標(biāo)準(zhǔn)解讀

《GB/T 45434.1-2025 中國(guó)標(biāo)準(zhǔn)時(shí)間 第1部分：通則》是關(guān)于中國(guó)標(biāo)準(zhǔn)時(shí)間（CST）的一系列國(guó)家標(biāo)準(zhǔn)中的首個(gè)部分，主要規(guī)定了與CST相關(guān)的術(shù)語(yǔ)定義、基本原則以及通用要求。該標(biāo)準(zhǔn)旨在為涉及時(shí)間服務(wù)的各類應(yīng)用提供統(tǒng)一的時(shí)間基準(zhǔn)和技術(shù)指導(dǎo)。

在術(shù)語(yǔ)和定義章節(jié)中，明確了“中國(guó)標(biāo)準(zhǔn)時(shí)間”是指基于國(guó)際原子時(shí)并經(jīng)閏秒調(diào)整后與世界協(xié)調(diào)時(shí)保持一致的時(shí)間系統(tǒng)；同時(shí)對(duì)其他相關(guān)概念如“時(shí)間頻率標(biāo)準(zhǔn)”、“時(shí)間同步”等進(jìn)行了界定，確保行業(yè)內(nèi)對(duì)于這些術(shù)語(yǔ)的理解一致性。

基本原則方面強(qiáng)調(diào)了CST應(yīng)具備高精度、高穩(wěn)定性和可靠性，以滿足不同領(lǐng)域?qū)r(shí)間信息的需求。此外還提出了時(shí)間服務(wù)需遵循安全性原則，在傳輸過(guò)程中保證數(shù)據(jù)不被篡改或泄露。

通用要求部分詳細(xì)列出了CST系統(tǒng)的組成結(jié)構(gòu)及其功能要求，包括但不限于時(shí)間源的選擇與配置、時(shí)間信號(hào)的生成與分發(fā)機(jī)制、用戶端接收設(shè)備的技術(shù)規(guī)格等。同時(shí)也涵蓋了測(cè)試驗(yàn)證方法及性能指標(biāo)評(píng)價(jià)體系等內(nèi)容，確保整個(gè)CST體系能夠高效準(zhǔn)確地運(yùn)行。


如需獲取更多詳盡信息，請(qǐng)直接參考下方經(jīng)官方授權(quán)發(fā)布的權(quán)威標(biāo)準(zhǔn)文檔。

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文檔簡(jiǎn)介

ICS33.060

CCSA50

中華人民共和國(guó)國(guó)家標(biāo)準(zhǔn)

GB/T45434.1—2025

中國(guó)標(biāo)準(zhǔn)時(shí)間第1部分：通則

Chinastandardtime—Part1：Generalprinciple

2025?03?28發(fā)布2025?03?28實(shí)施

國(guó)家市場(chǎng)監(jiān)督管理總局

國(guó)家標(biāo)準(zhǔn)化管理委員會(huì)發(fā)布

GB/T45434.1—2025

目次

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

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

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

2規(guī)范性引用文件········································································································1

3術(shù)語(yǔ)、定義和縮略語(yǔ)···································································································1

3.1術(shù)語(yǔ)和定義········································································································1

3.2縮略語(yǔ)··············································································································2

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

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

5.1產(chǎn)生流程···········································································································2

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

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

6中國(guó)標(biāo)準(zhǔn)時(shí)間物理時(shí)要求····························································································3

6.1系統(tǒng)要求···········································································································3

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

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

7比對(duì)鏈路要求···········································································································4

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

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

8信息發(fā)布要求···········································································································4

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

8.2授時(shí)信息···········································································································4

9授時(shí)服務(wù)要求···········································································································4

9.1天基授時(shí)···········································································································4

9.2地基授時(shí)···········································································································4

附錄A（資料性）CST計(jì)算方法······················································································6

A.1數(shù)據(jù)資源···········································································································6

A.2技術(shù)方法···········································································································6

Ⅰ

GB/T45434.1—2025

前言

本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第1部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

本文件是GB/T45434《中國(guó)標(biāo)準(zhǔn)時(shí)間》的第1部分。GB/T45434已經(jīng)發(fā)布了以下部分：

——第1部分：通則；

——第2部分：元數(shù)據(jù)；

——第3部分：公報(bào)。

請(qǐng)注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機(jī)構(gòu)不承擔(dān)識(shí)別專利的責(zé)任。

