org.orekit.propagation.analytical.tle

Class SGP4

java.lang.Object

org.orekit.propagation.AbstractPropagator

org.orekit.propagation.analytical.AbstractAnalyticalPropagator

org.orekit.propagation.analytical.tle.TLEPropagator

org.orekit.propagation.analytical.tle.SGP4

All Implemented Interfaces:

Propagator, PVCoordinatesProvider

public class SGP4
extends TLEPropagator

该类包含使用SGP4模型计算传播坐标的方法。

用户不应该在这个类中进行操作，因为它由TLEPropagator在内部处理。

这个实现在很大程度上受到论文和源代码重新审视Spacetrack报告＃3的启发，并完全符合其结果和测试用例。

Author:

Felix R. Hoots, Ronald L. Roehrich, December 1980 (original fortran), David A. Vallado, Paul Crawford, Richard Hujsak, T.S. Kelso (C++ translation and improvements), Fabien Maussion (java translation)

Field Summary

Fields inherited from class org.orekit.propagation.analytical.tle.TLEPropagator

a, a0dp, beta0, beta02, c1, c2, c4, coef, coef1, cosi0, e, e0sq, eeta, eta, etasq, i, omega, omgdot, perige, s4, sini0, t2cof, theta2, tle, tsi, utc, xl, xmdot, xn0dp, xnodcf, xnode, xnodot

Fields inherited from interface org.orekit.propagation.Propagator

DEFAULT_MASS

Constructor Summary

Constructors

Constructor and Description
SGP4(TLE initialTLE, AttitudeProvider attitudeProvider, double mass) 用于唯一初始TLE的构造函数。
SGP4(TLE initialTLE, AttitudeProvider attitudeProvider, double mass, Frame teme) 用于唯一初始TLE的构造函数。

Method Summary

Modifier and Type	Method and Description
protected void	sxpInitialize() 每个传播器（SGP或SDP）的初始化。
protected void	sxpPropagate(double tSince) 每个传播器（SGP或SDP）的传播。

Methods inherited from class org.orekit.propagation.analytical.tle.TLEPropagator

createHarvester, getDefaultTleGenerationAlgorithm, getFrame, getJacobiansColumnsNames, getMass, getMU, getPVCoordinates, getTLE, propagateOrbit, resetInitialState, resetIntermediateState, selectExtrapolator, selectExtrapolator, selectExtrapolator, selectExtrapolator

Methods inherited from class org.orekit.propagation.analytical.AbstractAnalyticalPropagator

acceptStep, addEventDetector, basicPropagate, clearEventsDetectors, getEphemerisGenerator, getEventsDetectors, getPvProvider, propagate

Methods inherited from class org.orekit.propagation.AbstractPropagator

addAdditionalStateProvider, getAdditionalStateProviders, getAttitudeProvider, getHarvester, getInitialState, getManagedAdditionalStates, getMultiplexer, getPVCoordinates, getStartDate, initializeAdditionalStates, initializePropagation, isAdditionalStateManaged, propagate, setAttitudeProvider, setStartDate, setupMatricesComputation, stateChanged, updateAdditionalStates, updateUnmanagedStates

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.propagation.Propagator

clearStepHandlers, getDefaultLaw, setStepHandler, setStepHandler

Methods inherited from interface org.orekit.utils.PVCoordinatesProvider

getPosition

Constructor Detail

SGP4

@DefaultDataContext
public SGP4(TLE initialTLE,
                                AttitudeProvider attitudeProvider,
                                double mass)

用于唯一初始TLE的构造函数。

此构造函数使用默认数据上下文。

参数：

initialTLE - 要传播的TLE。

attitudeProvider - 姿态计算提供程序

mass - 航天器质量（千克）

另请参阅：

SGP4(TLE, AttitudeProvider, double, Frame)

SGP4

public SGP4(TLE initialTLE,
            AttitudeProvider attitudeProvider,
            double mass,
            Frame teme)

用于唯一初始TLE的构造函数。

参数：

initialTLE - 要传播的TLE。

attitudeProvider - 姿态计算提供程序

mass - 航天器质量（千克）

teme - 用于传播的TEME参考系。

自版本：

10.1

Method Detail

sxpInitialize

protected void sxpInitialize()

每个传播器（SGP或SDP）的初始化。

指定者：

sxpInitialize 在类 TLEPropagator

sxpPropagate

protected void sxpPropagate(double tSince)

每个传播器（SGP或SDP）的传播。

指定者：

sxpPropagate 在类 TLEPropagator

参数：

tSince - 距离初始时刻的偏移（分钟）