Package org.orekit.propagation.semianalytical.dsst.utilities

Class FieldGHIJjsPolynomials<T extends CalculusFieldElement<T>>

java.lang.Object

org.orekit.propagation.semianalytical.dsst.utilities.FieldGHIJjsPolynomials<T>

Type Parameters:

T - type of the field elements

public class FieldGHIJjsPolynomials<T extends CalculusFieldElement<T>>
extends Object

Compute the G_js, H_js, I_js and J_js polynomials in the equinoctial elements h, k and the direction cosines α and β and their partial derivatives with respect to k, h, α and β.

The expressions used are equations 4.1-(10) from the Danielson paper.

Author:

Lucian Barbulescu, Bryan Cazabonne (field translation)

Constructor Summary

Constructors

Constructor	Description
FieldGHIJjsPolynomials(T k, T h, T alpha, T beta)	Create a set of Gjs, Hjs, Ijs and Jjs polynomials.

Method Summary

Modifier and Type	Method	Description
T	getdGjsdAlpha(int j, int s)	Get the dGjs / dα coefficient.
T	getdGjsdBeta(int j, int s)	Get the dGjs / dβ coefficient.
T	getdGjsdh(int j, int s)	Get the dGjs / dh coefficient.
T	getdGjsdk(int j, int s)	Get the dGjs / dk coefficient.
T	getdHjsdAlpha(int j, int s)	Get the dHjs / dα coefficient.
T	getdHjsdBeta(int j, int s)	Get the dHjs / dβ coefficient.
T	getdHjsdh(int j, int s)	Get the dHjs / dh coefficient.
T	getdHjsdk(int j, int s)	Get the dHjs / dk coefficient.
T	getdIjsdAlpha(int j, int s)	Get the dIjs / dα coefficient.
T	getdIjsdBeta(int j, int s)	Get the dIjs / dβ coefficient.
T	getdIjsdh(int j, int s)	Get the dIjs / dh coefficient.
T	getdIjsdk(int j, int s)	Get the dIjs / dk coefficient.
T	getdJjsdAlpha(int j, int s)	Get the dJjs / dα coefficient.
T	getdJjsdBeta(int j, int s)	Get the dJjs / dβ coefficient.
T	getdJjsdh(int j, int s)	Get the dJjs / dh coefficient.
T	getdJjsdk(int j, int s)	Get the dJjs / dk coefficient.
T	getGjs(int j, int s)	Get the Gjs coefficient.
T	getHjs(int j, int s)	Get the Hjs coefficient.
T	getIjs(int j, int s)	Get the Ijs coefficient.
T	getJjs(int j, int s)	Get the Jjs coefficient.

Methods inherited from class java.lang.Object

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

Constructor Details

FieldGHIJjsPolynomials

public FieldGHIJjsPolynomials(T k,
 T h,
 T alpha,
 T beta)

Create a set of G_js, H_js, I_js and J_js polynomials.

Parameters:

k - X component of the eccentricity vector

h - Y component of the eccentricity vector

alpha - direction cosine α

beta - direction cosine β

Method Details

getGjs

public T getGjs(int j,
 int s)

Get the G_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the G_js

getdGjsdk

public T getdGjsdk(int j,
 int s)

Get the dG_js / dk coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the dG_js / dk

getdGjsdh

public T getdGjsdh(int j,
 int s)

Get the dG_js / dh coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the dG_js / dh

getdGjsdAlpha

public T getdGjsdAlpha(int j,
 int s)

Get the dG_js / dα coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the dG_js / dα

getdGjsdBeta

public T getdGjsdBeta(int j,
 int s)

Get the dG_js / dβ coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the dG_js / dβ

getHjs

public T getHjs(int j,
 int s)

Get the H_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the H_js

getdHjsdk

public T getdHjsdk(int j,
 int s)

Get the dH_js / dk coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the H_js / dk

getdHjsdh

public T getdHjsdh(int j,
 int s)

Get the dH_js / dh coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the H_js / dh

getdHjsdAlpha

public T getdHjsdAlpha(int j,
 int s)

Get the dH_js / dα coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the H_js / dα

getdHjsdBeta

public T getdHjsdBeta(int j,
 int s)

Get the dH_js / dβ coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the H_js / dβ

getIjs

public T getIjs(int j,
 int s)

Get the I_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the I_js

getdIjsdk

public T getdIjsdk(int j,
 int s)

Get the dI_js / dk coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the I_js / dk

getdIjsdh

public T getdIjsdh(int j,
 int s)

Get the dI_js / dh coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the I_js / dh

getdIjsdAlpha

public T getdIjsdAlpha(int j,
 int s)

Get the dI_js / dα coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the I_js / dα

getdIjsdBeta

public T getdIjsdBeta(int j,
 int s)

Get the dI_js / dβ coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the I_js / dβ

getJjs

public T getJjs(int j,
 int s)

Get the J_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the J_js

getdJjsdk

public T getdJjsdk(int j,
 int s)

Get the dJ_js / dk coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the J_js / dk

getdJjsdh

public T getdJjsdh(int j,
 int s)

Get the dJ_js / dh coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the J_js / dh

getdJjsdAlpha

public T getdJjsdAlpha(int j,
 int s)

Get the dJ_js / dα coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the J_js / dα

getdJjsdBeta

public T getdJjsdBeta(int j,
 int s)

Get the dJ_js / dβ coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the J_js / dβ