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ISO 19389:2014

Space data and information transfer systems -- Conjunction data message

SKU: iso_064784_156952 Published by ISO Publication Year 2014 1 Edition 62 pages

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Overview

ISO 19389:2014 specifies a standard message format for use in exchanging spacecraft conjunction information between originators of Conjunction Assessments (CAs) and satellite owner/operators and other authorized parties. Such exchanges are used to inform satellite owner/operators of conjunctions between objects in space to enable consistent warning by different organizations employing diverse CA techniques.

ISO 19389:2014 will:

facilitate interoperability and enable consistent warning between data originators who supply CA and the satellite owner/operators who use it;
facilitate automation for the CA processes; and
provide critical information to enable timely CA decisions.

This document includes requirements and criteria that the message format has been designed to meet (see Annex D). Also included are informative descriptions of conjunction information pertinent to performing CA (see Annex E).

ISO 19389:2014 is applicable to satellite operations in all environments in which close approaches and collisions among satellites are concerns. It contains the specification for a Conjunction Data Message (CDM) designed for applications involving conjunction information interchange between originators of CAs and recipients. Conjunction information includes data types such as miss distance, probability of collision, Time of Closest Approach (TCA), and closest approach relative position and velocity. Further information describing the conjunction information contained in this message can be found in section 3 and Annex E.

This message is suited for exchanges that involve manual or automated interaction. The attributes of a CDM make it suitable for use in machine-to-machine interfaces because of the large amount of data typically present. The CDM is self contained. However, additional information could be specified in an Interface Control Document (ICD) written jointly by the service originator and recipients.

It is desirable that CDM originators maintain consistency with respect to the optional keywords provided in their implementations; i.e., it is desirable that the composition of the CDMs provided not change on a frequent basis.

ISO 19389:2014 is applicable only to the message format and content, but not to its transmission nor to the algorithms used to produce the data within. The method of transmitting the message between exchange partners is beyond the scope of this document and could be specified in an ICD.

The methods used to predict conjunctions and calculate the probability of collision, and the definition of the conjunction assessment accuracy underlying a particular CDM, are also outside the scope of ISO 19389:2014 (the interested reader can consult references in Annex F).

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GST REG No R119441681
QST REG No R1006017360

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ISO 19389:2014

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