org.orekit.propagation.semianalytical.dsst.utilities

Class UpperBounds

java.lang.Object

org.orekit.propagation.semianalytical.dsst.utilities.UpperBounds

public class UpperBounds
extends Object

Utility class to compute upper bounds for truncation algorithms.

Author:

Pascal Parraud

Method Summary

Modifier and Type	Method and Description
static double	getDnl(double xx, double xpl, int n, int l) Get the upper bound value Dnl(Χ).
static <T extends CalculusFieldElement<T>> T	getDnl(T xx, T xpl, int n, int l) Get the upper bound value Dnl(Χ).
static double	getRnml(double gamma, int n, int l, int m, int eps, int irf) Get the upper bound value Rεn,m,l(γ).
static <T extends CalculusFieldElement<T>> T	getRnml(T gamma, int n, int l, int m, int eps, int irf) Get the upper bound value Rεn,m,l(γ).

Methods inherited from class java.lang.Object

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

Method Detail

getDnl

public static double getDnl(double xx,
                            double xpl,
                            int n,
                            int l)

Get the upper bound value D_n^l(Χ).

Parameters:

xx - value of Χ²

xpl - value of Χ * (Χ² / 2)^l

n - index n (power of a/R)

l - index l (power of eccentricity)

Returns:

the upper bound D_n^l(Χ)

getDnl

public static <T extends CalculusFieldElement<T>> T getDnl(T xx,
                                                           T xpl,
                                                           int n,
                                                           int l)

Get the upper bound value D_n^l(Χ).

Type Parameters:

T - the type of the field elements

Parameters:

xx - value of Χ²

xpl - value of Χ * (Χ² / 2)^l

n - index n (power of a/R)

l - index l (power of eccentricity)

Returns:

the upper bound D_n^l(Χ)

getRnml

public static double getRnml(double gamma,
                             int n,
                             int l,
                             int m,
                             int eps,
                             int irf)

Get the upper bound value R^ε_n,m,l(γ).

Parameters:

gamma - value of γ

n - index n

l - index l

m - index m

eps - ε value (+1/-1)

irf - retrograde factor I (+1/-1)

Returns:

the upper bound R^ε_n,m,l(γ)

getRnml

public static <T extends CalculusFieldElement<T>> T getRnml(T gamma,
                                                            int n,
                                                            int l,
                                                            int m,
                                                            int eps,
                                                            int irf)

Get the upper bound value R^ε_n,m,l(γ).

Type Parameters:

T - the type of the field elements

Parameters:

gamma - value of γ

n - index n

l - index l

m - index m

eps - ε value (+1/-1)

irf - retrograde factor I (+1/-1)

Returns:

the upper bound R^ε_n,m,l(γ)