PNBGLOFNavDataFactory.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
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//  You should have received a copy of the GNU Lesser General Public
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//  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
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//==============================================================================
#ifndef GNSSTK_PNBGLOFNAVDATAFACTORY_HPP
#define GNSSTK_PNBGLOFNAVDATAFACTORY_HPP
 
#include "PNBNavDataFactory.hpp"
#include "BasicTimeSystemConverter.hpp"
#include "ValidType.hpp"
 
namespace gnsstk
{
 
 
   class PNBGLOFNavDataFactory : public PNBNavDataFactory
   {
   public:
      PNBGLOFNavDataFactory();
 
      bool addData(const PackedNavBitsPtr& navIn, NavDataPtrList& navOut,
                   double cadence = -1)
         override;
 
      void resetState() override;
 
      bool processEph(unsigned long stringID, const PackedNavBitsPtr& navIn,
                      NavDataPtrList& navOut);
 
      bool processAlm(unsigned long stringID, const PackedNavBitsPtr& navIn,
                      NavDataPtrList& navOut);
 
      bool processAlmOrb(const NavSatelliteID& key, unsigned almIdx,
                         NavDataPtrList& navOut);
 
      bool processTime(const PackedNavBitsPtr& navIn, NavDataPtrList& navOut);
 
      bool processTimeUT1(const PackedNavBitsPtr& navIn,
                          NavDataPtrList& navOut);
 
      unsigned getFrameNum(const CommonTime& xmitTime);
 
      inline static bool validSize(const PackedNavBitsPtr& navIn)
      {
         size_t sz = navIn->getNumBits();
         return ((sz == 85) || (sz == 96));
      }
 
   protected:
      class TimeMeta
      {
      public:
         operator NavDataPtr() const;
         void setNT(unsigned v);
         void setNA(unsigned v);
         bool isValid();
         vdouble tauc; 
         vdouble B1;   
         vdouble B2;   
         vuint KP;     
      private:
            // keep these private so they can't be changed without
            // resetting B1/B2, particularly B2 which depends on the
            // values of NT and NA.
         vuint NT;     
         vuint NA;     
      };
      std::map<NavSatelliteID, TimeMeta> timeAcc;
      std::map<NavSatelliteID, std::vector<PackedNavBitsPtr> > ephAcc;
      std::map<NavSatelliteID, std::vector<PackedNavBitsPtr> > almAcc;
 
         // Some or all of these are likely going to get put into a
         // time offset class.
 
      BasicTimeSystemConverter btsc;
      CommonTime almDOY;
 
      bool pendingAlms;
   }; // class PNBGLOFNavDataFactory
 
 
} // namespace gnsstk
 
#endif // GNSSTK_PNBGLOFNAVDATAFACTORY_HPP