GB/T 42832.1-2023Interface specification for signal in space of BeiDou Satellite-based Augmentation System—Part 1: Single frequency service signal BDSBAS-B1C (English PDF)
北斗星基增强系统空间信号接口规范 第1部分：单频增强服务信号BDSBAS-B1C
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 6, 2023
Implementation date
March 1, 2024
Scope
GB/T 42832.1-2023 is the English-translated version of 北斗星基增强系统空间信号接口规范 第1部分：单频增强服务信号BDSBAS-B1C.
This document specifies the interface of the single frequency service signal BDSBAS-B1C of the BeiDou Satellite-based Augmentation System: the radio frequency characteristics of the signal and the structure of its message.
The document applies to receiver development, to the testing of indicators, to the evaluation of service performance and to the other related work carried out with the BDSBAS-B1C signal.
It is the first part of the standard on the interface of the signal in space of the BeiDou Satellite-based Augmentation System.
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Document preview — GB/T 42832.1-2023
National Standard of the People's Republic of China
- ICS
- 33.070.40
- Classification
- V 70
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative reference documents
- 3 Terms, definitions and abbreviations
- 3.1 Terms and definitions
- 3.2 Abbreviations
- 4 Constellations and space-time benchmarks
- 4.1 Space Constellation
- 4.2 Coordinate system
- 4.3 Time system
- 5 Signal RF Characteristics
- 5.1 Carrier frequency
- 5.2 Signal spurious
- 5.3 Modulation method
- 5.4 Carrier phase noise
- 5.5 Signal Spectrum
- 5.6 Doppler shift
- 5.7 Carrier frequency stability
- 5.8 Polarization mode
- 5.9 Code/carrier frequency consistency
- 5.10 Signal landing power
- 5.11 Modulation loss
- 5.12 Maximum code phase deviation
- 5.13 Signal encoding
- 6 Enhanced message
- 6.1 Message description
- 6.2 Message arrangement
- 6.3 Message validity period
- Appendix A (informative) BDSBAS-B1C encoder implementation
- Appendix B (Normative) Message Definition
- Appendix C (normative) How to use messages
- Reference
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
This document is Part 1 of GB/T 42832 "Beidou Satellite-based Augmentation System Space Signal Interface Specification". GB/T 42832 has been issued The following parts have been published.
---Part 1: Single-frequency enhanced service signal BDSBAS-B1C.
Introduction
The Beidou Satellite-Based Augmentation System (BDSBAS) is an important part of the Beidou system, through BDSBAS-B1C and BDSBAS- B2a enhances the signal and provides users in China and surrounding areas with single-frequency enhanced services and dual-frequency services that comply with the requirements of the International Civil Aviation Organization (ICAO) standards. Multi-constellation enhanced services.
This document defines the relevant content of the Beidou Satellite-based Augmentation System single-frequency augmentation service signal BDSBAS-B1C. It is a reference for Chinese satellite navigation Technical document "Beidou Satellite Navigation System Space Signal Interface Control Document Satellite-based Enhanced Service Signal" issued by the System Management Office Standard conversion carried out by BDSBAS-B1C (version 1.0).
The Beidou satellite-based augmentation system space signal interface specification is planned to consist of two parts.
---Part 1: Single frequency enhanced service signal BDSBAS-B1C;
---Part 2: Dual-band enhanced service signal BDSBAS-B2a.
1 Scope
This document specifies the signal radio frequency characteristics, electrical Text structure, etc.
This document is applicable to receiver development, indicator testing, service performance evaluation and other related work using BDSBAS-B1C signals.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the latest version (including all amendments) applies to this document. document.
GB/T 39267-2020 Beidou Satellite Navigation Terminology
3 Terms, definitions and abbreviations
3.1 Terms and definitions
The terms and definitions defined in GB/T 39267-2020 and the following apply to this document.
3.1.1 GEO satellite
Navigation satellites operating in geostationary orbit (GEO).
Note: GEO is a prograde orbit in which the inclination and eccentricity of the satellite orbit are zero, and the operating period is the same as the earth's rotation period (about 24 hours). [Source: GB/T 39267-2020,3.2.4]
3.1.2 GPS time GPStime; GPST
The time base established and maintained by GPS uses SI seconds for continuous time without leap seconds. The starting epoch of GPST is UTC At 00.00.00 on January 6, 1980, traced to UTC (USNO).
Note: GPST uses week counts and seconds within the week. [Source: GB/T 39267-2020,2.2.17]
3.1.3 WGS-84 Geodetic Coordinate
The geodetic coordinate system used by GPS. The origin of its coordinate system is located at the center of mass of the earth, and the Z-axis points to the (International Time Bureau) BIH1984.0
The defined direction of the Protocol Earth Pole (CTP), the X-axis points to the intersection of the zero-degree meridian of BIH1984.0 and the CTP equator, and the Y-axis satisfies the right-hand law. [Source: GB/T 39267-2020,2.2.7]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 40 pages — is available in the English PDF.
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Related Standards
GB/T 39267-2020 — Terminology for BeiDou navigation satellite system (BDS)
GB/T 42832.2-2026 — Interface specification for the signal in space of the BeiDou Satellite-Based Augmentation System - Part 2: Dual-frequency augmentation service signal BDSBAS-B2a
GB/T 7251.4-2026 — Low-voltage switchgear and controlgear assemblies - Part 4: Particular requirements for assemblies for construction sites (ACS)
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