航天数据和信息传输系统.空间链路扩展(SLE).正向空间数据包业务

[中文适用范围]： 本推荐标准以抽象的方式从以下方面定义了FSP服务：a) 提供传输服务所需的操作；b) 与每个操作相关的参数数据；c) 调用每个操作产生的行为；以及d) 操作与产生的行为之间的关系及其有效顺序。本推荐标准未指定：a) 具体的实现或产品；b) 实际系统中实体或接口的实现；c) 向航天器发射空间数据包并从该航天器接收的信号中获取遥测帧以提取操作控制场所需的方法或技术；d) 通信所需的方法或技术；或e) 调度、配置和控制FSP服务所需的管理活动。注 – 虽然参考文献[1]中描述的FSP服务旨在处理各种数据包数据结构，但本版本的FSP推荐标准仅限于处理参考文献[6]中定义的空间数据包。本版本的FSP推荐标准专门针对通过参考文献[3]、[4]和[5]中定义的遥控协议栈传输的空间数据包。交叉支持参考模型（参考文献[1]）规定，FSP服务也可以与先进轨道系统协议栈结合使用，但该操作模式不在本版本推荐标准的范围内。 [外文原描述]： This document defines the Forward Space Packet (FSP) service in conformance with the transfer services specified in reference [1], Cross Support Reference Model―Part 1: SLE Services . The FSP service is a Space Link Extension (SLE) transfer service that enables a mission to send Space Packets to a spacecraft in sequence-controlled or expedited mode. This document defines, in an abstract manner, the FSP service in terms of: the operations necessary to provide the transfer service; the parameter data associated with each operation; the behaviors that result from the invocation of each operation; and the relationship between, and the valid sequence of, the operations and resulting behaviors. It does not specify: individual implementations or products; the implementation of entities or interfaces within real systems; the methods or technologies required to radiate Space Packets to a spacecraft and to acquire telemetry frames from the signals received from that spacecraft for extraction of the Operational Control Field; the methods or technologies required for communications; or the management activities necessary to schedule, configure, and control the FSP service. NOTE – While the FSP service as described in reference [1] is conceived to handle a variety of packet data structures, this version of the FSP Recommended Standard is restricted to the handling of Space Packets as defined in reference [6]. This version of the FSP Recommended Standard is specific to the transfer of Space Packets to be transmitted via the Telecommand protocol stack as defined in references [3], [4], and [5]. The Cross Support Reference Model (reference [1]) specifies that the FSP service may also be used in conjunction with the Advanced Orbiting System protocol stack, but that mode of operation is outside the scope of this version of the Recommended Standard. The FSP service is provided in the online delivery mode, as defined in reference [1]. The offline delivery mode is the subject of further study.