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/***********************************************/
/**
* @file simulateGradiometer.cpp
*
* @brief Simulate error free gradiometer data.
*
* @author Torsten Mayer-Guerr
* @date 2008-08-15
*/
/***********************************************/
// Latex documentation
#define DOCSTRING docstring
static const char *docstring = R"(
This program simulates error free \file{gradiometer data}{instrument} along a satellite's orbit.
The orientation of the full tensor gradiometer is given by \configFile{inputfileStarCamera}{instrument}
otherwise the celestial reference frame (CRF) is used.
The gravity gradients are given by \configClass{gravityfield}{gravityfieldType} and
\configClass{tides}{tidesType}.
)";
/***********************************************/
#include "programs/program.h"
#include "files/fileInstrument.h"
#include "classes/earthRotation/earthRotation.h"
#include "classes/ephemerides/ephemerides.h"
#include "classes/tides/tides.h"
#include "classes/gravityfield/gravityfield.h"
/***********************************************/
/** @brief Simulate error free gradiometer data.
* @ingroup programsGroup */
class SimulateGradiometer
{
public:
void run(Config &config, Parallel::CommunicatorPtr comm);
};
GROOPS_REGISTER_PROGRAM(SimulateGradiometer, PARALLEL, "simulate error free gradiometer data", Simulation, Instrument)
/***********************************************/
void SimulateGradiometer::run(Config &config, Parallel::CommunicatorPtr comm)
{
try
{
FileName fileNameGradiometer;
FileName orbitName, starCameraName;
EarthRotationPtr earthRotation;
EphemeridesPtr ephemerides;
GravityfieldPtr gravityfield;
TidesPtr tides;
readConfig(config, "outputfileGradiometer", fileNameGradiometer, Config::MUSTSET, "", "");
readConfig(config, "inputfileOrbit", orbitName, Config::MUSTSET, "", "");
readConfig(config, "inputfileStarCamera", starCameraName, Config::OPTIONAL, "", "");
readConfig(config, "earthRotation", earthRotation, Config::MUSTSET, "", "");
readConfig(config, "ephemerides", ephemerides, Config::OPTIONAL, "jpl", "");
readConfig(config, "gravityfield", gravityfield, Config::DEFAULT, "", "");
readConfig(config, "tides", tides, Config::DEFAULT, "", "");
if(isCreateSchema(config)) return;
// open and test instrument files
// ------------------------------
InstrumentFile orbitFile(orbitName);
InstrumentFile starCameraFile(starCameraName);
InstrumentFile::checkArcCount({orbitFile, starCameraFile});
logStatus<<"computing gravity field"<<Log::endl;
std::vector<Arc> arcList(orbitFile.arcCount());
Parallel::forEach(arcList, [&](UInt arcNo)
{
OrbitArc orbit = orbitFile.readArc(arcNo);
StarCameraArc starCamera = starCameraFile.readArc(arcNo);
Arc::checkSynchronized({orbit, starCamera});
GradiometerArc gradiometer;
for(UInt k=0; k<orbit.size(); k++)
{
Rotary3d rotSat;
if(starCamera.size())
rotSat = starCamera.at(k).rotary;
const Time time = orbit.at(k).time;
const Rotary3d rotEarth = earthRotation->rotaryMatrix(time);
const Vector3d posEarth = rotEarth.rotate(orbit.at(k).position);
const Tensor3d tns = gravityfield->gravityGradient(time, posEarth)
+ tides->gradient(time, posEarth, rotEarth, earthRotation, ephemerides);
GradiometerEpoch epoch;
epoch.time = time;
epoch.gravityGradient = rotSat.inverseRotate(rotEarth.inverseRotate(tns));
gradiometer.push_back(epoch);
}
return gradiometer;
}, comm);
if(Parallel::isMaster(comm))
{
logStatus<<"write gradiometer file <"<<fileNameGradiometer<<">"<<Log::endl;
InstrumentFile::write(fileNameGradiometer, arcList);
}
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
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