標準解讀

《GB/T 45434.1-2025 中國標準時間 第1部分：通則》是關于中國標準時間（CST）的一系列國家標準中的首個部分，主要規定了與CST相關的術語定義、基本原則以及通用要求。該標準旨在為涉及時間服務的各類應用提供統一的時間基準和技術指導。

在術語和定義章節中，明確了“中國標準時間”是指基于國際原子時并經閏秒調整后與世界協調時保持一致的時間系統；同時對其他相關概念如“時間頻率標準”、“時間同步”等進行了界定，確保行業內對于這些術語的理解一致性。

基本原則方面強調了CST應具備高精度、高穩定性和可靠性，以滿足不同領域對時間信息的需求。此外還提出了時間服務需遵循安全性原則，在傳輸過程中保證數據不被篡改或泄露。

通用要求部分詳細列出了CST系統的組成結構及其功能要求，包括但不限于時間源的選擇與配置、時間信號的生成與分發機制、用戶端接收設備的技術規格等。同時也涵蓋了測試驗證方法及性能指標評價體系等內容，確保整個CST體系能夠高效準確地運行。


如需獲取更多詳盡信息，請直接參考下方經官方授權發布的權威標準文檔。

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ICS33.060

CCSA50

中華人民共和國國家標準

GB/T45434.1—2025

中國標準時間第1部分：通則

Chinastandardtime—Part1：Generalprinciple

2025?03?28發布2025?03?28實施

國家市場監督管理總局

國家標準化管理委員會發布

GB/T45434.1—2025

目次

前言··························································································································Ⅲ

引言··························································································································Ⅳ

1范圍·······················································································································1

2規范性引用文件········································································································1

3術語、定義和縮略語···································································································1

3.1術語和定義········································································································1

3.2縮略語··············································································································2

4概述·······················································································································2

5CST要求················································································································2

5.1產生流程···········································································································2

5.2資源要求···········································································································3

5.3性能要求···········································································································3

6中國標準時間物理時要求····························································································3

6.1系統要求···········································································································3

6.2資源要求···········································································································3

6.3性能要求···········································································································4

7比對鏈路要求···········································································································4

7.1一般要求···········································································································4

7.2性能要求···········································································································4

8信息發布要求···········································································································4

8.1綜合信息···········································································································4

8.2授時信息···········································································································4

9授時服務要求···········································································································4

9.1天基授時···········································································································4

9.2地基授時···········································································································4

附錄A（資料性）CST計算方法······················································································6

A.1數據資源···········································································································6

A.2技術方法···········································································································6

Ⅰ

GB/T45434.1—2025

前言

本文件按照GB/T1.1—2020《標準化工作導則第1部分：標準化文件的結構和起草規則》的規

定起草。

本文件是GB/T45434《中國標準時間》的第1部分。GB/T45434已經發布了以下部分：

——第1部分：通則；

——第2部分：元數據；

——第3部分：公報。

請注意本文件的某些內容可能涉及專利。本文件的發布機構不承擔識別專利的責任。

本文件由中央軍委裝備發展部提出。

本文件由全國北斗衛星導航標準化技術委員會（SAC/TC544）歸口。

本文件起草單位：中國計量科學研究院、中國衛星導航工程中心、北京衛星導航中心、北京無線電

計量測試研究所。

本文件主要起草人：方向、焦文海、王玉琢、張愛敏、史豐豐、張升康、王學運、劉瑩、徐清華、徐金鋒。

Ⅲ

GB/T45434.1—2025

引言

標準時間廣泛應用于通信、交通、金融以及科學研究和國防建設等諸多方面，影響著人類生產生活

的方方面面，在現代社會中發揮著不可替代的作用。GB/T45434旨在明確中國標準時間產生、管理與

服務的準則。擬由七個部分構成：

——第1部分：通則。目的在于確立適用于中國標準時間的產生、保持、比對、發布和授時服務的

基本要求。

——第2部分：元數據。目的在于確立適用于中國標準時間產生與發布涉及數據資源的內容和格

式，定義元數據實體及元數據屬性。

——第3部分：公報。目的在于確立適用于中國標準時間公報編制的方法和要求。

——第4部分：基準鐘。目的在于確立適用于中國標準時間產生的基準鐘的報數、使用和評估等

相關要求。

——第5部分：比對鏈路。目的在于確立適用于中國標準時間產生的北斗/全球衛星導航系統

（GNSS）、衛星雙向和光纖時間頻率比對鏈路的使用、管理與維護等相關要求。

——第6部分：發播。目的在于確立適用于技術機構發播中國標準時間信號的要求。

——第7部分：監測。目的在于確立適用于技術機構監測中國標準時間信號的要求。

Ⅳ

GB/T45434.1—2025

中國標準時間第1部分：通則

1范圍

本文件規定了中國標準時間的產生、保持、比對、發布和授時服務要求。

本文件適用于中國標準時間的產生、管理與服務。

2規范性引用文件

下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中，注日期的引用文

件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有修改單）適用于本

文件。

GB/T39267北斗衛星導航術語

GB/T45434.3中國標準時間第3部分：公報

JJF1180時間頻率計量名詞術語及定義

3術語、定義和縮略語

3.1術語和定義

GB/T39267和JJF1180界定的以及下列術語和定義適用于本文件。

3.1.1

基準鐘primary/secondlyfrequencystandard

國際單位制秒或秒次級定義的復現裝置。

3.1.2

鐘組時標clockensembl

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