本文件就用于开发、维护和操作空间系统软件的过程和产品定义了一套软件产品保证要求。它为定义在整个软件生命周期（从项目概念到软件退役）中应用和维护的软件产品保证活动提供了统一的基础。 本文件主要适用于空间软件段和地面软件段的关键软件（例如与空间段直接接口的软件）。

This document defines a set of software product assurance requirements in terms of processes and products to be used for the development, maintenance and operation of software for space systems. It provides a uniform basis for defining the software product assurance activities to be applied and maintained throughout the whole software life cycle, from project conception until the software retirement. This document mainly applies to the space software segment and critical software of ground software segment (e.g. the software which is directly interface to the space segment).