Package org.orekit.models.earth

This package provides models that simulate certain physical phenomena of Earth and the near-Earth environment.

See: Description

Interface Summary

Interface	Description
EarthShape	All models of Earth's shape have some common properties that are not shared with arbitrary BodyShapes.
IonosphericModel	Defines a ionospheric model, used to calculate the path delay imposed to electro-magnetic signals between an orbital satellite and a ground station.
TroposphericModel	Defines a tropospheric model, used to calculate the path delay imposed to electro-magnetic signals between an orbital satellite and a ground station.

Class Summary

Class	Description
EarthITU453AtmosphereRefraction	Implementation of refraction model for Earth exponential atmosphere based on ITU-R P.834-7 recommendation.
EarthStandardAtmosphereRefraction	Implementation of refraction model for Earth standard atmosphere.
FixedTroposphericDelay	A static tropospheric model that interpolates the actual tropospheric delay based on values read from a configuration file (tropospheric-delay.txt) via the DataProvidersManager.
Geoid	A geoid is a level surface of the gravity potential of a body.
GeoMagneticElements	Contains the elements to represent a magnetic field at a single point.
GeoMagneticField	Used to calculate the geomagnetic field at a given geodetic point on earth.
GeoMagneticFieldFactory	Factory for different GeoMagneticField models.
GeoMagneticModelLoader	Loads geomagnetic field models from a given input stream.
KlobucharIonoCoefficientsLoader	Loads Klobuchar-Style ionospheric coefficients a given input stream.
KlobucharIonoModel	Klobuchar ionospheric delay model.
MariniMurrayModel	The Marini-Murray tropospheric delay model for laser ranging.
ReferenceEllipsoid	A Reference Ellipsoid for use in geodesy.
SaastamoinenModel	The modified Saastamoinen model.

Enum Summary

Enum	Description
GeoMagneticFieldFactory.FieldModel	The currently supported geomagnetic field models.

Package org.orekit.models.earth Description

This package provides models that simulate certain physical phenomena of Earth and the near-Earth environment.

Currently the following models are included:

• Tropospheric Delay
• Geomagnetic Field
• Geoid

Geoid

A Geoid is an equipotential surface of Earth's gravity field. This package provides the means to compute a Geoid from the gravity field harmonic coefficients, as in the following example. See the comment for Geoid for some important caveats.

 ReferenceEllipsoid ellipsoid
         = new ReferenceEllilpsoid(a, f, bodyFrame, GM, spin);
 Geoid geoid = new Geoid(
         GravityFieldFactory.getNormalizedProvider(degree, order),
         ellipsoid);
 double undulation = geoid.getUndulation(lat, lon, date);
 

Author:

T. Neidhart, E. Ward