空间数据和信息传输系统. 通过数据中继卫星的2GHz码分多址接入(CDMA)链接用数据传输和伪随机噪声(PN)测距

[中文适用范围]： 本推荐标准定义了CDMA扩展频谱调制方案，包括：a) 为本规范的用户提供的服务；b) 扩展码格式；c) 生成和处理代码格式的过程。它不指定：a) 单独的实现或产品；b) 执行过程的方法或技术；c) 配置和控制系统的管理活动。 [外文原描述]： ISO 17810:2014 defines CDMA spread spectrum modulation schemes in terms of: a) the services provided to the users of this specification; b) spreading code formats; and c) the procedures performed to generate and process the code formats. It does not specify: a) individual implementations or products; b) the methods or technologies required to perform the procedures; or c) the management activities required to configure and control the system. ISO 17810:2014 provides only those parameter requirements relating to signal compatibility with the existing SNIP PN spread modulation systems (see C.1). There are many other types of requirements, not specifically related to PN spread modulation signal formats, which must be met to ensure system compatibility with existing SNIP hardware. Examples would include forward error correction coding format, data signal formats, etc. ISO 17810:2014 applies to the creation of agency standards and to the future data communications over space links between CCSDS agencies in cross-support situations. ISO 17810:2014 includes comprehensive specification of the data formats and procedures for inter-agency cross support. It is neither a specification of, nor a design for, real systems that may be implemented for existing or future missions. ISO 17810:2014 is to be invoked through the normal standards programs of each CCSDS agency, and is applicable to those missions for which cross support based on capabilities described in ISO 17810:2014 is anticipated. Where mandatory capabilities are clearly indicated in sections of ISO 17810:2014, they must be implemented when this document is used as a basis for cross support. Where options are allowed or implied, implementation of these options is subject to specific bilateral cross-support agreements between the agencies involved.