ISO 19389:2014规定了一种标准消息格式，用于会合评估发起者与卫星所有者/运营者和其他授权方之间交换航天器会合信息。这种交换用于通知卫星所有者/运营商空间物体之间的会合，以使采用不同CA技术的不同组织能够发出一致的警告。 ISO 19389:2014将: 促进互操作性，并在提供CA的数据发起者和使用CA的卫星所有者/运营商之间实现一致的警告； 促进CA流程的自动化；和 提供关键信息，以便及时做出CA决策。 本文件包括电文格式旨在满足的要求和标准（见附件D）。还包括与执行CA相关的连接信息的信息性描述（见附录E）。 ISO 19389:2014适用于所有关注卫星之间近距离接近和碰撞的环境中的卫星运行。它包含连接数据消息（CDM）的规范，该规范是为涉及CA的发起者和接收者之间的连接信息交换的应用而设计的。合取信息包括脱靶距离、碰撞概率、最近接近时间（TCA）、最近接近相对位置和速度等数据类型。描述该消息中包含的连词信息的更多信息可在第3节和附录E中找到。 此消息适用于涉及手动或自动交互的交换。CDM的属性使其适合用于机器对机器接口，因为通常存在大量数据。清洁发展机制是独立的。然而，可以在由服务发起者和接收者联合编写的接口控制文档(ICD)中指定附加信息。 希望清洁发展机制发起者在其实施中提供的可选关键字方面保持一致性；即，希望所提供的CDMs的组成不频繁改变。 ISO 19389:2014仅适用于消息格式和内容，但不适用于其传输或用于生成其中数据的算法。在exchange伙伴之间传输消息的方法超出了本文档的范围，可以在ICD中指定。用于预测接合和计算碰撞概率的方法，以及特定清洁发展机制下的接合评估准确性的定义，也不在ISO 19389:2014的范围之内（感兴趣的读者可查阅附件F中的参考文献）。

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:

1. facilitate interoperability and enable consistent warning between data originators who supply CA and the satellite owner/operators who use it;
2. facilitate automation for the CA processes; and
3. 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).