org.orekit.estimation.measurements

Class RangeRate

java.lang.Object

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

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

org.orekit.estimation.measurements.RangeRate

All Implemented Interfaces:

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

public class RangeRate
extends GroundReceiverMeasurement<RangeRate>

两个飞行器之间单向或双向测距速度测量的类建模。单向测距速度（或多普勒）测量通常适用于特定卫星（例如GNSS，DORIS），其中信号从卫星传输到测量站。双向测距速度测量适用于任何系统。信号被传输到（非自旋）卫星并由转发器返回（或反射回）到同一测量站。多普勒测量可以通过将速度乘以（fe/c）来获得，其中fe是发射频率。

Since:

8.0

Author:

Thierry Ceolin, Joris Olympio

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and Description
RangeRate(GroundStation station, AbsoluteDate date, double rangeRate, double sigma, double baseWeight, boolean twoway, ObservableSatellite satellite) 简单构造函数。

Method Summary

Modifier and Type	Method and Description
protected EstimatedMeasurement<RangeRate>	theoreticalEvaluation(int iteration, int evaluation, SpacecraftState[] states) 估计理论值。
protected EstimatedMeasurementBase<RangeRate>	theoreticalEvaluationWithoutDerivatives(int iteration, int evaluation, SpacecraftState[] states) 估计不带导数的理论值。

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：

常量字段数值

Constructor Detail

RangeRate

public RangeRate(GroundStation station,
                 AbsoluteDate date,
                 double rangeRate,
                 double sigma,
                 double baseWeight,
                 boolean twoway,
                 ObservableSatellite satellite)

简单构造函数。

参数：

station - 执行测量的地面站

date - 测量的日期

rangeRate - 观测值，m/s

sigma - 理论标准偏差

baseWeight - 基本权重

twoway - 如果为true，则这是一个双向测量

satellite - 与此测量相关的卫星

自从：

9.3

Method Detail

theoreticalEvaluationWithoutDerivatives

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

估计不带导数的理论值。

理论值没有应用任何修饰符。

指定者：

theoreticalEvaluationWithoutDerivatives 在类 AbstractMeasurement<RangeRate>

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<RangeRate> theoreticalEvaluation(int iteration,
                                                                int evaluation,
                                                                SpacecraftState[] states)

估计理论值。

理论值没有应用任何修饰符。

指定者：

theoreticalEvaluation 在类 AbstractMeasurement<RangeRate>

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[])