T - the type of the field elementspublic class TimeStampedFieldPVCoordinates<T extends RealFieldElement<T>> extends FieldPVCoordinates<T> implements TimeStamped
| Modifier and Type | Method and Description |
|---|---|
AbsoluteDate |
getDate()
Get the date.
|
static <T extends RealFieldElement<T>> |
interpolate(AbsoluteDate date,
CartesianDerivativesFilter filter,
Collection<TimeStampedFieldPVCoordinates<T>> sample)
Interpolate position-velocity.
|
TimeStampedFieldPVCoordinates<T> |
shiftedBy(double dt)
Get a time-shifted state.
|
String |
toString()
Return a string representation of this position/velocity pair.
|
estimateVelocity, getAcceleration, getAngularVelocity, getMomentum, getPosition, getVelocity, interpolate, negate, normalize, toPVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, FieldVector3D<T> position, FieldVector3D<T> velocity, FieldVector3D<T> acceleration)
date - coordinates dateposition - the position vector (m)velocity - the velocity vector (m/s)acceleration - the acceleration vector (m/s²)public TimeStampedFieldPVCoordinates(AbsoluteDate date, double a, FieldPVCoordinates<T> pv)
Build a PVCoordinates from another one and a scale factor.
The PVCoordinates built will be a * pv
date - date of the built coordinatesa - scale factorpv - base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a, FieldPVCoordinates<T> pv)
Build a PVCoordinates from another one and a scale factor.
The PVCoordinates built will be a * pv
date - date of the built coordinatesa - scale factorpv - base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a, PVCoordinates pv)
Build a PVCoordinates from another one and a scale factor.
The PVCoordinates built will be a * pv
date - date of the built coordinatesa - scale factorpv - base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, FieldPVCoordinates<T> start, FieldPVCoordinates<T> end)
Build a relative PVCoordinates from a start and an end position.
The PVCoordinates built will be end - start.
date - date of the built coordinatesstart - Starting PVCoordinatesend - ending PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, double a1, FieldPVCoordinates<T> pv1, double a2, FieldPVCoordinates<T> pv2)
Build a PVCoordinates from two other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a1, FieldPVCoordinates<T> pv1, T a2, FieldPVCoordinates<T> pv2)
Build a PVCoordinates from two other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a1, PVCoordinates pv1, T a2, PVCoordinates pv2)
Build a PVCoordinates from two other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, double a1, FieldPVCoordinates<T> pv1, double a2, FieldPVCoordinates<T> pv2, double a3, FieldPVCoordinates<T> pv3)
Build a PVCoordinates from three other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2 + a3 * u3
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatesa3 - third scale factorpv3 - third base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a1, FieldPVCoordinates<T> pv1, T a2, FieldPVCoordinates<T> pv2, T a3, FieldPVCoordinates<T> pv3)
Build a PVCoordinates from three other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2 + a3 * u3
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatesa3 - third scale factorpv3 - third base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a1, PVCoordinates pv1, T a2, PVCoordinates pv2, T a3, PVCoordinates pv3)
Build a PVCoordinates from three other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2 + a3 * u3
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatesa3 - third scale factorpv3 - third base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, double a1, FieldPVCoordinates<T> pv1, double a2, FieldPVCoordinates<T> pv2, double a3, FieldPVCoordinates<T> pv3, double a4, FieldPVCoordinates<T> pv4)
Build a PVCoordinates from four other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2 + a3 * u3 + a4 * u4
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatesa3 - third scale factorpv3 - third base (unscaled) PVCoordinatesa4 - fourth scale factorpv4 - fourth base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a1, FieldPVCoordinates<T> pv1, T a2, FieldPVCoordinates<T> pv2, T a3, FieldPVCoordinates<T> pv3, T a4, FieldPVCoordinates<T> pv4)
Build a PVCoordinates from four other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2 + a3 * u3 + a4 * u4
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatesa3 - third scale factorpv3 - third base (unscaled) PVCoordinatesa4 - fourth scale factorpv4 - fourth base (unscaled) PVCoordinatespublic TimeStampedFieldPVCoordinates(AbsoluteDate date, T a1, PVCoordinates pv1, T a2, PVCoordinates pv2, T a3, PVCoordinates pv3, T a4, PVCoordinates pv4)
Build a PVCoordinates from four other ones and corresponding scale factors.
The PVCoordinates built will be a1 * u1 + a2 * u2 + a3 * u3 + a4 * u4
date - date of the built coordinatesa1 - first scale factorpv1 - first base (unscaled) PVCoordinatesa2 - second scale factorpv2 - second base (unscaled) PVCoordinatesa3 - third scale factorpv3 - third base (unscaled) PVCoordinatesa4 - fourth scale factorpv4 - fourth base (unscaled) PVCoordinatespublic AbsoluteDate getDate()
getDate in interface TimeStampedpublic TimeStampedFieldPVCoordinates<T> shiftedBy(double dt)
The state can be slightly shifted to close dates. This shift is based on a simple linear model. It is not intended as a replacement for proper orbit propagation (it is not even Keplerian!) but should be sufficient for either small time shifts or coarse accuracy.
shiftedBy in interface TimeShiftable<FieldPVCoordinates<T extends RealFieldElement<T>>>shiftedBy in class FieldPVCoordinates<T extends RealFieldElement<T>>dt - time shift in secondspublic static <T extends RealFieldElement<T>> TimeStampedFieldPVCoordinates<T> interpolate(AbsoluteDate date, CartesianDerivativesFilter filter, Collection<TimeStampedFieldPVCoordinates<T>> sample)
The interpolated instance is created by polynomial Hermite interpolation ensuring velocity remains the exact derivative of position.
Note that even if first time derivatives (velocities) from sample can be ignored, the interpolated instance always includes interpolated derivatives. This feature can be used explicitly to compute these derivatives when it would be too complex to compute them from an analytical formula: just compute a few sample points from the explicit formula and set the derivatives to zero in these sample points, then use interpolation to add derivatives consistent with the positions.
T - the type of the field elementsdate - interpolation datefilter - filter for derivatives from the sample to use in interpolationsample - sample points on which interpolation should be donepublic String toString()
toString in class FieldPVCoordinates<T extends RealFieldElement<T>>Copyright © 2002-2016 CS Systèmes d'information. All rights reserved.