Method and device for transforming spatial geographic coordinates

Abstract

The invention provides a method and device for transferring space geographical coordinates. The method comprises the steps of obtaining sample data, wherein the sample data comprises coordinate data of multiple sampling sites in a map, the coordinate data of every sampling point comprises a first coordinate under a first coordinate system and a second coordinate under a second coordinate system; utilizing a machine study method to train a coordinate transferring model according to the sample data, and obtaining the coordinate transferring model after the training; adopting the coordinate transferring model obtained after the training to conduct coordinate system transferring on the coordinate of which the site is to be transferred. According to the method and device for transferring the space geographical coordinates, by collecting the sample data under different coordinate systems and utilizing the machine study method to train the coordinate transferring model, the coordinate transferring model with high precision can be obtained, then the coordinate transferring model obtained after the training can be utilized to achieve mutual transferring among different coordinate systems, thus convenience is brought to a user to adopt more coordinate systems to read and analyze the map, and technical support is provided for the making of the overlapped map under the multiple coordinate systems.

Description

technical field [0001] The invention relates to the technical field of electronic maps, in particular to a method and device for converting spatial geographic coordinates. Background technique [0002] At present, GPS positioning technology has been widely used, and the GPS coordinate system has become an open general coordinate system, such as Baidu map, Gaode map, etc., all use GPS coordinates. [0003] However, most maps still use the urban coordinate system at present. The urban coordinate system is because the accuracy of the national control network can only meet the requirements of medium and small scale survey maps. Design, construction and management, topographic map surveying, urban cadastre surveying, etc. need to build a high-precision urban coordinate system. For example, at present, most of the government intranets are local maps using the city coordinate system. [0004] At present, due to the different scales and precisions used in local maps, the urban coo...

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Problems solved by technology

[0004] At present, due to the different scales and precisions used in local maps, the urban coordinate system used is also different from the GPS coordinate system. There is no clear and direct conversion relationship between the GPS coordinate system and the urban coordinate system. Therefore, when using local maps It is difficult to read in conjunction with GPS coordinates, and it is also difficult to read in conjunction with the city coordinate system when using a general-purpose GPS map; and with the development of the information society, the demand for combining the city coordinate system with the GPS coordinate system is becoming stronger and stronger, such as Make an overlay map with the above two coordinate systems so that users can read, mark, etc. according to different needs. Therefore, there is an urgent need for a method that can convert the city coordinate system and the GPS coordinate system

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