空间数据和信息传输系统.异步消息服务

[中文适用范围]： 该国际标准定义了用于任务数据系统通信的 CCSDS 异步消息服务 (AMS)。 该服务及其协议实现了一种体系结构概念，在该概念下，任务系统的模块（应用程序控制逻辑的不同顺序流，无论称为进程、任务还是线程）可以设计为独立运行，每个模块都产生和运行在不明确了解哪些其他模块当前正在运行的情况下消耗任务信息。 此类模块之间的通信关系是自行配置的；这往往会最大限度地减少模块化数据系统的开发和操作的复杂性。 [外文原描述]： ISO 17807:2013 defines a CCSDS Asynchronous Message Service (AMS) for mission data system communications. The service and its protocols implement an architectural concept under which the modules of mission systems, distinct sequential flows of application control logic, whether called processes, tasks, or threads, may be designed as if they were to operate in isolation, each one producing and consuming mission information without explicit awareness of which other modules are currently operating. Communication relationships among such modules are self-configuring; this tends to minimize complexity in the development and operations of modular data systems. A system built on this model is a society of generally autonomous interoperating modules that may fluctuate freely over time in response to changing mission objectives, module functional upgrades, and recovery from individual module failure. The purpose of AMS, then, is to reduce mission cost and risk by providing standard, reusable infrastructure for the exchange of information among data system modules in a manner that is simple to use, highly automated, flexible, robust, scalable, and efficient. ISO 17807:2013 specifies the protocol procedures and data units that accomplish automatic configuration of AMS communication relationships, dynamic reconfiguration of those relationships during operations, and the use of those relationships to accomplish the exchange of mission information among data system modules.