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

Class CjSjCoefficient

java.lang.Object

org.orekit.propagation.semianalytical.dsst.utilities.CjSjCoefficient

public class CjSjCoefficient
extends Object

Compute the S_j(k, h) and the C_j(k, h) series and their partial derivatives with respect to k and h.

Those series are given in Danielson paper by expression 2.5.3-(5):

C_j(k, h) + i S_j(k, h) = (k+ih)^j

The C_j(k, h) and the S_j(k, h) elements are store as an ArrayList of Complex number, the C_j(k, h) being represented by the real and the S_j(k, h) by the imaginary part.

Constructor Summary

Constructors

Constructor	Description
CjSjCoefficient(double k, double h)	Cj(k, h) and Sj(k, h) constructor.

Method Summary

Modifier and Type	Method	Description
double	getCj(int j)	Get the Cj coefficient.
double	getDcjDh(int j)	Get the dCj / dh coefficient.
double	getDcjDk(int j)	Get the dCj / dk coefficient.
double	getDsjDh(int j)	Get the dSj / dh coefficient.
double	getDsjDk(int j)	Get the dSj / dk coefficient.
double	getSj(int j)	Get the Sj coefficient.

Methods inherited from class java.lang.Object

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

Constructor Detail

CjSjCoefficient

public CjSjCoefficient(double k,
                       double h)

C_j(k, h) and S_j(k, h) constructor.

Parameters:

k - k value

h - h value

Method Detail

getCj

public double getCj(int j)

Get the C_j coefficient.

Parameters:

j - order

Returns:

C_j

getSj

public double getSj(int j)

Get the S_j coefficient.

Parameters:

j - order

Returns:

S_j

getDcjDk

public double getDcjDk(int j)

Get the dC_j / dk coefficient.

Parameters:

j - order

Returns:

dC_j / d_k

getDsjDk

public double getDsjDk(int j)

Get the dS_j / dk coefficient.

Parameters:

j - order

Returns:

dS_j / d_k

getDcjDh

public double getDcjDh(int j)

Get the dC_j / dh coefficient.

Parameters:

j - order

Returns:

dC_i / d_k

getDsjDh

public double getDsjDh(int j)

Get the dS_j / dh coefficient.

Parameters:

j - order

Returns:

dS_j / d_h