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GB/T 39414.2-2020 English PDF

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US$999.00 · In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39414.2-2020: Interface specification for signal in space of BeiDou navigation satellite system - Part 2: Open service signal B2a
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39414.2-2020	999	Add to Cart	7 days	Interface specification for signal in space of BeiDou navigation satellite system - Part 2: Open service signal B2a	Valid

Similar standards

GB/T 38905 GB/T 38239 GB/T 36249 GB/T 39414.5 GB/T 39414.3 GB/T 39414.4

Basic data

Standard ID: GB/T 39414.2-2020 (GB/T39414.2-2020)
Description (Translated English): Interface specification for signal in space of BeiDou navigation satellite system - Part 2: Open service signal B2a
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V04
Classification of International Standard: 49.020
Word Count Estimation: 54,591
Date of Issue: 2020-11-19
Date of Implementation: 2021-06-01
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39414.2-2020: Interface specification for signal in space of BeiDou navigation satellite system - Part 2: Open service signal B2a

---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.
Interface specification for signal in space of BeiDou navigation satellite system-Part 2.Open service signal B2a ICS 49.020 V04 National Standards of People's Republic of China Beidou satellite navigation system space signal interface specification Part 2.Public Service Signal B2a 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Preface Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions, abbreviations 1 3.1 Terms and definitions 1 3.2 Abbreviations 1 4 Overview of Beidou system 2 4.1 Space Constellation 2 4.2 Coordinate System 2 4.3 Time System 3 5 Signal characteristics 3 5.1 Signal structure 3 5.2 Signal Modulation 3 5.3 Logic level 4 5.4 Polarization mode 5 5.5 Carrier phase noise 5 5.6 Spurious 5 5.7 Related losses 5 5.8 Data/code consistency 5 5.9 Signal consistency 5 5.10 Ground received power level 5 6 Ranging code characteristics 6 6.1 Ranging code structure 6 6.2 B2a signal ranging code 6 6.3 Non-standard codes 14 7 Navigation message structure 14 7.1 Overview of navigation messages 14 7.2 B-CNAV2 navigation message 15 8 Navigation message parameters and algorithms 21 8.1 Ranging code number 21 8.2 Information Type 21 8.3 System time parameters 22 8.4 Message data version number 22 8.5 Clock difference parameters 24 8.6 Group delay correction parameter 24 8.7 Ephemeris parameters 25 8.8 Ionospheric delay correction model parameters 27 8.9 Medium precision almanac 32 8.10 Simple Almanac 35 8.11 Earth orientation parameters 35 8.12 BDT-UTC time synchronization parameters 36 8.13 BGTO parameters 38 8.14 Satellite health status 38 8.15 Satellite integrity status indicator 39 8.16 Spatial signal accuracy index 39 8.17 Spatial signal monitoring accuracy index 40 9 Compliance verification method 40 9.1 Overview 40 9.2 Signal characteristics verification method 40 9.3 Method for verifying the characteristics of the ranging code 40 9.4 Verification method of navigation message structure 40 9.5 Verification method of navigation message parameter algorithm 41 Appendix A (informative appendix) Multi-ary LDPC encoding and decoding methods and examples 42

Foreword

GB/T 39414 "Beidou Satellite Navigation System Space Signal Interface Specification" is divided into 4 parts. ---Part 1.Public service signal B1C; ---Part 2.Public service signal B2a; ---Part 3.Public service signal B1I; ---Part 4.Public service signal B3I. This part is Part 2 of GB/T 39414. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part was proposed by the Equipment Development Department of the Central Military Commission. This part is under the jurisdiction of the National Beidou Satellite Navigation Standardization Technical Committee (SAC/TC544). Drafting organizations of this section. China Satellite Navigation Engineering Center, China Aerospace Standardization Institute, Beijing Satellite Navigation Center, China Aerospace Science Technology Group Corporation Fifth Research Institute, Chinese Academy of Sciences Microsatellite Innovation Research Institute, Huazhong University of Science and Technology, Beihang University, Tsinghua University Science, China Academy of Aerospace Electronics Technology. The main drafters of this section. Su Chengeng, Gao Weiguang, Lu Yun, Ruan Hang, Wang Weijia, Quan Haofang, Gao Yang, Wang Wei, Wang Mengli, Tang Zuping, Huang Qin, Yao Zheng, Ma Zhichao, Dong Haiqing, Lu Xinxing.

Introduction

The Beidou satellite navigation system is divided into three stages of construction and development. Beidou-1, Beidou-2 and Beidou-3.Beidou Satellite Navigation System The previously released public service signals include B1I, B2I, B3I, B1C and B2a. Among them, the B1I and B3I signals are on Beidou 2 and Beidou 3 Broadcast on medium-circular earth orbit (MEO) satellites, tilted geosynchronous orbit (IGSO) satellites and geostationary orbit (GEO) satellites, providing Open services; B2I signals are broadcast on all Beidou-2 satellites to provide public services and will be replaced by B2a signals on Beidou-3 satellites; B1C and B2a signals are broadcast on Beidou-3 Medium Earth Orbit (MEO) satellites and Tilted Geosynchronous Orbit (IGSO) satellites to provide public services. This part of GB/T 39414 mainly defines the relevant internal information of the public service signal B2a between the Beidou system space constellation and the user terminal. Content, including space signal radio frequency characteristics, ranging code, navigation message structure, navigation message parameters and user algorithm, etc., can be used as Beidou satellite navigation An important basis for product design, development and application. Beidou satellite navigation system space signal interface specification Part 2.Public Service Signal B2a

1 Scope

This part of GB/T 39414 specifies the communication between the Beidou satellite navigation system (hereinafter referred to as the Beidou system) space constellation and the user terminal. Open service signal B2a's signal characteristics, navigation message structure and user algorithm, etc. This section applies to the development, production and inspection of satellite navigation products using B2a signals.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 39267 Beidou satellite navigation terminology 3 Terms and definitions, abbreviations 3.1 Terms and definitions The terms and definitions defined in GB/T 39267 apply to this document. 3.2 Abbreviations The following abbreviations apply to this document. AIF. System Alarm Identification BDCS. Beidou Coordinate System BDGIM. Beidou Global Ionospheric Delay Correction Model BDS. Beidou Satellite Navigation System ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39414.2-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39414.2-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 39414.2-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39414.2-2020_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.