The SEDRIS Data Representation Model
APPENDIX A - Classes
GEI Location 3D

Class Name: GEI Location 3D

Superclass - <Location 3D>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance of this DRM class specifies a coordinate within the Geocentric Equatorial Inertial (GEI) 3D Spatial Reference Frame (SRF).

See [I18026] for a complete definition.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

This class appears on only one page of the DRM class diagram.

Example

  1. GEI provides a convenient spatial reference frame for
    1. Defining the positions of orbital satellites.
    2. Describing space vehicle dynamics.
    3. Providing astronomical data.

FAQs

Is GEI an inertial coordinate system?

GEI is independent of the Earth's surface, and the Earth's position with respect to the Sun -- it is fully inertial.

Where can users obtain further information on GEI?

See the Spatial Reference Model (SRM) for additional details.

Constraints

Component of (two-way)(inherited)

Inherited Field Elements

This class has no inherited field elements.

Field Elements

SRM_GEI_Coordinate_3D coordinate;
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Last updated: May 15, 2003 Copyright © 2003 SEDRIS™