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

Class GHIJjsPolynomials

java.lang.Object

org.orekit.propagation.semianalytical.dsst.utilities.GHIJjsPolynomials

public class GHIJjsPolynomials
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

Constructor Summary

Constructors

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

Method Summary

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

GHIJjsPolynomials

public GHIJjsPolynomials(double k,
 double h,
 double alpha,
 double 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 double getGjs(int j,
 int s)

Get the G_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the G_js

getdGjsdk

public double 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 double 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 double 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 double 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 double getHjs(int j,
 int s)

Get the H_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the H_js

getdHjsdk

public double 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 double 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 double 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 double 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 double getIjs(int j,
 int s)

Get the I_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the I_js

getdIjsdk

public double 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 double 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 double 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 double 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 double getJjs(int j,
 int s)

Get the J_js coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the J_js

getdJjsdk

public double 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 double 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 double 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 double getdJjsdBeta(int j,
 int s)

Get the dJ_js / dβ coefficient.

Parameters:

j - j subscript

s - s subscript

Returns:

the J_js / dβ