fr.cnes.sirius.patrius.guidance
Class AngularVelocitiesPolynomialProfile

java.lang.Object
  fr.cnes.sirius.patrius.guidance.GuidanceProfile
      fr.cnes.sirius.patrius.guidance.AngularVelocitiesPolynomialProfile

All Implemented Interfaces:

Serializable, AttitudeLeg, AttitudeProvider

public final class AngularVelocitiesPolynomialProfile
extends GuidanceProfile

Represents an angular velocities guidance profile, calculated with polynomial functions

Since:

1.3

Version:

$Id: AngularVelocitiesPolynomialProfile.java 15520 2016-03-07 13:25:06Z bignon $

Author:

Tiziana Sabatini

See Also:

Serialized Form

Concurrency :

conditionally thread-safe

Concurrency comment :

thread-safe if the attributes are thread-safe

Constructor Summary

AngularVelocitiesPolynomialProfile(Frame frame, AbsoluteDateInterval timeInterval, Rotation initialRotation, List<Vector3DPolynomialSegment> polynomials, KinematicsToolkit.IntegrationType integType, double integStep)
Create a polynomial, angular velocity guidance profile.

Method Summary

Attitude	getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate userDate, Frame frame) Compute the attitude corresponding to an orbital state.
Vector3DFunction	getVectorFunction()
Map<AbsoluteDateInterval,double[]>	getXCoefficients()
Map<AbsoluteDateInterval,double[]>	getYCoefficients()
Map<AbsoluteDateInterval,double[]>	getZCoefficients()
void	setSpinDerivativesComputation(boolean computeSpinDerivatives) Method to activate spin derivative computation.

Methods inherited from class fr.cnes.sirius.patrius.guidance.GuidanceProfile

checkDate, getAttitude, getTimeInterval

Methods inherited from class java.lang.Object

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

Constructor Detail

AngularVelocitiesPolynomialProfile

public AngularVelocitiesPolynomialProfile(Frame frame,
                                          AbsoluteDateInterval timeInterval,
                                          Rotation initialRotation,
                                          List<Vector3DPolynomialSegment> polynomials,
                                          KinematicsToolkit.IntegrationType integType,
                                          double integStep)

Create a polynomial, angular velocity guidance profile.

Parameters:

frame - the reference frame of the polynomial functions

timeInterval - interval of validity of the guidance profile

initialRotation - rotation at origin

polynomials - the list of polynomial guidance profile segments

integType - integration type (see KinematicsToolkit.IntegrationType)

integStep - integration step

Method Detail

getXCoefficients

public Map<AbsoluteDateInterval,double[]> getXCoefficients()

Returns:

the map containing the coefficients of the polynomial function representing x, and their time interval of validity.

getYCoefficients

public Map<AbsoluteDateInterval,double[]> getYCoefficients()

Returns:

the map containing the coefficients of the polynomial function representing y, and their time interval of validity.

getZCoefficients

public Map<AbsoluteDateInterval,double[]> getZCoefficients()

Returns:

the map containing the coefficients of the polynomial function representing z, and their time interval of validity.

getVectorFunction

public Vector3DFunction getVectorFunction()

Returns:

the angular velocity function

getAttitude

public Attitude getAttitude(PVCoordinatesProvider pvProv,
                            AbsoluteDate userDate,
                            Frame frame)
                     throws OrekitException

Compute the attitude corresponding to an orbital state.

Parameters:

pvProv - local position-velocity provider around current date

userDate - current date

frame - reference frame from which attitude is computed

Returns:

attitude attitude on the specified date and position-velocity state

Throws:

OrekitException - if attitude cannot be computed

setSpinDerivativesComputation

public void setSpinDerivativesComputation(boolean computeSpinDerivatives)
                                   throws OrekitException

Method to activate spin derivative computation.

Parameters:

computeSpinDerivatives - true if spin derivatives should be computed

Throws:

OrekitException - if spin derivatives can not be computed