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/***********************************************/
/**
* @file champ2Orbit.cpp
*
* @brief read champ PSO orbits from the special CHORB format
*
* @author Norbert Zehentner
* @date 2011-10-04
*
*/
/***********************************************/
// Latex documentation
#define DOCSTRING docstring
static const char *docstring = R"(
This program reads in CHAMP precise science orbits in the special CHORB format.
A description of the format can be found under: \url{http://op.gfz-potsdam.de/champ/docs_CHAMP/CH-GFZ-FD-002.pdf}
)";
/***********************************************/
#include "programs/program.h"
#include "base/string.h"
#include "files/fileInstrument.h"
#include "classes/earthRotation/earthRotation.h"
/***** CLASS ***********************************/
/** @brief read champ PSO orbits from the special CHORB format
* @ingroup programsConversionGroup */
class Champ2Orbit
{
public:
void run(Config &config, Parallel::CommunicatorPtr comm);
};
GROOPS_REGISTER_PROGRAM(Champ2Orbit, SINGLEPROCESS, "read champ PSO orbits from the special CHORB format", Conversion, Orbit, Instrument)
/***********************************************/
void Champ2Orbit::run(Config &config, Parallel::CommunicatorPtr /*comm*/)
{
try
{
FileName fileNameOrbit;
std::vector<FileName> fileNamesInput;
EarthRotationPtr earthRotation;
readConfig(config, "outputfileOrbit", fileNameOrbit, Config::MUSTSET, "", "");
readConfig(config, "earthRotation", earthRotation, Config::OPTIONAL, "file", "");
readConfig(config, "inputfile", fileNamesInput, Config::MUSTSET, "", "");
if(isCreateSchema(config)) return;
OrbitArc arc;
for(auto &fileName : fileNamesInput)
{
logStatus<<"read file <"<<fileName<<">"<<Log::endl;
InFile file(fileName);
std::string line;
while(std::getline(file, line))
if(String::startsWith(line, "ORBIT"))
break;
while(std::getline(file, line))
{
OrbitEpoch epoch;
UInt day = String::toInt(line.substr(0, 6));
Double ms = String::toDouble(line.substr(6, 11));
epoch.time = timeTT2GPS(mjd2time(J2000+0.1*day) + seconds2time(1e-6*ms));
epoch.position.x() = 1e-3*String::toDouble(line.substr(17, 12));
epoch.position.y() = 1e-3*String::toDouble(line.substr(29, 12));
epoch.position.z() = 1e-3*String::toDouble(line.substr(41, 12));
epoch.velocity.x() = 1e-7*String::toDouble(line.substr(53, 12));
epoch.velocity.y() = 1e-7*String::toDouble(line.substr(65, 12));
epoch.velocity.z() = 1e-7*String::toDouble(line.substr(77, 12));
arc.push_back(epoch);
}
}
if(earthRotation)
{
logStatus<<"rotation from TRF to CRF"<<Log::endl;
Single::forEach(arc.size(), [&](UInt i)
{
const Rotary3d rotation = inverse(earthRotation->rotaryMatrix(arc.at(i).time));
arc.at(i).position = rotation.rotate(arc.at(i).position);
if(arc.at(i).velocity.r() > 0)
arc.at(i).velocity = rotation.rotate(arc.at(i).velocity) + crossProduct(earthRotation->rotaryAxis(arc.at(i).time), arc.at(i).position);
});
}
if(!fileNameOrbit.empty())
{
logStatus<<"write orbit data to file <"<<fileNameOrbit<<">"<<Log::endl;
InstrumentFile::write(fileNameOrbit, arc);
Arc::printStatistics(arc);
}
}
catch(std::exception &e)
{
GROOPS_RETHROW(e)
}
}
/***********************************************/
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