fr.cnes.sirius.patrius.attitudes.profiles

Class AngularVelocitiesPolynomialProfile

java.lang.Object

fr.cnes.sirius.patrius.attitudes.profiles.AbstractGuidanceProfile

fr.cnes.sirius.patrius.attitudes.profiles.AngularVelocitiesPolynomialProfile

All Implemented Interfaces:

AttitudeLeg, AttitudeProvider, Leg, Serializable

public final class AngularVelocitiesPolynomialProfile
extends AbstractGuidanceProfile

Represents an angular velocities guidance profile, calculated with polynomial functions

Since:

1.3

Version:

$Id$

Author:

Tiziana Sabatini

See Also:

Serialized Form

Concurrency :

conditionally thread-safe

Concurrency comment :

thread-safe if the attributes are thread-safe

Constructor Summary

Constructors

Constructor and Description
AngularVelocitiesPolynomialProfile(Frame frame, AbsoluteDateInterval timeInterval, List<AngularVelocitiesPolynomialSegment> polynomials) Create a polynomial, angular velocity guidance profile.
AngularVelocitiesPolynomialProfile(Frame frame, AbsoluteDateInterval timeInterval, List<AngularVelocitiesPolynomialSegment> polynomials, String nature) Create a polynomial, angular velocity guidance profile.

Method Summary

Modifier and Type	Method and Description
Attitude	getAttitude(PVCoordinatesProvider pvProv, AbsoluteDate userDate, Frame frame) Compute the attitude corresponding to an orbital state.
List<AngularVelocitiesPolynomialSegment>	getSegments()
Map<AbsoluteDateInterval,double[]>	getXCoefficients()
Map<AbsoluteDateInterval,double[]>	getYCoefficients()
Map<AbsoluteDateInterval,double[]>	getZCoefficients()
void	setSpinDerivativesComputation(boolean computeSpinDerivatives) Method to activate spin derivative computation.
AngularVelocitiesPolynomialProfile	truncateTimeInterval(AbsoluteDateInterval newInterval) Truncate the validity interval of the profile

Methods inherited from class fr.cnes.sirius.patrius.attitudes.profiles.AbstractGuidanceProfile

checkDate, getAttitude, getNature, 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,
                                          List<AngularVelocitiesPolynomialSegment> polynomials)

Create a polynomial, angular velocity guidance profile.

Parameters:

frame - the reference frame of the polynomial functions

timeInterval - interval of validity of the guidance profile

polynomials - the list of polynomial guidance profile segments

AngularVelocitiesPolynomialProfile

public AngularVelocitiesPolynomialProfile(Frame frame,
                                          AbsoluteDateInterval timeInterval,
                                          List<AngularVelocitiesPolynomialSegment> polynomials,
                                          String nature)

Create a polynomial, angular velocity guidance profile.

Parameters:

frame - the reference frame of the polynomial functions

timeInterval - interval of validity of the guidance profile

polynomials - the list of polynomial guidance profile segments

nature - Nature

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.

getAttitude

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

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:

PatriusException - if attitude cannot be computed

setSpinDerivativesComputation

public void setSpinDerivativesComputation(boolean computeSpinDerivatives)
                                   throws PatriusException

Method to activate spin derivative computation.

Parameters:

computeSpinDerivatives - true if spin derivatives should be computed

Throws:

PatriusException - if spin derivatives can not be computed

truncateTimeInterval

public AngularVelocitiesPolynomialProfile truncateTimeInterval(AbsoluteDateInterval newInterval)
                                                        throws PatriusException

Truncate the validity interval of the profile

Parameters:

newInterval - the new time interval

Returns:

the current profile re-computed with the new time interval

Throws:

PatriusException - if the new time interval is not included in the current time interval

getSegments

public List<AngularVelocitiesPolynomialSegment> getSegments()

Returns:

the segments of the profile