标准解读
《GB/T 45434.1-2025 中国标准时间 第1部分：通则》是关于中国标准时间（CST）的一系列国家标准中的首个部分，主要规定了与CST相关的术语定义、基本原则以及通用要求。该标准旨在为涉及时间服务的各类应用提供统一的时间基准和技术指导。
在术语和定义章节中，明确了“中国标准时间”是指基于国际原子时并经闰秒调整后与世界协调时保持一致的时间系统；同时对其他相关概念如“时间频率标准”、“时间同步”等进行了界定，确保行业内对于这些术语的理解一致性。
基本原则方面强调了CST应具备高精度、高稳定性和可靠性，以满足不同领域对时间信息的需求。此外还提出了时间服务需遵循安全性原则，在传输过程中保证数据不被篡改或泄露。
通用要求部分详细列出了CST系统的组成结构及其功能要求，包括但不限于时间源的选择与配置、时间信号的生成与分发机制、用户端接收设备的技术规格等。同时也涵盖了测试验证方法及性能指标评价体系等内容，确保整个CST体系能够高效准确地运行。
如需获取更多详尽信息，请直接参考下方经官方授权发布的权威标准文档。
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- 2025-03-28 颁布
- 2025-03-28 实施
文档简介
ICS33.060
CCSA50
中华人民共和国国家标准
GB/T45434.1—2025
中国标准时间第1部分：通则
Chinastandardtime—Part1：Generalprinciple
2025⁃03⁃28发布2025⁃03⁃28实施
国家市场监督管理总局
国家标准化管理委员会发布
GB/T45434.1—2025
目次
前言··························································································································Ⅲ
引言··························································································································Ⅳ
1范围·······················································································································1
2规范性引用文件········································································································1
3术语、定义和缩略语···································································································1
3.1术语和定义········································································································1
3.2缩略语··············································································································2
4概述·······················································································································2
5CST要求················································································································2
5.1产生流程···········································································································2
5.2资源要求···········································································································3
5.3性能要求···········································································································3
6中国标准时间物理时要求····························································································3
6.1系统要求···········································································································3
6.2资源要求···········································································································3
6.3性能要求···········································································································4
7比对链路要求···········································································································4
7.1一般要求···········································································································4
7.2性能要求···········································································································4
8信息发布要求···········································································································4
8.1综合信息···········································································································4
8.2授时信息···········································································································4
9授时服务要求···········································································································4
9.1天基授时···········································································································4
9.2地基授时···········································································································4
附录A（资料性）CST计算方法······················································································6
A.1数据资源···········································································································6
A.2技术方法···········································································································6
Ⅰ
GB/T45434.1—2025
前言
本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规
定起草。
本文件是GB/T45434《中国标准时间》的第1部分。GB/T45434已经发布了以下部分：
——第1部分：通则；
——第2部分：元数据；
——第3部分：公报。
请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。
本文件由中央军委装备发展部提出。
本文件由全国北斗卫星导航标准化技术委员会（SAC/TC544）归口。
本文件起草单位：中国计量科学研究院、中国卫星导航工程中心、北京卫星导航中心、北京无线电
计量测试研究所。
本文件主要起草人：方向、焦文海、王玉琢、张爱敏、史丰丰、张升康、王学运、刘莹、徐清华、徐金锋。
Ⅲ
GB/T45434.1—2025
引言
标准时间广泛应用于通信、交通、金融以及科学研究和国防建设等诸多方面，影响着人类生产生活
的方方面面，在现代社会中发挥着不可替代的作用。GB/T45434旨在明确中国标准时间产生、管理与
服务的准则。拟由七个部分构成：
——第1部分：通则。目的在于确立适用于中国标准时间的产生、保持、比对、发布和授时服务的
基本要求。
——第2部分：元数据。目的在于确立适用于中国标准时间产生与发布涉及数据资源的内容和格
式，定义元数据实体及元数据属性。
——第3部分：公报。目的在于确立适用于中国标准时间公报编制的方法和要求。
——第4部分：基准钟。目的在于确立适用于中国标准时间产生的基准钟的报数、使用和评估等
相关要求。
——第5部分：比对链路。目的在于确立适用于中国标准时间产生的北斗/全球卫星导航系统
（GNSS）、卫星双向和光纤时间频率比对链路的使用、管理与维护等相关要求。
——第6部分：发播。目的在于确立适用于技术机构发播中国标准时间信号的要求。
——第7部分：监测。目的在于确立适用于技术机构监测中国标准时间信号的要求。
Ⅳ
GB/T45434.1—2025
中国标准时间第1部分：通则
1范围
本文件规定了中国标准时间的产生、保持、比对、发布和授时服务要求。
本文件适用于中国标准时间的产生、管理与服务。
2规范性引用文件
下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文
件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有修改单）适用于本
文件。
GB/T39267北斗卫星导航术语
GB/T45434.3中国标准时间第3部分：公报
JJF1180时间频率计量名词术语及定义
3术语、定义和缩略语
3.1术语和定义
GB/T39267和JJF1180界定的以及下列术语和定义适用于本文件。
3.1.1
基准钟primary/secondlyfrequencystandard
国际单位制秒或秒次级定义的复现装置。
3.1.2
钟组时标clockensembl
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