Package org.orekit.models.earth

package org.orekit.models.earth

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

Currently the following models are included:

• Tropospheric Delay
• Ionospheric Delay
• Global weather
• Geomagnetic Field
• Geoid
• Atmospheric refraction
• Displacement of ground points
• Tessellation of zones of interest as tiles
• Sampling of zones of interest as grids of points

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

Related Packages

Package	Description
org.orekit.models	Top level package for physical models.
org.orekit.models.earth.atmosphere	This package provides the atmosphere model interface and several implementations.
org.orekit.models.earth.displacement	This package provides models computing reference points displacements on Earth surface.
org.orekit.models.earth.ionosphere	This package provides models that simulate the impact of the ionosphere.
org.orekit.models.earth.tessellation	This package provides ways to do tessellation and sampling of zones of interest over an ellipsoid surface.
org.orekit.models.earth.troposphere	This package provides models that simulate the impact of the troposphere.
org.orekit.models.earth.weather	This package provides models that simulate global weather conditions on Earth.

Class	Description
EarthShape	All models of Earth's shape have some common properties that are not shared with arbitrary BodyShapes.
EarthStandardAtmosphereRefraction	Implementation of refraction model for Earth standard atmosphere.
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.
GeoMagneticFieldFactory.FieldModel	The currently supported geomagnetic field models.
GeoMagneticFields	Methods for obtaining geomagnetic fields.
GeoMagneticModelLoader	Loads geomagnetic field models from a given input stream.
GeoMagneticModelParser	Loads geomagnetic field models from a given input stream.
ITURP834AtmosphericRefraction	Implementation of refraction model for Earth exponential atmosphere based on ITU-R P.834 recommendation.
LazyLoadedGeoMagneticFields	Loads magnetic fields on request and can be configured after creation.
ReferenceEllipsoid	A Reference Ellipsoid for use in geodesy.