gnss-sdr/src/core/system_parameters/gps_cnav_utc_model.h

92 lines
3.6 KiB
C++

/*!
* \file gps_utc_model.h
* \brief Interface of a GPS UTC MODEL storage
* \author Javier Arribas, 2013. jarribas(at)cttc.es
*
* -------------------------------------------------------------------------
*
* 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_CNAV_UTC_MODEL_H_
#define GNSS_SDR_GPS_CNAV_UTC_MODEL_H_
#include "boost/assign.hpp"
#include <boost/serialization/nvp.hpp>
#include <iostream>
/*!
* \brief This class is a storage for the GPS UTC MODEL data as described in in IS-GPS-200H
*
* See http://www.gps.gov/technical/icwg/IS-GPS-200H.pdf Appendix III
*/
class Gps_CNAV_Utc_Model
{
public:
bool valid;
// UTC parameters
double d_A2; //!< 2nd order term of a model that relates GPS and UTC time (ref. 20.3.3.5.2.4 IS-GPS-200H) [s/s]
double d_A1; //!< 1st order term of a model that relates GPS and UTC time (ref. 20.3.3.5.2.4 IS-GPS-200H) [s/s]
double d_A0; //!< Constant of a model that relates GPS and UTC time (ref. 20.3.3.5.2.4 IS-GPS-200H) [s]
double d_t_OT; //!< Reference time for UTC data (reference 20.3.4.5 and 20.3.3.5.2.4 IS-GPS-200H) [s]
int i_WN_T; //!< UTC reference week number [weeks]
double d_DeltaT_LS; //!< delta time due to leap seconds [s]. Number of leap seconds since 6-Jan-1980 as transmitted by the GPS almanac.
int i_WN_LSF; //!< Week number at the end of which the leap second becomes effective [weeks]
int i_DN; //!< Day number (DN) at the end of which the leap second becomes effective [days]
double d_DeltaT_LSF; //!< Scheduled future or recent past (relative to NAV message upload) value of the delta time due to leap seconds [s]
/*!
* Default constructor
*/
Gps_CNAV_Utc_Model();
/*!
* \brief Computes the Coordinated Universal Time (UTC) and
* returns it in [s] (IS-GPS-200E, 20.3.3.5.2.4 + 30.3.3.6.2)
*/
double utc_time(double gpstime_corrected, int i_GPS_week);
template<class Archive>
/*
* \brief Serialize is a boost standard method to be called by the boost XML serialization. Here is used to save the ephemeris data on disk file.
*/
inline void serialize(Archive& archive, const unsigned int version)
{
using boost::serialization::make_nvp;
if(version){};
archive & make_nvp("valid",valid);
archive & make_nvp("d_A1",d_A1);
archive & make_nvp("d_A0",d_A0);
archive & make_nvp("d_t_OT",d_t_OT);
archive & make_nvp("i_WN_T",i_WN_T);
archive & make_nvp("d_DeltaT_LS",d_DeltaT_LS);
archive & make_nvp("i_WN_LSF",i_WN_LSF);
archive & make_nvp("i_DN",i_DN);
archive & make_nvp("d_DeltaT_LSF",d_DeltaT_LSF);
}
};
#endif