GB/T 39409-2020 English PDF

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GB/T 39409-2020: (Beidou grid location code)
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Basic data

Standard ID: GB/T 39409-2020 (GB/T39409-2020)
Description (Translated English): (Beidou grid location code)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V04
Word Count Estimation: 28,288
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 39409-2020: (Beidou grid location code)

---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.
(Beidou grid location code) ICS 49.020 V04 National Standards of People's Republic of China Beidou grid location code 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Preface Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 General 2 4.1 Coordinate frame 2 4.2 Classification 2 4.3 Coding Principle 2 5 Beidou two-dimensional grid location code 2 5.1 Meshing 2 5.2 Coding Rules 3 5.3 Two-dimensional grid location code of North and South Pole Beidou 8 6 Beidou 3D grid position code 10 6.1 Meshing 10 6.2 Encoding Rules 10 7 Beidou reference grid location code 12 7.1 Grid selection 12 7.2 Encoding Rules 12 7.3 Grid position reference method 12 8 Beidou short position code 14 8.1 Coding rules 14 8.2 Code restoration 14 9 Beidou grid position code representation 14 Appendix A (informative appendix) The conversion relationship between the Beidou grid location code and the topographic map of the country's basic scale 15 Appendix B (informative appendix) The process and example of the latitude and longitude coordinate conversion Beidou two-dimensional grid location code 16 Appendix C (informative appendix) Unequal distance division and coding method of height domain 21

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the Equipment Development Department of the Central Military Commission. This standard is under the jurisdiction of the National Beidou Satellite Navigation Standardization Technical Committee (SAC/TC544). This standard was drafted. Peking University, Beijing Xuanji Fuxi Big Data Technology Co., Ltd. The main drafters of this standard. Cheng Chengqi, Tong Xiaochong, Chen Bo, Huang Qiaohua, Zhou Xiang, Pu Guoliang.

Introduction

The rapid development of modern information technology is pushing human society into the era of big data. With Beidou and other global satellite navigation systems With the widespread popularity of (GNSS), location information plays an increasingly important role in various big data applications in economic construction, social development, and people’s daily lives. The more important the role. The Beidou grid location code is developed on the basis of the geospatial division theory and is suitable for various applications of Beidou satellite navigation system. A grid position code output by the terminal, which has the same root and the same origin as the related coding system based on the GeoSOT model. Compatible with the positioning accuracy of the Beidou satellite navigation system (including the augmentation system), while taking into account the use of people and equipment, it is the position of the longitude and latitude points. An important supplement to the code system. Take it as a basic input of the positioning and navigation timing (PNT) system represented by the Beidou satellite navigation system. The purpose of assigning values to the regional location of everything is to achieve global spatial location gridding and unification of one-dimensional integer numbers at the forefront of the information chain. One identification and expression, so as to provide better and more convenient basic spatial information services for various applications under big data conditions, and improve the The organization, processing, analysis, transmission and utilization efficiency of location data. This standard provides Beidou grid position codes covering different types of output specifications of Beidou satellite navigation systems, including Beidou two-dimensional grid positions Encoding, Beidou three-dimensional grid location code, Beidou reference grid location code, and Beidou short location code. Beidou grid location code

1 Scope

This standard specifies the grid selection and coding rules of the Beidou grid location code. This standard applies to the design and application of the terminal position output information of the Beidou satellite navigation system, as well as the identification, transmission and Big data processing.

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 13989-2012 National Basic Scale Topographic Map Framing and Numbering GB 22021-2008 National Basic Technical Regulations for Geodesy GB/T 39267-2020 Beidou satellite navigation terminology

3 Terms and definitions

The following terms and definitions defined in GB/T 39267-2020 apply to this document. 3.1 grid The space area enclosed by two or more sets of curves (surfaces). 3.2 Spatial division The process of dividing a space into a multi-level grid system with similar shapes, continuous scales, and seamless non-overlapping. 3.3 Grid cell The basic unit of a certain level contained in the grid system. 3.4 Trellis coding The grid unit is given a unique code identification according to certain rules. 3.5 High ground The distance from a point along the normal to the earth reference ellipsoid. Note. Upward or outward is positive, downward or inward is negative. 3.6 Beidou grid location code Based on the GeoSOT (GeoSOT), a grid code identification for the location of the geospatial region suitable for the output of the Beidou terminal. ......

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