org.orekit.estimation.measurements

Class TurnAroundRange

java.lang.Object

org.orekit.estimation.measurements.AbstractMeasurement<T>

org.orekit.estimation.measurements.GroundReceiverMeasurement<TurnAroundRange>

org.orekit.estimation.measurements.TurnAroundRange

All Implemented Interfaces:

Comparable<ComparableMeasurement>, ComparableMeasurement, ObservedMeasurement<TurnAroundRange>, TimeStamped, ParameterDriversProvider

public class TurnAroundRange
extends GroundReceiverMeasurement<TurnAroundRange>

表示使用主地面站和次要地面站进行转向测距的类建模。

该测量被认为是一个信号：- 从主地面站发射 - 在航天器上反射 - 在次要地面站上反射 - 再次在航天器上反射 - 在主地面站接收 其值是发射和接收之间经过的时间除以2c，其中c是光速。在信号飞行时间内考虑了地面站和航天器的运动。测量的日期对应于地面接收到反射信号的时间。

Since:

9.0

Author:

Thierry Ceolin, Luc Maisonobe, Maxime Journot

Field Summary

Fields

Modifier and Type	Field and Description
static String	MEASUREMENT_TYPE 测量的类型。

Constructor Summary

Constructors

Constructor and Description
TurnAroundRange(GroundStation primaryStation, GroundStation secondaryStation, AbsoluteDate date, double turnAroundRange, double sigma, double baseWeight, ObservableSatellite satellite) 简单构造函数。

Method Summary

Modifier and Type	Method and Description
GroundStation	getPrimaryStation() 获取执行测量的主地面站。
GroundStation	getSecondaryStation() 反射信号的次要地面站。
protected EstimatedMeasurement<TurnAroundRange>	theoreticalEvaluation(int iteration, int evaluation, SpacecraftState[] states) 估算理论值。
protected EstimatedMeasurementBase<TurnAroundRange>	theoreticalEvaluationWithoutDerivatives(int iteration, int evaluation, SpacecraftState[] states) 估算不带导数的理论值。

Methods inherited from class org.orekit.estimation.measurements.GroundReceiverMeasurement

computeCommonParametersWithDerivatives, computeCommonParametersWithout, getGroundStationCoordinates, getGroundStationPosition, getStation, isTwoWay

Methods inherited from class org.orekit.estimation.measurements.AbstractMeasurement

addModifier, addParameterDriver, estimate, estimateWithoutDerivatives, getBaseWeight, getCoordinates, getDate, getDimension, getModifiers, getObservedValue, getParametersDrivers, getSatellites, getTheoreticalStandardDeviation, isEnabled, setEnabled, signalTimeOfFlight, signalTimeOfFlight

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.estimation.measurements.ObservedMeasurement

getMeasurementType

Methods inherited from interface org.orekit.estimation.measurements.ComparableMeasurement

compareTo

Methods inherited from interface org.orekit.time.TimeStamped

durationFrom

Methods inherited from interface org.orekit.utils.ParameterDriversProvider

getNbParametersDriversValue, getParameterDriver, getParameters, getParameters, getParameters, getParameters, getParametersAllValues, getParametersAllValues, isSupported

Field Detail

MEASUREMENT_TYPE

public static final String MEASUREMENT_TYPE

测量的类型。

另请参阅:

常量字段值

Constructor Detail

TurnAroundRange

public TurnAroundRange(GroundStation primaryStation,
                       GroundStation secondaryStation,
                       AbsoluteDate date,
                       double turnAroundRange,
                       double sigma,
                       double baseWeight,
                       ObservableSatellite satellite)

简单构造函数。

参数:

primaryStation - 执行测量的地面站

secondaryStation - 反射信号的地面站

date - 测量的日期

turnAroundRange - 观测值

sigma - 理论标准偏差

baseWeight - 基本权重

satellite - 与此测量相关的卫星

自从:

9.3

Method Detail

getPrimaryStation

public GroundStation getPrimaryStation()

获取执行测量的主地面站。

返回:

执行测量的主地面站

getSecondaryStation

public GroundStation getSecondaryStation()

获取反射信号的次要地面站。

返回:

反射信号的次要地面站

theoreticalEvaluationWithoutDerivatives

protected EstimatedMeasurementBase<TurnAroundRange> theoreticalEvaluationWithoutDerivatives(int iteration,
                                                                                            int evaluation,
                                                                                            SpacecraftState[] states)

估算不带导数的理论值。

理论值没有应用任何修饰符。

指定者:

theoreticalEvaluationWithoutDerivatives 在类 AbstractMeasurement<TurnAroundRange>

参数:

iteration - 迭代次数

evaluation - 评估次数

states - 测量日期的轨道状态

返回:

理论值

另请参阅:

AbstractMeasurement.estimate(int, int, SpacecraftState[])

theoreticalEvaluation

protected EstimatedMeasurement<TurnAroundRange> theoreticalEvaluation(int iteration,
                                                                      int evaluation,
                                                                      SpacecraftState[] states)

估算理论值。

理论值没有应用任何修饰符。

指定者:

theoreticalEvaluation 在类 AbstractMeasurement<TurnAroundRange>

参数:

iteration - 迭代次数

evaluation - 评估次数

states - 测量日期的轨道状态

返回:

理论值

另请参阅:

AbstractMeasurement.estimate(int, int, SpacecraftState[])