GroundReceiverCommonParametersWithoutDerivatives.java
/* Copyright 2023 Luc Maisonobe
* Licensed to CS GROUP (CS) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* CS licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.orekit.estimation.measurements;
import org.orekit.frames.Transform;
import org.orekit.propagation.SpacecraftState;
import org.orekit.utils.TimeStampedPVCoordinates;
/** Common intermediate parameters used to estimate measurements where receiver is a ground station.
* @author Luc Maisonobe
* @since 12.0
*/
public class GroundReceiverCommonParametersWithoutDerivatives {
/** Spacecraft state. */
private final SpacecraftState state;
/** Transform between station and inertial frame. */
private final Transform offsetToInertialDownlink;
/** Station position in inertial frame at end of the downlink leg. */
private final TimeStampedPVCoordinates stationDownlink;
/** Downlink delay. */
private final double tauD;
/** Transit state. */
private final SpacecraftState transitState;
/** Transit position/velocity. */
private final TimeStampedPVCoordinates transitPV;
/** Simple constructor.
* @param state spacecraft state
* @param offsetToInertialDownlink transform between station and inertial frame
* @param stationDownlink station position in inertial frame at end of the downlink leg
* @param tauD downlink delay
* @param transitState transit state
* @param transitPV transit position/velocity
*/
public GroundReceiverCommonParametersWithoutDerivatives(final SpacecraftState state,
final Transform offsetToInertialDownlink,
final TimeStampedPVCoordinates stationDownlink,
final double tauD,
final SpacecraftState transitState,
final TimeStampedPVCoordinates transitPV) {
this.state = state;
this.offsetToInertialDownlink = offsetToInertialDownlink;
this.stationDownlink = stationDownlink;
this.tauD = tauD;
this.transitState = transitState;
this.transitPV = transitPV;
}
/** Get spacecraft state.
* @return spacecraft state
*/
public SpacecraftState getState() {
return state;
}
/** Get transform between station and inertial frame.
* @return transform between station and inertial frame
*/
public Transform getOffsetToInertialDownlink() {
return offsetToInertialDownlink;
}
/** Get station position in inertial frame at end of the downlink leg.
* @return station position in inertial frame at end of the downlink leg
*/
public TimeStampedPVCoordinates getStationDownlink() {
return stationDownlink;
}
/** Get downlink delay.
* @return ownlink delay
*/
public double getTauD() {
return tauD;
}
/** Get transit state.
* @return transit state
*/
public SpacecraftState getTransitState() {
return transitState;
}
/** Get transit position/velocity.
* @return transit position/velocity
*/
public TimeStampedPVCoordinates getTransitPV() {
return transitPV;
}
}