EOPPrediction.hpp

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//==============================================================================
//
//  This file is part of GNSSTk, the ARL:UT GNSS Toolkit.
//
//  The GNSSTk is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published
//  by the Free Software Foundation; either version 3.0 of the License, or
//  any later version.
//
//  The GNSSTk 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 Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with GNSSTk; if not, write to the Free Software Foundation,
//  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin.
//  Copyright 2004-2022, The Board of Regents of The University of Texas System
//
//==============================================================================
 
//==============================================================================
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin, under contract to an agency or agencies
//  within the U.S. Department of Defense. The U.S. Government retains all
//  rights to use, duplicate, distribute, disclose, or release this software.
//
//  Pursuant to DoD Directive 523024
//
//  DISTRIBUTION STATEMENT A: This software has been approved for public
//                            release, distribution is unlimited.
//
//==============================================================================
 
#ifndef CLASS_EOPPREDICTION_INCLUDE
#define CLASS_EOPPREDICTION_INCLUDE
 
//------------------------------------------------------------------------------------
// system includes
#include <iomanip>
#include <iostream>
#include <string>
// GNSSTk
#include "EarthOrientation.hpp"
#include "Exception.hpp"
 
//------------------------------------------------------------------------------------
namespace gnsstk
{
 
   class EOPPrediction
   {
   private:
      double tv;
      double ta, tb;
      double A, B, C1, C2, D1, D2, E, F, G1, G2, H1, H2, I, J, K1, K2, K3, K4,
         L1, L2, L3, L4;
      double P1, P2, Q1, Q2, R1, R2, R3, R4;
 
   public:
      int TAIUTC;
      int SerialNo;
      std::string Info;
 
      int getValidTime() const { return int(tv + 0.5); }
 
      int loadFile(const std::string& filename);
 
      static int getSerialNumber(int mjd);
 
      EarthOrientation computeEOP(int& imjd) const
      {
         double dmjd(static_cast<double>(imjd));
         return computeEOP(dmjd);
      }
 
      EarthOrientation computeEOP(double& mjd) const;
 
      friend std::ostream& operator<<(std::ostream& os,
                                      const EOPPrediction& eopp);
 
   }; // end class EOPPrediction
 
} // end namespace gnsstk
 
#endif // CLASS_EOPPREDICTION_INCLUDE