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GB/T 40087-2021 English PDF

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GB/T 40087-2021: Geospatial grid encoding rule
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PDF similar to GB/T 40087-2021


Standard similar to GB/T 40087-2021

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Basic data

Standard ID GB/T 40087-2021 (GB/T40087-2021)
Description (Translated English) Geospatial grid encoding rule
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A75
Word Count Estimation 26,279
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 40087-2021: Geospatial grid encoding rule

---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.
Geospatial grid encoding rule ICS 07.040 A75 National Standards of People's Republic of China Geospatial grid coding rules Released on 2021-04-30 Implementation on 2021-04-30 State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅰ Introduction Ⅱ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 General 2 4.1 Basic requirements 2 4.2 Coordinate System 2 5 Geospatial grid division 2 5.1 Dividing method 2 5.2 Mesh range 2 5.3 Starting point of mesh 3 5.4 Division 3 5.5 Earth reference ellipsoidal grid 3 5.6 Height domain subdivision 8 5.7 Grid positioning and attribution of boundary surface 9 6 Geospatial grid coding 9 6.1 Code composition 9 6.2 Ellipsoidal coding 9 6.3 Height field coding 12 Appendix A (informative appendix) Specifications and number of earth reference ellipsoidal grids 14 Appendix B (informative appendix) Range and method of unequal-distance division of the height direction 15 Appendix C (Normative Appendix) Grid Positioning and Boundary Surface Attribution 18 Appendix D (informative appendix) Example of conversion from latitude and longitude coordinates of the earth reference ellipsoid to grid code 20 References 22

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the Ministry of Natural Resources of the People's Republic of China. This standard is under the jurisdiction of the National Geographic Information Standardization Technical Committee (SAC/TC230). Drafting organizations of this standard. Institute of Surveying and Mapping Standardization, Ministry of Natural Resources, Peking University, National Basic Geographic Information Center, Strategic Support Force Information Engineering University, Wuhan University, Construction Comprehensive Survey Research and Design Institute Co., Ltd., Interstellar (Tianjin) Space Technology Development Co., Ltd., Zhejiang Provincial Academy of Surveying and Mapping Science and Technology, Ningbo Academy of Surveying, Mapping and Remote Sensing Technology (Ningbo Natural Resources and Planning Survey and Monitoring Center), Guangzhou Urban Planning Survey and Design Institute, Beijing University of Architecture, Beijing Xuanji Fuxi Technology Co., Ltd. The main drafters of this standard. Cheng Chengqi, Zhang Kun, Deng Guoqing, Wu Wei, Tong Xiaochong, Liu Ruomei, Chen Bo, Pu Guoliang, Liu Xiaoqiang, Zhang Jing, Zhao Xin, Li Lin, Ying Shen, Chen Shaoqin, Wang Shudong, Jiang Yifang, Li Dannong, Zhang Pengcheng, Li Lin, Guo Shide, Guo Xian, Xie Xiuping, Wang Xiaohua.

Introduction

With the development of information technology, geographic information is playing an increasingly important role in social services and applications. To satisfy big data The unified organization, fusion sharing, efficient retrieval and application of modern information realizes the unified identification of global multi-scale spatial locations, and makes the global geographic space Information is effectively operated, operated and analyzed under a unified framework, and there is an urgent need to establish a unified reference frame for geospatial data organization. The geospatial grid is based on GeoSOT (GeographicalcoordinateglobalSubdivisionbasedonOne-dimension- integerandTwotonthpower) Earth division model, which uniformly divides the earth space into grid units of different scales, and is compiled according to the unified Code rules are used for identification and expression, and a grid-based geospatial data organization reference frame is constructed. The framework supports the earth’s surface space and ground The aggregation of spherical three-dimensional space and geospatial information can effectively solve the identification and expression of massive spatial information in the Internet of Things, big data, and cloud computing. The uniqueness, readability, scale, and relevance of the bottleneck on the Internet have realized the efficient organization, processing and application of multi-source and multi-scale data grids. It breaks the technical barriers of cross-industry application of geospatial information and promotes the development of earth system science. Geospatial grid coding rules

1 Scope

This standard specifies the requirements and coding methods for geospatial grid division. This standard applies to geospatial grid division and code identification as a spatial unit and spatial information organization.

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 article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 16831 Standard Representation of Geographic Point Location Based on Coordinates GB 22021 National Basic Technical Regulations for Geodesy

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Geospatial A collection of space points covering land, sea, space, and underground human activities. Note. From the height of the earth, it is about -6302.106722602182km to 528680.1711252437km. 3.2 Geospatial subdivision The process of dividing the earth space into a collection of multi-level spatial units with similar shapes, continuous scales, and seamless overlaps. 3.3 Geospatialgrid The discretized spatial area unit formed by the division of the earth space. 3.4 Geospatial grid code geospatialgridencode According to certain rules, code identification is assigned to the earth space grid. 3.5 Basicgrid The initial division range is a 1°-level spatial area unit formed by recursive division. 3.6 Positionpoint The location point in the geospatial grid that plays a role in positioning. 3.7 Geodeticheight The distance from a point along the normal line of the ellipsoid to the surface of the ellipsoid. [GB/T 17159-2009, definition 4.30]

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