本文件由中央軍委裝備發(fā)展部提出。

本文件由全國(guó)北斗衛(wèi)星導(dǎo)航標(biāo)準(zhǔn)化技術(shù)委員會(huì)（SAC/TC544）歸口。

本文件起草單位：中國(guó)計(jì)量科學(xué)研究院、中國(guó)衛(wèi)星導(dǎo)航工程中心、北京衛(wèi)星導(dǎo)航中心、北京無(wú)線電

計(jì)量測(cè)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(xué)運(yùn)、劉瑩、徐清華、徐金鋒。

Ⅲ

GB/T45434.1—2025

引言

標(biāo)準(zhǔn)時(shí)間廣泛應(yīng)用于通信、交通、金融以及科學(xué)研究和國(guó)防建設(shè)等諸多方面，影響著人類生產(chǎn)生活

的方方面面，在現(xiàn)代社會(huì)中發(fā)揮著不可替代的作用。GB/T45434旨在明確中國(guó)標(biāo)準(zhǔn)時(shí)間產(chǎn)生、管理與

服務(wù)的準(zhǔn)則。擬由七個(gè)部分構(gòu)成：

——第1部分：通則。目的在于確立適用于中國(guó)標(biāo)準(zhǔn)時(shí)間的產(chǎn)生、保持、比對(duì)、發(fā)布和授時(shí)服務(wù)的

基本要求。

——第2部分：元數(shù)據(jù)。目的在于確立適用于中國(guó)標(biāo)準(zhǔn)時(shí)間產(chǎn)生與發(fā)布涉及數(shù)據(jù)資源的內(nèi)容和格

式，定義元數(shù)據(jù)實(shí)體及元數(shù)據(jù)屬性。

——第3部分：公報(bào)。目的在于確立適用于中國(guó)標(biāo)準(zhǔn)時(shí)間公報(bào)編制的方法和要求。

——第4部分：基準(zhǔn)鐘。目的在于確立適用于中國(guó)標(biāo)準(zhǔn)時(shí)間產(chǎn)生的基準(zhǔn)鐘的報(bào)數(shù)、使用和評(píng)估等

相關(guān)要求。

——第5部分：比對(duì)鏈路。目的在于確立適用于中國(guó)標(biāo)準(zhǔn)時(shí)間產(chǎn)生的北斗/全球衛(wèi)星導(dǎo)航系統(tǒng)

（GNSS）、衛(wèi)星雙向和光纖時(shí)間頻率比對(duì)鏈路的使用、管理與維護(hù)等相關(guān)要求。

——第6部分：發(fā)播。目的在于確立適用于技術(shù)機(jī)構(gòu)發(fā)播中國(guó)標(biāo)準(zhǔn)時(shí)間信號(hào)的要求。

——第7部分：監(jiān)測(cè)。目的在于確立適用于技術(shù)機(jī)構(gòu)監(jiān)測(cè)中國(guó)標(biāo)準(zhǔn)時(shí)間信號(hào)的要求。

Ⅳ

GB/T45434.1—2025

中國(guó)標(biāo)準(zhǔn)時(shí)間第1部分：通則

1范圍

本文件規(guī)定了中國(guó)標(biāo)準(zhǔn)時(shí)間的產(chǎn)生、保持、比對(duì)、發(fā)布和授時(shí)服務(wù)要求。

本文件適用于中國(guó)標(biāo)準(zhǔn)時(shí)間的產(chǎn)生、管理與服務(wù)。

2規(guī)范性引用文件

下列文件中的內(nèi)容通過(guò)文中的規(guī)范性引用而構(gòu)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(duì)應(yīng)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(wèi)星導(dǎo)航術(shù)語(yǔ)

GB/T45434.3中國(guó)標(biāo)準(zhǔn)時(shí)間第3部分：公報(bào)

JJF1180時(shí)間頻率計(jì)量名詞術(shù)語(yǔ)及定義

3術(shù)語(yǔ)、定義和縮略語(yǔ)

3.1術(shù)語(yǔ)和定義

GB/T39267和JJF1180界定的以及下列術(shù)語(yǔ)和定義適用于本文件。

3.1.1

基準(zhǔn)鐘primary/secondlyfrequencystandard

國(guó)際單位制秒或秒次級(jí)定義的復(fù)現(xiàn)裝置。

3.1.2

鐘組時(shí)標(biāo)clockensembl

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