Package org.orekit.forces.gravity.potential

Interface UnnormalizedSphericalHarmonicsProvider

All Superinterfaces:

SphericalHarmonicsProvider, TideSystemProvider

public interface UnnormalizedSphericalHarmonicsProvider
extends SphericalHarmonicsProvider

Interface used to provide un-normalized spherical harmonics coefficients.

Un-normalized spherical harmonics coefficients are fine for small degrees. At high degree and order the un-normalized coefficients are not representable in a double. NormalizedSphericalHarmonicsProvider is recommended for high precision applications.

Since:

6.0

Author:

Luc Maisonobe

See Also:

• GravityFields

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	UnnormalizedSphericalHarmonicsProvider.UnnormalizedSphericalHarmonics	Un-normalized spherical harmonics coefficients evaluated at a specific instant.

Method Summary

Modifier and Type	Method	Description
default double	getUnnormalizedC20(AbsoluteDate date)	Get the un-normalized coefficient of degree 2 and order 0 at a specific instance in time.
UnnormalizedSphericalHarmonicsProvider.UnnormalizedSphericalHarmonics	onDate(AbsoluteDate date)	Get the un-normalized spherical harmonic coefficients at a specific instance in time.

Methods inherited from interface org.orekit.forces.gravity.potential.SphericalHarmonicsProvider

getAe, getMaxDegree, getMaxOrder, getMu, getReferenceDate

Methods inherited from interface org.orekit.forces.gravity.potential.TideSystemProvider

getTideSystem

Method Details

onDate

UnnormalizedSphericalHarmonicsProvider.UnnormalizedSphericalHarmonics onDate(AbsoluteDate date)

Get the un-normalized spherical harmonic coefficients at a specific instance in time.

Parameters:

date - of evaluation (may be null if model is not time-dependent)

Returns:

un-normalized coefficients on date.

Since:

6.1

getUnnormalizedC20

default double getUnnormalizedC20(AbsoluteDate date)

Get the un-normalized coefficient of degree 2 and order 0 at a specific instance in time.

Parameters:

date - of evaluation (may be null if model is not time-dependent)

Returns:

un-normalized C20 on date.

Since:

12.1