_CNAV_DATA_PAGE_BITS> bits, const std::vector<std::pair<int32_t, int32_t>>& parameter);
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bool read_navigation_bool(std::bitset<GPS_CNAV_DATA_PAGE_BITS> bits, const std::vector<std::pair<int32_t, int32_t>>& parameter);
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Gps_CNAV_Ephemeris ephemeris_record;
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Gps_CNAV_Iono iono_record;
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Gps_CNAV_Utc_Model utc_model_record;
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};
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#endif
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