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

Class Name: EI 3D Location

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 Equatorial Inertial (EI) 3D SRF.

See [ISO/IEC 18026] 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. EI provides a convenient SRF for
    1. Defining the positions of orbital satellites.
    2. Describing space vehicle dynamics.
    3. Providing astronomical data.

FAQs

Is EI an inertial coordinate system?

EI 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 EI?

See the SRM for additional details.

Constraints

Component of (two-way) (inherited)

Inherited Field Elements

This class has no inherited field elements.

Field Elements

SRM_EI_3D_Coordinate coordinate; (notes)

Notes

Fields Notes


coordinate

 The coordinate field specifies the coordinate values.
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Last updated: July 16, 2004 Copyright © 2004 SEDRIS™