org.orekit.rugged.utils

Class SpacecraftToObservedBody

java.lang.Object

org.orekit.rugged.utils.SpacecraftToObservedBody

All Implemented Interfaces:

Serializable

public class SpacecraftToObservedBody
extends Object
implements Serializable

Provider for observation transforms.

Author:

Luc Maisonobe

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SpacecraftToObservedBody(Frame inertialFrame, Frame bodyFrame, AbsoluteDate minDate, AbsoluteDate maxDate, double tStep, double overshootTolerance, List<TimeStampedPVCoordinates> positionsVelocities, int pvInterpolationNumber, CartesianDerivativesFilter pvFilter, List<TimeStampedAngularCoordinates> quaternions, int aInterpolationNumber, AngularDerivativesFilter aFilter) Simple constructor.
SpacecraftToObservedBody(Frame inertialFrame, Frame bodyFrame, AbsoluteDate minDate, AbsoluteDate maxDate, double tStep, double overshootTolerance, List<Transform> bodyToInertial, List<Transform> scToInertial) Simple constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Frame	getBodyFrame() Get the body frame.
Transform	getBodyToInertial(AbsoluteDate date) Get transform from observed body frame to inertial frame.
Frame	getInertialFrame() Get the inertial frame.
Transform	getInertialToBody(AbsoluteDate date) Get transform from inertial frame to observed body frame.
AbsoluteDate	getMaxDate() Get the end of search time span.
AbsoluteDate	getMinDate() Get the start of search time span.
double	getOvershootTolerance() Get the tolerance in seconds allowed for getMinDate() and getMaxDate() overshooting.
Transform	getScToInertial(AbsoluteDate date) Get transform from spacecraft to inertial frame.
double	getTStep() Get the step to use for inertial frame to body frame transforms cache computations.
boolean	isInRange(AbsoluteDate date) Check if a date is in the supported range.

Methods inherited from class java.lang.Object

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

Constructor Detail

SpacecraftToObservedBody

public SpacecraftToObservedBody(Frame inertialFrame,
                        Frame bodyFrame,
                        AbsoluteDate minDate,
                        AbsoluteDate maxDate,
                        double tStep,
                        double overshootTolerance,
                        List<TimeStampedPVCoordinates> positionsVelocities,
                        int pvInterpolationNumber,
                        CartesianDerivativesFilter pvFilter,
                        List<TimeStampedAngularCoordinates> quaternions,
                        int aInterpolationNumber,
                        AngularDerivativesFilter aFilter)
                         throws RuggedException

Simple constructor.

Parameters:

inertialFrame - inertial frame

bodyFrame - observed body frame

minDate - start of search time span

maxDate - end of search time span

tStep - step to use for inertial frame to body frame transforms cache computations

overshootTolerance - tolerance in seconds allowed for minDate and maxDate overshooting slightly the position, velocity and quaternions ephemerides

positionsVelocities - satellite position and velocity

pvInterpolationNumber - number of points to use for position/velocity interpolation

pvFilter - filter for derivatives from the sample to use in position/velocity interpolation

quaternions - satellite quaternions

aInterpolationNumber - number of points to use for attitude interpolation

aFilter - filter for derivatives from the sample to use in attitude interpolation

Throws:

RuggedException - if [minDate, maxDate] search time span overshoots position or attitude samples by more than overshootTolerance ,

SpacecraftToObservedBody

public SpacecraftToObservedBody(Frame inertialFrame,
                        Frame bodyFrame,
                        AbsoluteDate minDate,
                        AbsoluteDate maxDate,
                        double tStep,
                        double overshootTolerance,
                        List<Transform> bodyToInertial,
                        List<Transform> scToInertial)

Simple constructor.

Parameters:

inertialFrame - inertial frame

bodyFrame - observed body frame

minDate - start of search time span

maxDate - end of search time span

tStep - step to use for inertial frame to body frame transforms cache computations

overshootTolerance - tolerance in seconds allowed for minDate and maxDate overshooting slightly the position, velocity and quaternions ephemerides

bodyToInertial - transforms sample from observed body frame to inertial frame

scToInertial - transforms sample from spacecraft frame to inertial frame

Method Detail

getInertialFrame

public Frame getInertialFrame()

Get the inertial frame.

Returns:

inertial frame

getBodyFrame

public Frame getBodyFrame()

Get the body frame.

Returns:

body frame

getMinDate

public AbsoluteDate getMinDate()

Get the start of search time span.

Returns:

start of search time span

getMaxDate

public AbsoluteDate getMaxDate()

Get the end of search time span.

Returns:

end of search time span

getTStep

public double getTStep()

Get the step to use for inertial frame to body frame transforms cache computations.

Returns:

step to use for inertial frame to body frame transforms cache computations

getOvershootTolerance

public double getOvershootTolerance()

Get the tolerance in seconds allowed for getMinDate() and getMaxDate() overshooting.

Returns:

tolerance in seconds allowed for getMinDate() and getMaxDate() overshooting

getScToInertial

public Transform getScToInertial(AbsoluteDate date)
                          throws RuggedException

Get transform from spacecraft to inertial frame.

Parameters:

date - date of the transform

Returns:

transform from spacecraft to inertial frame

Throws:

RuggedException - if spacecraft position or attitude cannot be computed at date

getInertialToBody

public Transform getInertialToBody(AbsoluteDate date)
                            throws RuggedException

Get transform from inertial frame to observed body frame.

Parameters:

date - date of the transform

Returns:

transform from inertial frame to observed body frame

Throws:

RuggedException - if frames cannot be computed at date

getBodyToInertial

public Transform getBodyToInertial(AbsoluteDate date)
                            throws RuggedException

Get transform from observed body frame to inertial frame.

Parameters:

date - date of the transform

Returns:

transform from observed body frame to inertial frame

Throws:

RuggedException - if frames cannot be computed at date

isInRange

public boolean isInRange(AbsoluteDate date)

Check if a date is in the supported range.

Parameters:

date - date to check

Returns:

true if date is in the supported range