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/***********************************************/
/**
* @file orbit2Groundtracks.cpp
*
* @brief Groundtracks of a satellite as gridded data.
*
* @author Torsten Mayer-Guerr
* @date 2003-05-21
*
*/
/***********************************************/
// Latex documentation
#define DOCSTRING docstring
static const char *docstring = R"(
This program write \file{satellites positions}{instrument} as \file{gridded data}{griddedData}
(\config{outputfileTrackGriddedData}) in a terrestrial reference frame. The points are expressed as ellipsoidal coordinates
(longitude, latitude, height) based on a reference ellipsoid with parameters \config{R} and
\config{inverseFlattening}. The orbit data are given in the celestial frame so \configClass{earthRotation}{earthRotationType}
is needed to transform the data into the terrestrial frame.
The data of \configFile{inputfileInstrument}{instrument} are appended as values to each point.
)";
/***********************************************/
#include "programs/program.h"
#include "files/fileInstrument.h"
#include "files/fileGriddedData.h"
#include "classes/earthRotation/earthRotation.h"
/***** CLASS ***********************************/
/** @brief Groundtracks of a satellite as gridded data.
* @ingroup programsGroup */
class Orbit2Groundtracks
{
public:
void run(Config &config, Parallel::CommunicatorPtr comm);
};
GROOPS_REGISTER_PROGRAM(Orbit2Groundtracks, SINGLEPROCESS, "groundtracks of a satellite as gridded data.", Orbit, Instrument, Grid)
GROOPS_RENAMED_PROGRAM(ArcGroundtracks, Orbit2Groundtracks, date2time(2020, 05, 25))
/***********************************************/
void Orbit2Groundtracks::run(Config &config, Parallel::CommunicatorPtr /*comm*/)
{
try
{
FileName fileNameOut, fileNameOrbit;
std::vector<FileName> fileNamesInstrument;
EarthRotationPtr earthRotation;
Double a, f;
readConfig(config, "outputfileGriddedData", fileNameOut, Config::MUSTSET, "", "positions as gridded data");
readConfig(config, "inputfileOrbit", fileNameOrbit, Config::MUSTSET, "", "");
readConfig(config, "inputfileInstrument", fileNamesInstrument, Config::OPTIONAL, "", "values at grid points");
readConfig(config, "earthRotation", earthRotation, Config::MUSTSET, "", "transformation from CRF to TRF");
readConfig(config, "R", a, Config::DEFAULT, STRING_DEFAULT_GRS80_a, "reference radius for ellipsoidal coordinates");
readConfig(config, "inverseFlattening", f, Config::DEFAULT, STRING_DEFAULT_GRS80_f, "reference flattening for ellipsoidal coordinates");
if(isCreateSchema(config)) return;
// positions
// ---------
logStatus<<"read orbit file <"<<fileNameOrbit<<">"<<Log::endl;
OrbitArc orbit = InstrumentFile::read(fileNameOrbit);
std::vector<Vector3d> points;
for(UInt i=0; i<orbit.size(); i++)
points.push_back(earthRotation->rotaryMatrix(orbit.at(i).time).rotate(orbit.at(i).position));
// values
// ------
std::vector<std::vector<Double>> values;
for(auto &fileName : fileNamesInstrument)
{
logStatus<<"read instrument file <"<<fileName<<">"<<Log::endl;
Arc arc = InstrumentFile::read(fileName);
Arc::checkSynchronized({arc, orbit});
const Matrix A = arc.matrix();
for(UInt k=1; k<A.columns(); k++)
values.push_back(Vector(A.column(k)));
}
// write gridded data
// ------------------
logStatus<<"write gridded data <"<<fileNameOut<<">"<<Log::endl;
writeFileGriddedData(fileNameOut, GriddedData(Ellipsoid(a,f), points, {}, values));
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
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