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GB/T 45446-2025 English PDF

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US$759.00 · In stock
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GB/T 45446-2025: Interface specification for signal in space of BeiDou navigation satellite system precise point positioning service
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45446-2025	759	Add to Cart	6 days	Interface specification for signal in space of BeiDou navigation satellite system precise point positioning service	Valid

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Basic data

Standard ID: GB/T 45446-2025 (GB/T45446-2025)
Description (Translated English): Interface specification for signal in space of BeiDou navigation satellite system precise point positioning service
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V04
Classification of International Standard: 49.020
Word Count Estimation: 38,397
Date of Issue: 2025-03-28
Date of Implementation: 2025-03-28
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45446-2025: Interface specification for signal in space of BeiDou navigation satellite system precise point positioning service

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
GB/T 45446-2025 English version. Interface specification for signal in space of BeiDou navigation satellite system precise point positioning service ICS 49.020 CCSV04 National Standard of the People's Republic of China Beidou satellite navigation system precise point positioning service space Signal interface specifications Released on 2025-03-28 2025-03-28 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Abbreviations 1 5 Overview of BeiDou Satellite Navigation System 2 5.1 Space Constellation 2 5.2 Coordinate system 2 5.3 Time system 3 6 Signal characteristics 3 6.1 Signal Structure 3 6.2 Signal Modulation 3 6.3 Logic Level 4 6.4 Polarization 4 6.5 Carrier Phase Noise 4 6.6 Spurious 4 6.7 Correlation loss 4 6.8 Data/Code Consistency 4 6.9 Signal Consistency 4 6.10 Ground receiving power level 4 7 Ranging Code Characteristics 5 8 Navigation message 6 8.1 Information Format 6 8.2 Information Content 9 8.3 Information validity period 23 8.4 PPP-B2b Information Enhancement Object 23 8.5 Time-Space Coordinate System 23 8.6 Satellite code bias correction 23 8.7 Satellite Orbit Correction 24 8.8 Satellite clock correction 24 8.9 User distance measurement accuracy 24 8.10 System time calculation 24 Appendix A (Informative) Multi-binary LDPC encoding and decoding method and examples 25 A.1 Multi-level LDPC coding 25 A.2 Multi-ary LDPC decoding 26

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Equipment Development Department of the Central Military Commission. This document is under the jurisdiction of the National Beidou Satellite Navigation Standardization Technical Committee (SAC/TC544). This document was drafted by. China Satellite Navigation Engineering Center, China Satellite Navigation System Management Office, Beijing Satellite Navigation Center, China Institute of Aerospace Standardization, Wuhan University, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Huazhong University of Science and Technology, and Beijing Institute of Telemetry Technology. The main drafters of this document are. Gao Weiguang, Su Chengeng, Chen Liang, Guo Shuren, Wang Chenglong, Lu Yun, Li Xing, Gao Yang, Lou Yidong, Song Weiwei, Tang Chengpan, Tang Zuping, Gao Lifeng, Zheng Fu, Wang Weijia, Chen Ying, Li Gang, Zhou Wei, Yang Xiaoheng, Chen Zhengkun, Su Mudan, Zhu Zhiyong, Sun Weibin.

Introduction

The BeiDou satellite navigation system is divided into three stages of construction and development. BeiDou-1, BeiDou-2 and BeiDou-3.The BeiDou-3 system provides multiple The company provides a variety of services, including. providing global positioning, navigation and timing (RNSS), global short message communication (GSMC) and international search and rescue (SAR) Services. Provide precise point positioning (PPP), satellite-based augmentation (SBAS), ground-based augmentation (GAS) and regional short message in China and surrounding areas Communication (RSMC) service. Among them, the BeiDou-3 system PPP service is provided through the PPP-B2b of the BeiDou-3 geostationary orbit (GEO) satellite. Signal provision, PPP-B2b signal is used as a data broadcast channel to broadcast the BeiDou-3 system and other global satellite navigation systems (GNSS) precision Satellite orbit and clock correction parameters are used to provide PPP services to users in China and surrounding areas. This document is a technical document issued by the China Satellite Navigation System Management Office, "Beidou Satellite Navigation System Space Signal Interface Control Document" It is compiled based on the Precision Point Positioning Service Signal PPP-B2b (Version 1.0) of the BeiDou-3 system, which mainly defines the PPP service space of the BeiDou-3 system. Signal PPP-B2b related content, including space signal characteristics, ranging code characteristics, navigation message structure, navigation message parameters and user algorithm The formulation and implementation of this document will provide reference and guidance for the development, production and inspection of satellite navigation products using PPP-B2b signals. Guiding effect. Beidou satellite navigation system precise point positioning service space Signal interface specifications

1 Scope

This document specifies the signal characteristics, ranging code characteristics, Navigation message structure and user algorithm. This document applies to the development, production and inspection of satellite navigation products using PPP-B2b signals.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 39267 Beidou Satellite Navigation Terminology

3 Terms and definitions

The terms and definitions defined in GB/T 39267 apply to this document.

4 Abbreviations

The following abbreviations apply to this document. BDCS. BeiDou Coordinate System BDS. BeiDou Navigation Satellite System BDT. Beidou Time (BDSTime) BPSK. Binary Phase Shift Keying CGCS2000.2000 China Geodetic Coordinate System (ChinaGeodeticCoordinateSystem2000) CRC. Cyclic Redundancy Check DCB. Differential Code Biases GALILEO.Galileo satellite navigation system GEO. Geostationary Earth Orbit GF. Galois Field GLONASS. Global Navigation Satellite System GNSS. Global Navigation Satellite System GPS. Global Positioning System IERS. International Earth Rotation and Reference Systems Service IGSO. Inclined GeoSynchronous Orbit IOD. Issue of Data IODC. Issue of Data Clock ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45446-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45446-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45446-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45446-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.