Package org.orekit.orbits

Class FieldCircularLatitudeArgumentUtility

java.lang.Object

org.orekit.orbits.FieldCircularLatitudeArgumentUtility

public class FieldCircularLatitudeArgumentUtility
extends Object

Utility methods for converting between different latitude arguments used by FieldCircularOrbit.

Since:

12.1

Author:

Romain Serra

See Also:

FieldCircularOrbit

Method Summary

Modifier and Type	Method	Description
static <T extends CalculusFieldElement<T>> T	convertAlpha(PositionAngleType oldType, T alpha, T ex, T ey, PositionAngleType newType)	Convert argument of latitude.
static <T extends CalculusFieldElement<T>> T	eccentricToMean(T ex, T ey, T alphaE)	Computes the mean latitude argument from the eccentric latitude argument.
static <T extends CalculusFieldElement<T>> T	eccentricToTrue(T ex, T ey, T alphaE)	Computes the true latitude argument from the eccentric latitude argument.
static <T extends CalculusFieldElement<T>> T	meanToEccentric(T ex, T ey, T alphaM)	Computes the eccentric latitude argument from the mean latitude argument.
static <T extends CalculusFieldElement<T>> T	meanToTrue(T ex, T ey, T alphaM)	Computes the true latitude argument from the eccentric latitude argument.
static <T extends CalculusFieldElement<T>> T	trueToEccentric(T ex, T ey, T alphaV)	Computes the eccentric latitude argument from the true latitude argument.
static <T extends CalculusFieldElement<T>> T	trueToMean(T ex, T ey, T alphaV)	Computes the mean latitude argument from the eccentric latitude argument.

Methods inherited from class java.lang.Object

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

Method Detail

eccentricToTrue

public static <T extends CalculusFieldElement<T>> T eccentricToTrue(T ex,
                                                                    T ey,
                                                                    T alphaE)

Computes the true latitude argument from the eccentric latitude argument.

Type Parameters:

T - Type of the field elements

Parameters:

ex - e cos(ω), first component of circular eccentricity vector

ey - e sin(ω), second component of circular eccentricity vector

alphaE - = E + ω eccentric latitude argument (rad)

Returns:

the true latitude argument.

trueToEccentric

public static <T extends CalculusFieldElement<T>> T trueToEccentric(T ex,
                                                                    T ey,
                                                                    T alphaV)

Computes the eccentric latitude argument from the true latitude argument.

Type Parameters:

T - Type of the field elements

Parameters:

ex - e cos(ω), first component of circular eccentricity vector

ey - e sin(ω), second component of circular eccentricity vector

alphaV - = v + ω true latitude argument (rad)

Returns:

the eccentric latitude argument.

meanToEccentric

public static <T extends CalculusFieldElement<T>> T meanToEccentric(T ex,
                                                                    T ey,
                                                                    T alphaM)

Computes the eccentric latitude argument from the mean latitude argument.

Type Parameters:

T - Type of the field elements

Parameters:

ex - e cos(ω), first component of circular eccentricity vector

ey - e sin(ω), second component of circular eccentricity vector

alphaM - = M + ω mean latitude argument (rad)

Returns:

the eccentric latitude argument.

eccentricToMean

public static <T extends CalculusFieldElement<T>> T eccentricToMean(T ex,
                                                                    T ey,
                                                                    T alphaE)

Computes the mean latitude argument from the eccentric latitude argument.

Type Parameters:

T - Type of the field elements

Parameters:

ex - e cos(ω), first component of circular eccentricity vector

ey - e sin(ω), second component of circular eccentricity vector

alphaE - = E + ω eccentric latitude argument (rad)

Returns:

the mean latitude argument.

trueToMean

public static <T extends CalculusFieldElement<T>> T trueToMean(T ex,
                                                               T ey,
                                                               T alphaV)

Computes the mean latitude argument from the eccentric latitude argument.

Type Parameters:

T - Type of the field elements

Parameters:

ex - e cos(ω), first component of circular eccentricity vector

ey - e sin(ω), second component of circular eccentricity vector

alphaV - = V + ω true latitude argument (rad)

Returns:

the mean latitude argument.

meanToTrue

public static <T extends CalculusFieldElement<T>> T meanToTrue(T ex,
                                                               T ey,
                                                               T alphaM)

Computes the true latitude argument from the eccentric latitude argument.

Type Parameters:

T - Type of the field elements

Parameters:

ex - e cos(ω), first component of circular eccentricity vector

ey - e sin(ω), second component of circular eccentricity vector

alphaM - = M + ω mean latitude argument (rad)

Returns:

the true latitude argument.

convertAlpha

public static <T extends CalculusFieldElement<T>> T convertAlpha(PositionAngleType oldType,
                                                                 T alpha,
                                                                 T ex,
                                                                 T ey,
                                                                 PositionAngleType newType)

Convert argument of latitude.

Type Parameters:

T - field type

Parameters:

oldType - old position angle type

alpha - old value for argument of latitude

ex - ex

ey - ey

newType - new position angle type

Returns:

convert argument of latitude

Since:

12.2