org.orekit.data
Class PoissonSeries

java.lang.Object
  org.orekit.data.PoissonSeries

All Implemented Interfaces:

Serializable

public class PoissonSeries
extends Object
implements Serializable

Class representing a Poisson series for nutation or ephemeris computations.

A Poisson series is composed of a time polynomial part and a non-polynomial part which consist in summation series. The series terms are harmonic functions (combination of sines and cosines) of polynomial arguments. The polynomial arguments are combinations of luni-solar or planetary elements.

Author:

Luc Maisonobe

See Also:

SeriesTerm, Serialized Form

Constructor Summary

PoissonSeries(InputStream stream, double factor, String name)
Build a Poisson series from an IERS table file.

Method Summary

double	value(double t, BodiesElements elements) Compute the value of the development for the current date.
double[]	value(double t, BodiesElements elements, BodiesElements elementsP) Compute the value of the development for the current date and its first time derivative.

Methods inherited from class java.lang.Object

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

Constructor Detail

PoissonSeries

public PoissonSeries(InputStream stream,
                     double factor,
                     String name)
              throws OrekitException

Build a Poisson series from an IERS table file.

Parameters:

stream - stream containing the IERS table

factor - multiplicative factor to use for coefficients

name - name of the resource file (for error messages only)

Throws:

OrekitException - if stream is null or the table cannot be parsed

Method Detail

value

public double value(double t,
                    BodiesElements elements)

Compute the value of the development for the current date.

Parameters:

t - current date

elements - luni-solar and planetary elements for the current date

Returns:

current value of the development

value

public double[] value(double t,
                      BodiesElements elements,
                      BodiesElements elementsP)

Compute the value of the development for the current date and its first time derivative.

Parameters:

t - current date

elements - luni-solar and planetary elements for the current date

elementsP - luni-solar and planetary time derivative elements for the current date

Returns:

current value of the development