ISO 20214:2015旨在作为高级系统工程参考，使工程师能够更好地理解保护空间系统所需的分层安全概念。因此，本文件是空间数据系统（SASD）的安全体系结构。 该体系结构使用CCSDS体系结构工作组开发的空间数据系统参考体系结构（参考[B1]）中描述的视图。 SASD将用于: ? 建立一个全面的CCSDS概念框架，将安全性纳入空间任务的数据系统； ? 定义通用语言和表示法，以便能够轻松传达空间数据系统安全领域的风险、要求和解决方案； ? 为执行太空任务的安全架构师提供信息源，用于开发系统安全设计； ? 以一致的方式促进标准的开发，以便任何标准都可以与系统中的其他适当标准一起使用。

ISO 20214:2015 is intended as a high-level systems engineering reference to enable engineers to better understand the layered security concepts required to secure a space system. As such, this document is a Security Architecture for Space Data Systems (SASDS). This architecture uses the views described in the Reference Architecture for Space Data Systems (reference [B1]) developed by the CCSDS Architecture Working Group. The SASDS will be used: ? to establish an overall CCSDS conceptual framework for the incorporation of security into the data systems of space missions; ? to define common language and representation so that risks, requirements, and solutions in the area of security within space data systems can be readily communicated; ? to provide a source of information for the security architects on a space mission to use to develop the system security design; ? to facilitate development of standards in a consistent way so that any standard can be used with other appropriate standards in a system.