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ORbit Extrapolation KIT 9.1-SNAPSHOT API

1.

See: Description

Packages 
Package Description
org.orekit.attitudes
This package provides classes to represent simple attitudes.
org.orekit.bodies
This package provides interface to represent the position and geometry of space objects such as stars, planets or asteroids.
org.orekit.data
This package provide base classes for exploring the configured data directory tree and read external data that can be used by the library.
org.orekit.errors
This package provides classes to generate and handle exceptions.
org.orekit.estimation
This package is the top level package for orbit determination.
org.orekit.estimation.iod  
org.orekit.estimation.leastsquares
The leastsquares package provides an implementation of a batch least squares estimator engine to perform an orbit determination.
org.orekit.estimation.measurements
The measurements package defines everything that is related to orbit determination measurements.
org.orekit.estimation.measurements.modifiers  
org.orekit.files
Top level package for various parsers.
org.orekit.files.ccsds
This package provides a parser for orbit data stored in CCSDS Orbit Data Message format.
org.orekit.files.general
This package provides interfaces for orbit file representations and corresponding parsers.
org.orekit.files.sp3
This package provides a parser for orbit data stored in SP3 format.
org.orekit.forces
This package provides the interface for force models that will be used by the NumericalPropagator, as well as some classical spacecraft models for surface forces (spherical, box and solar array ...).
org.orekit.forces.drag
This package provides all drag-related forces.
org.orekit.forces.drag.atmosphere
This package provides the atmosphere model interface and several implementations.
org.orekit.forces.drag.atmosphere.data
This package provides classes to get atmospheric data, including solar flux and planetary geomagnetic indices.
org.orekit.forces.gravity
This package provides all gravity-related forces.
org.orekit.forces.gravity.potential
This package provides classes to read gravity field files and supports several different formats.
org.orekit.forces.maneuvers
This package provides models of simple maneuvers.
org.orekit.forces.radiation
This package provides all radiation pressure related forces.
org.orekit.frames
This package provides classes to handle frames and transforms between them.
org.orekit.gnss
This package provides classes related to GNSS applications.
org.orekit.models
Top level package for physical models.
org.orekit.models.earth
This package provides models that simulate certain physical phenomena of Earth and the near-Earth environment.
org.orekit.models.earth.tessellation
This package provides ways to do tessellation and sampling of zones of interest over an ellipsoid surface.
org.orekit.orbits
This package provides classes to represent orbits.
org.orekit.propagation
Propagation
org.orekit.propagation.analytical
Top level package for analytical propagators.
org.orekit.propagation.analytical.gnss
This package provides classes to propagate GNSS orbits.
org.orekit.propagation.analytical.tle
This package provides classes to read and extrapolate tle's.
org.orekit.propagation.conversion
This package provides tools to convert a given propagator or a set of SpacecraftState into another propagator.
org.orekit.propagation.events
This package provides interfaces and classes dealing with events occurring during propagation.
org.orekit.propagation.events.handlers
This package provides an interface and classes dealing with events occurrence only.
org.orekit.propagation.integration
Utilities for integration-based propagators (both numerical and semi-analytical).
org.orekit.propagation.numerical
Top level package for numerical propagators.
org.orekit.propagation.sampling
This package provides interfaces and classes dealing with step handling during propagation.
org.orekit.propagation.semianalytical
Top level package for semi-analytical propagators.
org.orekit.propagation.semianalytical.dsst
This package provides an implementation of the Draper Semi-analytical Satellite Theory (DSST).
org.orekit.propagation.semianalytical.dsst.forces
This package provides force models for Draper Semi-analytical Satellite Theory (DSST).
org.orekit.propagation.semianalytical.dsst.utilities
This package provides utilities for Draper Semi-analytical Satellite Theory (DSST).
org.orekit.propagation.semianalytical.dsst.utilities.hansen
This package provides Hansen coefficient related utilities for Draper Semi-analytical Satellite Theory (DSST).
org.orekit.time
This independent package provides classes to handle epochs, time scales, and to compare instants together.
org.orekit.utils
This package provides useful objects.

1. Purpose

OREKIT library is a low-level library for space mechanics projects. It is implemented in the JAVA language.

OREKIT project was initiated by CS with the following goals in mind:

2. Features

Orekit can be used for many purposes, from simple geometrical or orbital tools up to complex orbits propagators with several perturbing forces, maneuvers and discrete events. Here is a short list of the features offered by the library:

3. Dependency

OREKIT has only one dependency: the Hipparchus open-source library. This library provides mathematical tools for many purposes: geometry, polynomial equations, differential equations, and more... It is distributed under the business-friendly Apache Software License version 2.0.

OREKIT is based on several Hipparchus packages:

The use of Hipparchus is hidden in OREKIT as much as possible so users don't need to fully master this library. If they wish, they can limit themselves to understanding the simple classes Vector3D and Rotation from the geometry package, and the interface FirstOrderIntegrator from the ode package.

Author:
Luc Maisonobe, Thierry Ceolin, Fabien Maussion, Pascal Parraud, Véronique Pommier-Maurussane, Guylaine Prat
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