GPSCNavTimeOffset.cpp

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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
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//  any later version.
//
//  The GNSSTk is distributed in the hope that it will be useful,
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//  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.
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//==============================================================================
#include "GPSCNavTimeOffset.hpp"
#include "GPSWeekSecond.hpp"
 
using namespace std;
 
static const unsigned maxDN = 7;
static const double maxtot = 604784.0;
static const double mintot = 0;
 
namespace gnsstk
{
   GPSCNavTimeOffset ::
   GPSCNavTimeOffset()
   {
      src = TimeSystem::GPS;
   }
 
 
   bool GPSCNavTimeOffset ::
   validate() const
   {
         // see IS-GPS-200
         // DN is defined in the ICD as being 1-7 but we also include
         // the value 0 as valid because we won't always have anything
         // else.
      return ((dn <= maxDN) && (tot <= maxtot) && (tot >= mintot));
   }
 
 
   CommonTime GPSCNavTimeOffset ::
   getUserTime() const
   {
      if (signal.nav == NavType::GPSCNAVL2)
         return timeStamp + 12.0;
      return timeStamp + 6.0;
   }
}