fr.cnes.sirius.patrius.attitudes.profiles

Class AngularVelocitiesPolynomialSegment

java.lang.Object

fr.cnes.sirius.patrius.attitudes.profiles.AngularVelocitiesPolynomialSegment

public final class AngularVelocitiesPolynomialSegment
extends Object

Represents an angular velocities guidance segment, calculated with polynomial functions

Since:

4.0

Version:

$Id$

Author:

Hubert Marechal

Concurrency :

conditionally thread-safe

Concurrency comment :

thread-safe if the attributes are thread-safe

Constructor Summary

Constructors

Constructor and Description
AngularVelocitiesPolynomialSegment(Rotation initialRotation, PolynomialFunction x, PolynomialFunction y, PolynomialFunction z, AbsoluteDate date0, AbsoluteDateInterval timeInterval, KinematicsToolkit.IntegrationType integType, double integStep) Build an angular velocity polynomial guidance profile on a segment.

Method Summary

Modifier and Type	Method and Description
static int	factorial(int n) Factorial.
AbsoluteDate	getDateZero() Get the date zero of the polynomial functions.
Rotation	getOrientation(AbsoluteDate date) Get the orientation from the quaternion polynomials at a given date.
Vector3D	getRotationAcceleration(AbsoluteDate date) Get the rotation acceleration from the vector3D at a given date.
AbsoluteDateInterval	getTimeInterval() Get the time interval of the guidance profile segment.
Vector3DFunction	getVectorFunction()
Vector3D	getVelocity(AbsoluteDate date) Get the velocity from the vector3D at a given date.
double[]	getXCoefficients()
double[]	getYCoefficients()
double[]	getZCoefficients()
AngularVelocitiesPolynomialSegment	truncateSegment(AbsoluteDateInterval newInterval) Given a sub-interval, truncate the original segment.

Methods inherited from class java.lang.Object

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

Constructor Detail

AngularVelocitiesPolynomialSegment

public AngularVelocitiesPolynomialSegment(Rotation initialRotation,
                                          PolynomialFunction x,
                                          PolynomialFunction y,
                                          PolynomialFunction z,
                                          AbsoluteDate date0,
                                          AbsoluteDateInterval timeInterval,
                                          KinematicsToolkit.IntegrationType integType,
                                          double integStep)

Build an angular velocity polynomial guidance profile on a segment. The polynomial representing the vector 3D components are generic polynomial functions.

Parameters:

initialRotation - rotation at origin

x - the polynomial function representing the x component of the angular velocity vector3D

y - the polynomial function representing the y component of the angular velocity vector3D

z - the polynomial function representing the z component of the angular velocity vector3D

date0 - the date zero of the polynomial functions

timeInterval - the time interval of the segment

integType - the Integration type

integStep - the integration step

Method Detail

getTimeInterval

public AbsoluteDateInterval getTimeInterval()

Get the time interval of the guidance profile segment.

Returns:

the time interval of the guidance profile segment.

getDateZero

public AbsoluteDate getDateZero()

Get the date zero of the polynomial functions.

Returns:

the date zero of the polynomial functions.

getXCoefficients

public double[] getXCoefficients()

Returns:

the coefficients of the polynomial function representing x angular rate.

getYCoefficients

public double[] getYCoefficients()

Returns:

the coefficients of the polynomial function representing y.

getZCoefficients

public double[] getZCoefficients()

Returns:

the coefficients of the polynomial function representing z.

getOrientation

public Rotation getOrientation(AbsoluteDate date)

Get the orientation from the quaternion polynomials at a given date.

Parameters:

date - the date

Returns:

the orientation at a given date

getVelocity

public Vector3D getVelocity(AbsoluteDate date)

Get the velocity from the vector3D at a given date.

Parameters:

date - the date

Returns:

the velocity at a given date

getRotationAcceleration

public Vector3D getRotationAcceleration(AbsoluteDate date)

Get the rotation acceleration from the vector3D at a given date.

Parameters:

date - the date

Returns:

the rotation acceleration at a given date

getVectorFunction

public Vector3DFunction getVectorFunction()

Returns:

the angular velocity function

truncateSegment

public AngularVelocitiesPolynomialSegment truncateSegment(AbsoluteDateInterval newInterval)
                                                   throws PatriusException

Given a sub-interval, truncate the original segment.

Parameters:

newInterval - the sub-interval where the segment has to be truncated

Returns:

the truncated segment

Throws:

PatriusException - thrown new interval not entirely included in current interval

factorial

public static int factorial(int n)

Factorial.

Parameters:

n - integer

Returns:

compute factorial of n