Package org.orekit.propagation.analytical.tle.generation

Class FixedPointTleGenerationAlgorithm

java.lang.Object

org.orekit.orbits.AbstractOrbitalParameterFactory<TLE>

org.orekit.propagation.analytical.tle.generation.TleGenerationAlgorithm

org.orekit.propagation.analytical.tle.generation.FixedPointTleGenerationAlgorithm

All Implemented Interfaces:

Cloneable, OrbitalParameterFactory<TLE>

public class FixedPointTleGenerationAlgorithm
extends TleGenerationAlgorithm

Fixed Point method to reverse SGP4 and SDP4 propagation algorithm and generate a usable TLE from a spacecraft state.

Using this algorithm, the B* value is not computed. In other words, the B* value from the template TLE is set to the generated one.

Since:

12.0

Author:

Thomas Paulet, Bryan Cazabonne

Field Summary

Fields

Modifier and Type	Field	Description
static final double	EPSILON_DEFAULT	Default value for epsilon.
static final int	MAX_ITERATIONS_DEFAULT	Default value for maxIterations.
static final double	SCALE_DEFAULT	Default value for scale.

Fields inherited from class org.orekit.propagation.analytical.tle.generation.TleGenerationAlgorithm

B_STAR, B_STAR_SCALE, ECCENTRICITY, INCLINATION, MEAN_ANOM, MEAN_MOTION, PERIAPSIS_ARGUMENT, RAAN

Constructor Summary

Constructors

Constructor	Description
FixedPointTleGenerationAlgorithm(TLE templateTLE)	Default constructor.
FixedPointTleGenerationAlgorithm(TLE templateTLE, double epsilon, int maxIterations, double scale)	Constructor.
FixedPointTleGenerationAlgorithm(TLE templateTLE, double epsilon, int maxIterations, double scale, TimeScale utc, Frame teme)	Constructor.

Method Summary

Methods inherited from class org.orekit.propagation.analytical.tle.generation.TleGenerationAlgorithm

clone, createFromDrivers, generate, generate, getBStar, getConverter, getJacobianWrtParameters, getJacobianWrtParameters, getNonKeplerianParametersDrivers, getTemplateTLE, toArray

Methods inherited from class org.orekit.orbits.AbstractOrbitalParameterFactory

getDate, getFrame, getJacobianWrtCartesian, getMu, getOrbitalParametersDrivers, getOrbitType, getPositionAngleType, reset, setDate, setFrame, setMu, setPositionAngleType

Methods inherited from class java.lang.Object

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

Field Details

EPSILON_DEFAULT

public static final double EPSILON_DEFAULT

Default value for epsilon.

See Also:

• Constant Field Values

MAX_ITERATIONS_DEFAULT

public static final int MAX_ITERATIONS_DEFAULT

Default value for maxIterations.

See Also:

• Constant Field Values

SCALE_DEFAULT

public static final double SCALE_DEFAULT

Default value for scale.

See Also:

• Constant Field Values

Constructor Details

FixedPointTleGenerationAlgorithm

@DefaultDataContext
public FixedPointTleGenerationAlgorithm(TLE templateTLE)

Default constructor.

Uses the default data context as well as EPSILON_DEFAULT, MAX_ITERATIONS_DEFAULT, SCALE_DEFAULT for method convergence.

Parameters:

templateTLE - template TLE

Since:

14.0

FixedPointTleGenerationAlgorithm

@DefaultDataContext
public FixedPointTleGenerationAlgorithm(TLE templateTLE,
 double epsilon,
 int maxIterations,
 double scale)

Constructor.

Uses the default data context.

Parameters:

templateTLE - template TLE

epsilon - used to compute threshold for convergence check

maxIterations - maximum number of iterations for convergence

scale - scale factor of the Fixed Point algorithm

Since:

14.0

FixedPointTleGenerationAlgorithm

public FixedPointTleGenerationAlgorithm(TLE templateTLE,
 double epsilon,
 int maxIterations,
 double scale,
 TimeScale utc,
 Frame teme)

Constructor.

Parameters:

templateTLE - template TLE

epsilon - used to compute threshold for convergence check

maxIterations - maximum number of iterations for convergence

scale - scale factor of the Fixed Point algorithm

utc - UTC time scale

teme - TEME frame

Since:

14.0