fr.cnes.sirius.patrius.propagation.analytical.tle

Class LevenbergMarquardtOrbitConverter

java.lang.Object

fr.cnes.sirius.patrius.propagation.analytical.tle.AbstractTLEFitter

fr.cnes.sirius.patrius.propagation.analytical.tle.LevenbergMarquardtOrbitConverter

public class LevenbergMarquardtOrbitConverter
extends AbstractTLEFitter

Orbit converter for Two-Lines Elements using differential algorithm.

Since:

6.0

Author:

Rocca

Nested Class Summary

Nested classes/interfaces inherited from class fr.cnes.sirius.patrius.propagation.analytical.tle.AbstractTLEFitter

AbstractTLEFitter.ResidualsFunction

Constructor Summary

Constructors

Constructor and Description
LevenbergMarquardtOrbitConverter(int maxIterationsIn, int satelliteNumber, char classification, int launchYear, int launchNumber, String launchPiece, int elementNumber, int revolutionNumberAtEpoch) Simple constructor.

Method Summary

Modifier and Type	Method and Description
protected double[]	fit(double[] initial) Find the TLE elements that minimize the mean square error for a sample of states.

Methods inherited from class fr.cnes.sirius.patrius.propagation.analytical.tle.AbstractTLEFitter

getPositionTolerance, getPVFunction, getResiduals, getRMS, getRMS, getTarget, getTLE, getTLE, getWeight, toTLE

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LevenbergMarquardtOrbitConverter

public LevenbergMarquardtOrbitConverter(int maxIterationsIn,
                                        int satelliteNumber,
                                        char classification,
                                        int launchYear,
                                        int launchNumber,
                                        String launchPiece,
                                        int elementNumber,
                                        int revolutionNumberAtEpoch)

Simple constructor.

Parameters:

maxIterationsIn - maximum number of iterations for fitting

satelliteNumber - satellite number

classification - classification (U for unclassified)

launchYear - launch year (all digits)

launchNumber - launch number

launchPiece - launch piece

elementNumber - element number

revolutionNumberAtEpoch - revolution number at epoch

Method Detail

fit

protected double[] fit(double[] initial)
                throws PatriusException

Find the TLE elements that minimize the mean square error for a sample of states.

Specified by:

fit in class AbstractTLEFitter

Parameters:

initial - initial estimation parameters (position, velocity and B* if estimated)

Returns:

fitted parameters

Throws:

PatriusException - if TLE cannot be computed