#pragma ident "$Id: constants.hpp 185 2006-10-05 18:21:39Z btolman $" //============================================================================ // // This file is part of GPSTk, the GPS Toolkit. // // The GPSTk 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 2.1 of the License, or // any later version. // // The GPSTk 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 GPSTk; if not, write to the Free Software Foundation, // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // Copyright 2004, The University of Texas at Austin // //============================================================================ //============================================================================ // //This software 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. // //============================================================================= /** * @file constants.hpp * Include file for miscellaneous constants for program DDBase. */ #ifndef DDBASE_CONSTANTS_INCLUDE #define DDBASE_CONSTANTS_INCLUDE //------------------------------------------------------------------------------------ // GPSTk #include "icd_200_constants.hpp" //------------------------------------------------------------------------------------ const double CFF=gpstk::C_GPS_M/gpstk::OSC_FREQ; const double F1=gpstk::L1_MULT; // 154.0; const double F2=gpstk::L2_MULT; // 120.0; const double f12=F1*F1; const double f22=F2*F2; /// wavelength L1 const double wl1=CFF/F1; /// wavelength L2 const double wl2=CFF/F2; /// Multiplier for wide lane range(m) : WLR = wl1r * P1 + wl2r * P2 const double wl1r=F1/(F1+F2); const double wl2r=F2/(F1+F2); /// Multiplier for wide lane phase(m) : WLP = wl1p * L1 + wl2p * L2 (L1,L2 in meters) const double wl1p=F1/(F1-F2); const double wl2p=-F2/(F1-F2); /// Multiplier for iono-free range(m) : IFR = if1r * P1 + if2r * P2 const double if1r=f12/(f12-f22); const double if2r=-f22/(f12-f22); /// Multiplier for iono-free phase(m) : IFP = if1p * L1 + if2p * L2 (L1,L2 in meters) const double if1p=f12/(f12-f22); const double if2p=-f22/(f12-f22); /// Multiplier for geometry-free range(m) : GFR = gf1p * P1 + ff2p * P2 const double gf1r=-1; const double gf2r=1; /// Multiplier for geo-free phase(m) : GFP = gf1p * L1 + gf2p * L2 (L1,L2 in meters) const double gf1p=wl1; const double gf2p=-wl2; const double beta=f12/f22; const double alpha=f12/f22 - 1.0; /// Frequency at L1 (Hz) const double FL1=F1*10.23e6; // Hz /// Conversion factor: TEC Units per meter const double TECUperM=FL1*FL1*1.e-16/(alpha*40.28); #endif //------------------------------------------------------------------------------------
