org.orekit.utils

Class LegendrePolynomials

java.lang.Object

org.orekit.utils.LegendrePolynomials

public class LegendrePolynomials
extends Object

Computes the P_nm(t) coefficients.

The computation of the Legendre polynomials is performed following: Heiskanen and Moritz, Physical Geodesy, 1967, eq. 1-62

Since:

11.0

Author:

Bryan Cazabonne

Constructor Summary

Constructors

Constructor and Description
LegendrePolynomials(int degree, int order, double t) Create Legendre polynomials for the given degree and order.

Method Summary

Modifier and Type	Method and Description
double	getPnm(int n, int m) Return the coefficient Pnm.

Methods inherited from class java.lang.Object

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

Constructor Detail

LegendrePolynomials

public LegendrePolynomials(int degree,
                           int order,
                           double t)

Create Legendre polynomials for the given degree and order.

Parameters:

degree - degree of the spherical harmonics

order - order of the spherical harmonics

t - argument for polynomials calculation

Method Detail

getPnm

public double getPnm(int n,
                     int m)

Return the coefficient P_nm.

Parameters:

n - index

m - index

Returns:

The coefficient P_nm