BS ISO 21460:2015定义了接近-1空间链路协议物理层。 信道连接过程规范、频带规定和 分配、呼叫通道、极化、调制、数据速率和性能 要求在本文件中定义。目前，物理层仅定义火星在UHF频率下的运行 环境数据链路层在CCSDS推荐的两个独立标准中定义，分别为:， 邻近1空间链路协议编码和同步子层（参考文献[2]），以及 接近-1空间链路协议数据链路层（参考文献[3]）。本推荐标准未规定单独的实施或产品；在真实系统中实现服务接口；执行程序所需的方法或技术；或配置和控制协议所需的管理活动。购买本文件时可获得的所有当前修订均包含在购买本文件中。

BS 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]).This Recommended Standard does not specifyindividual implementations or products;implementation of service interfaces within real systems;the methods or technologies required to perform the procedures; orthe management activities required to configure and control the protocol.All current amendments available at time of purchase are included with the purchase of this document.