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Comprehensive geographical spatial data coordinate conversion method and system

A geospatial data and coordinate conversion technology, applied in the field of surveying and mapping, can solve the problems of complex conversion process, slow coordinate conversion method and system conversion efficiency, etc., and achieve the effect of powerful conversion function, high coordinate conversion efficiency and high conversion efficiency.

Inactive Publication Date: 2015-12-16
湖北省基础地理信息中心
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a comprehensive geospatial data coordinate conversion method and system, which solves the technical problems of slow conversion efficiency and complicated conversion process of the coordinate conversion method and system in the prior art

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  • Comprehensive geographical spatial data coordinate conversion method and system
  • Comprehensive geographical spatial data coordinate conversion method and system

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[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0035] Such as figure 1 As shown, it is a schematic flow chart of a comprehensive geospatial data coordinate transformation method of the present invention, comprising the following steps:

[0036] Step 1. Set the source coordinate format and target coordinate format;

[0037] Step 2. Set the source coordinate system and the target coordinate system;

[0038] Step 3, select the conversion mode and conversion model of coordinate conversion, and set the conversion parameters of coordinate conversion according to the conversion mode;

[0039] Step 4. Input the coordinate data of the known control points in the source coordinate system and the coordinate data of the target coordinate system; and input the coordinate d...

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Abstract

The invention relates to comprehensive geographical spatial data coordinate conversion method and system. The method comprises the following steps: setting a source coordinate format and a target coordinate format; setting a source coordinate system and a target coordinate system; selecting a conversion mode and a conversion model of coordinate conversion, and setting a conversion parameter of the coordinate conversion; inputting coordinate data of a known control point in the source coordinate system and the target coordinate system; calculating coordinate conversion parameters according to the coordinate data of the known control point; and converting the coordinate data of a to-be-converted point in the source coordinate system into the coordinate data of the target coordinate system according to the coordinate conversion parameters. The comprehensive geographical spatial data coordinate conversion method and system can be used for achieving space coordinate conversion between geographical spatial data with different formats and different coordinate forms, proportional scales and coordinate systems, achieving conversion and calculations such as projection and band change of geographical spatial data achievements between different coordinate systems, and achieving conversion parameter calculation and accuracy assessment; meanwhile, the input process of the coordinate data of the control point is simple; and the coordinate conversion efficiency is high.

Description

technical field [0001] The invention relates to the field of surveying and mapping, in particular to a comprehensive geographic space data coordinate conversion method and system. Background technique [0002] Beijing 54, Xi'an 80, WGS84 and 2000 national geodetic coordinate systems are the four commonly used coordinate systems in the field of surveying and mapping. Convert to a unified spatial data standard, so as to establish a unified GIS spatial database and provide basic geospatial information base map services for various intelligent applications for smart cities. There are many methods of coordinate conversion, and the calculation is very complicated. Usually, software needs to be used to convert one by one, and the coordinates of the control points need to be input one by one during the conversion process. Not only the conversion speed is slow, but also for the difference between different coordinate types. Conversion requires multi-step complex conversion, which gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 邱儒琼李强洪亮聂小波王慧妮沈凤娇徐锋王雪艳闵梦然
Owner 湖北省基础地理信息中心
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