org.orekit.utils

Interface IERSConventions.NutationCorrectionConverter

Enclosing class:

IERSConventions

public static interface IERSConventions.NutationCorrectionConverter

Interface for functions converting nutation corrections between δΔψ/δΔε to δX/δY.

• δΔψ/δΔε nutation corrections are used with the equinox-based paradigm.
• δX/δY nutation corrections are used with the Non-Rotating Origin paradigm.

Since:

6.1

Method Summary

Modifier and Type	Method and Description
double[]	toEquinox(AbsoluteDate date, double dX, double dY) Convert nutation corrections.
double[]	toNonRotating(AbsoluteDate date, double ddPsi, double ddEpsilon) Convert nutation corrections.

Method Detail

toNonRotating

double[] toNonRotating(AbsoluteDate date,
                       double ddPsi,
                       double ddEpsilon)
                throws OrekitException

Convert nutation corrections.

Parameters:

date - current date

ddPsi - δΔψ part of the nutation correction

ddEpsilon - δΔε part of the nutation correction

Returns:

array containing δX and δY

Throws:

OrekitException - if correction cannot be converted

toEquinox

double[] toEquinox(AbsoluteDate date,
                   double dX,
                   double dY)
            throws OrekitException

Convert nutation corrections.

Parameters:

date - current date

dX - δX part of the nutation correction

dY - δY part of the nutation correction

Returns:

array containing δΔψ and δΔε

Throws:

OrekitException - if correction cannot be converted