本手册旨在介绍NASA-STD-4009《空间通信无线电系统（STRS）体系结构标准》中要求的基本原理，该标准是本手册的配套文件。还提供了支持示例和进一步说明，以澄清NASA-STD-4009的部分内容。还包括空间通信和导航（SCaN）试验台合作伙伴提出的问题，这些合作伙伴创建了STR的第一个空间实施。随着标准的发展，手册中将添加对过时信息的微小更正和更新。该手册旨在帮助NASA的读者和实施者- STD-4009了解标准。美国国家航空航天局认可。奥西。

The purpose of this Handbook is to present the rationale which underlays the requirements contained in NASA-STD-4009, Space Telecommunications Radio System (STRS) Architecture Standard, the companion document to this Handbook. Supporting examples and further descriptions for clarification of portions of NASA-STD-4009 are also provided. Answers prompted by questions from the Space Communications and Navigation (SCaN) Testbed partners, who created the first space implementation of STRS, are also included. As the Standard evolves, minor corrections and updates to obsolete information will be added to the Handbook. The Handbook is aimed at helping readers and implementers of NASA-STD-4009 understand the Standard. NASA Endorsed. OCE.