标准摘要
[中文适用范围]： 本推荐标准定义了邻近-1空间链路协议物理层。规范中的渠道连接过程、频带和指配、招乎信道、极化、调制、数据速率和性能要求在本文件中进行了定义。目前，物理层仅定义了火星环境中超高频（UHF）频率的操作。数据链路层由题为“邻近-1空间链路协议——编码与同步子层”（参考文献 [2]）和“邻近-1空间链路协议——数据链路层”（参考文献 [3]）的两份CCSDS推荐标准另行定义。 本推荐标准未指定以下内容：a) 个体实现或产品；b) 实际系统内服务接口的实现；c) 执行程序所需的方法或技术；或 d) 配置和控制协议所需的操作管理活动。 [外文原描述]： ISO 21460:2015 defines the Proximity-1 Space Link Protocol Physical Layer. The specification for the channel connection process, provision for frequency bands and assignments, hailing channel, polarization, modulation, data rates, and performance requirements are defined in this document. Currently, the Physical Layer only defines operations at UHF frequencies for the Mars environment. The Data Link Layer is defined in the two separate CCSDS Recommended Standards entitled, Proximity-1 Space Link Protocol?Coding and Synchronization Sublayer (reference [2]), and Proximity-1 Space Link Protocol?Data Link Layer (reference [3]). ISO 21460:2015 does not specify a) individual implementations or products; b) implementation of service interfaces within real systems; c) the methods or technologies required to perform the procedures; or d) the management activities required to configure and control the protocol.
英文名称Space data and information transfer systems — Proximity-1 space link protocol — Physical layer