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GB/T 46932-2025Technical specification for the civil aviation BeiDou timing system (English PDF)

民航北斗授时系统技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2025

Implementation date

July 1, 2026

Scope

GB/T 46932-2025 is the English-translated version of 民航北斗授时系统技术规范.

GB/T 46932-2025 is the Chinese standard "Technical specification for the civil aviation BeiDou timing system". Its scope clause reads: This document specifies the technical requirements for the BeiDou timing system in civil aviation and describes the corresponding test methods.

This document applies to the design, development, production, deployment, and inspection of the BeiDou timing system for civil aviation ground facilities and equipment. use. Its clauses include terms and definitions.

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Document preview — GB/T 46932-2025

National Standard of the People's Republic of China

ICS: 33.200
Classification: M 50

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1.Scope
2 Normative References
3.Terms and Definitions
4.Abbreviations
5.Technical Requirements
5.1 General Requirements
5.2 System Structure
5.3 Time synchronization equipment
5.4 Monitoring Equipment
5.5 Transmission Medium
6.Test Methods 9.
6.1 Test Requirements
6.2 Test Items and Methods
Appendix A (Normative) Classification and Evaluation System for Time-Consuming Equipment in Civil Aviation
Appendix B (Normative) Test Methods for Civil Aviation BeiDou Timing System
References

1 Scope

This document specifies the technical requirements for the BeiDou timing system in civil aviation and describes the corresponding test methods.

This document applies to the design, development, production, deployment, and inspection of the BeiDou timing system for civil aviation ground facilities and equipment.

use.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 2423.1 Environmental testing of electrical and electronic products – Part 2.Test methods – Test A. Low temperature

GB/T 2423.2 Environmental testing of electrical and electronic products – Part 2.Test methods – Test B. High temperature

GB/T 2423.3 Environmental testing – Part 2.Test methods – Test Cab. Constant damp heat test

GB/T 2423.21 Environmental testing – Part 2.Test methods – Test M. Low pressure

GB/T 2423.37 Environmental testing of electrical and electronic products - Part 2.Test methods - Test L. Dust test

GB/T 2423.38 Environmental testing – Part 2.Test methods – Test R. Water – Test methods and guidelines

GB/T 4208 Degrees of protection provided by enclosures (IP code)

GB/T 5080.7 Verification Test Scheme for Failure Rate and Mean Time Between Failures under the Constant Failure Rate Assumption in Equipment Reliability Testing

GB/T 26866 Test Specification for Power Time Synchronization Systems

GB/T 37937 Technical Requirements for BeiDou Satellite Timing Terminals

GB/T 37943 Test Methods for BeiDou Satellite Timing Terminals

YD/T 2868 Measurement Method for Passive Antennas in Mobile Communication Systems

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1

A system that uses the timing function of the BeiDou satellite navigation system to provide accurate and reliable time signals for civil aviation users.

3.2 Time reference

The confirmed precise timescale.

3.3

A time reference signal transmitted wirelessly.

3.4

A time reference signal transmitted via wired communication.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 25 pages — is available in the English PDF.

Referenced standards

Normative references

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