Package org.orekit.propagation.conversion

Class NumericalPropagatorBuilder

java.lang.Object

org.orekit.propagation.conversion.AbstractPropagatorBuilder

org.orekit.propagation.conversion.NumericalPropagatorBuilder

All Implemented Interfaces:

PropagatorBuilder

public class NumericalPropagatorBuilder
extends AbstractPropagatorBuilder

Builder for numerical propagator.

Since:

6.0

Author:

Pascal Parraud

Constructor Summary

Constructors

Constructor	Description
NumericalPropagatorBuilder(Orbit referenceOrbit, ODEIntegratorBuilder builder, PositionAngleType positionAngleType, double positionScale)	Build a new instance.
NumericalPropagatorBuilder(Orbit referenceOrbit, ODEIntegratorBuilder builder, PositionAngleType positionAngleType, double positionScale, AttitudeProvider attitudeProvider)	Build a new instance.

Method Summary

Modifier and Type	Method	Description
void	addForceModel(ForceModel model)	Add a force model to the global perturbation model.
BatchLSModel	buildLeastSquaresModel(PropagatorBuilder[] builders, List<ObservedMeasurement<?>> measurements, ParameterDriversList estimatedMeasurementsParameters, ModelObserver observer)	Build a new batch least squares model.
NumericalPropagator	buildPropagator(double[] normalizedParameters)	Build a propagator.
NumericalPropagatorBuilder	copy()	Create a copy of a NumericalPropagatorBuilder object.
List<ForceModel>	getAllForceModels()	Get the list of all force models.
ODEIntegratorBuilder	getIntegratorBuilder()	Get the integrator builder.
double	getMass()	Get the mass.
void	setMass(double mass)	Set the initial mass.

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

Methods inherited from interface org.orekit.propagation.conversion.PropagatorBuilder

buildPropagator

Constructor Detail

NumericalPropagatorBuilder

public NumericalPropagatorBuilder(Orbit referenceOrbit,
                                  ODEIntegratorBuilder builder,
                                  PositionAngleType positionAngleType,
                                  double positionScale)

Build a new instance.

The reference orbit is used as a model to create initial orbit. It defines the inertial frame, the central attraction coefficient, 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:

referenceOrbit - reference orbit from which real orbits will be built

builder - first order integrator builder

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:

NumericalPropagatorBuilder(Orbit, ODEIntegratorBuilder, PositionAngleType, double, AttitudeProvider)

NumericalPropagatorBuilder

public NumericalPropagatorBuilder(Orbit referenceOrbit,
                                  ODEIntegratorBuilder builder,
                                  PositionAngleType positionAngleType,
                                  double positionScale,
                                  AttitudeProvider attitudeProvider)

Build a new instance.

The reference orbit is used as a model to create initial orbit. It defines the inertial frame, the central attraction coefficient, 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:

referenceOrbit - reference orbit from which real orbits will be built

builder - first order integrator builder

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.

Since:

10.1

Method Detail

copy

public NumericalPropagatorBuilder copy()

Create a copy of a NumericalPropagatorBuilder object.

Returns:

Copied version of the NumericalPropagatorBuilder

getIntegratorBuilder

public ODEIntegratorBuilder getIntegratorBuilder()

Get the integrator builder.

Returns:

the integrator builder

Since:

9.2

getAllForceModels

public List<ForceModel> getAllForceModels()

Get the list of all force models.

Returns:

the list of all force models

Since:

9.2

addForceModel

public void addForceModel(ForceModel model)

Add a force model to the global perturbation model.

If this method is not called at all, the integrated orbit will follow a Keplerian evolution only.

Parameters:

model - perturbing ForceModel to add

getMass

public double getMass()

Get the mass.

Returns:

the mass

Since:

9.2

setMass

public void setMass(double mass)

Set the initial mass.

Parameters:

mass - the mass (kg)

buildPropagator

public NumericalPropagator buildPropagator(double[] normalizedParameters)

Build a propagator.

Parameters:

normalizedParameters - normalized values for the selected parameters

Returns:

an initialized propagator

buildLeastSquaresModel

public BatchLSModel 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