org.orekit.propagation.conversion

Class KeplerianPropagatorBuilder

java.lang.Object

org.orekit.propagation.conversion.AbstractPropagatorBuilder

org.orekit.propagation.conversion.KeplerianPropagatorBuilder

All Implemented Interfaces:

PropagatorBuilder

public class KeplerianPropagatorBuilder
extends AbstractPropagatorBuilder

Builder for Keplerian propagator.

Since:

6.0

Author:

Pascal Parraud

Constructor Summary

Constructors

Constructor and Description
KeplerianPropagatorBuilder(Orbit templateOrbit, PositionAngleType positionAngleType, double positionScale) Build a new instance.
KeplerianPropagatorBuilder(Orbit templateOrbit, PositionAngleType positionAngleType, double positionScale, AttitudeProvider attitudeProvider) Build a new instance.

Method Summary

Modifier and Type	Method and Description
AbstractBatchLSModel	buildLeastSquaresModel(PropagatorBuilder[] builders, List<ObservedMeasurement<?>> measurements, ParameterDriversList estimatedMeasurementsParameters, ModelObserver observer) Build a new batch least squares model.
Propagator	buildPropagator(double[] normalizedParameters) Build a propagator.
KeplerianPropagatorBuilder	copy() Create a new instance identical to this one.

Methods inherited from class org.orekit.propagation.conversion.AbstractPropagatorBuilder

addAdditionalDerivativesProvider, addSupportedParameters, createInitialOrbit, deselectDynamicParameters, getAdditionalDerivativesProviders, getAttitudeProvider, getFrame, getInitialOrbitDate, getMu, getOrbitalParametersDrivers, getOrbitType, getPositionAngleType, getPositionScale, getPropagationParametersDrivers, getSelectedNormalizedParameters, resetOrbit, setAttitudeProvider, setParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

KeplerianPropagatorBuilder

public KeplerianPropagatorBuilder(Orbit templateOrbit,
                                  PositionAngleType positionAngleType,
                                  double positionScale)

Build a new instance.

The template orbit is used as a model to create initial orbit. It defines the inertial frame, the central attraction coefficient, the orbit type, and is also used together with the positionScale to convert from the normalized parameters used by the callers of this builder to the real orbital parameters. The default attitude provider is aligned with the orbit's inertial frame.

Parameters:

templateOrbit - reference orbit from which real orbits will be built

positionAngleType - position angle type to use

positionScale - scaling factor used for orbital parameters normalization (typically set to the expected standard deviation of the position)

Since:

8.0

See Also:

KeplerianPropagatorBuilder(Orbit, PositionAngleType, double, AttitudeProvider)

KeplerianPropagatorBuilder

public KeplerianPropagatorBuilder(Orbit templateOrbit,
                                  PositionAngleType positionAngleType,
                                  double positionScale,
                                  AttitudeProvider attitudeProvider)

Build a new instance.

The template orbit is used as a model to create initial orbit. It defines the inertial frame, the central attraction coefficient, the orbit type, and is also used together with the positionScale to convert from the normalized parameters used by the callers of this builder to the real orbital parameters.

Parameters:

templateOrbit - reference orbit from which real orbits will be built

positionAngleType - position angle type to use

positionScale - scaling factor used for orbital parameters normalization (typically set to the expected standard deviation of the position)

attitudeProvider - attitude law to use.

Since:

10.1

Method Detail

copy

public KeplerianPropagatorBuilder copy()

Create a new instance identical to this one.

Returns:

new instance identical to this one

buildPropagator

public Propagator buildPropagator(double[] normalizedParameters)

Build a propagator.

Parameters:

normalizedParameters - normalized values for the selected parameters

Returns:

an initialized propagator

buildLeastSquaresModel

public AbstractBatchLSModel buildLeastSquaresModel(PropagatorBuilder[] builders,
                                                   List<ObservedMeasurement<?>> measurements,
                                                   ParameterDriversList estimatedMeasurementsParameters,
                                                   ModelObserver observer)

Build a new batch least squares model.

Parameters:

builders - builders to use for propagation

measurements - measurements

estimatedMeasurementsParameters - estimated measurements parameters

observer - observer to be notified at model calls

Returns:

a new model for the Batch Least Squares orbit determination