A method for automatically converting CAD data into dem data in civil aviation airports
A technology of automatic conversion and conversion method, applied in the direction of geometric CAD, special data processing applications, etc., can solve the problems of data conversion without registration steps, large errors, and lack of independence, so as to shorten the processing time, improve efficiency and Precision, design scientific and reasonable effect
Active Publication Date: 2021-02-02
THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is: the system and method for automatically converting the CAD data of civil aviation airports into DEM data, the existing technology needs to rely on the arcGIS platform, which does not have independence, and because the elevation data in the CAD data is not in the attribute value , so the process of extracting the grid position and elevation is very cumbersome, and there is no registration step in the data conversion, which leads to the CAD position not being well integrated with the geographic information data, and the error is large in the data processing process, which eventually leads to the generated The problem that DEM data cannot restore CAD design terrain very well
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[0063] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.
[0064] Such as Figure 4 and 5 As shown, the automatic conversion system for converting civil aviation airport CAD data into DEM data provided by the present invention has simple structure, scientific and reasonable design, convenient operation, and can operate independently without relying on any platforms and tools. Compared with traditional manual operation methods, The processing time is greatly shortened, and the efficiency and precision of data processing are improved. The automatic transfer system shown includes:
[0065] The input device 1 is used to input the airport design terrain CAD file, the WGS84 coordinates of the center point of the airport runway, and the magnetic heading, length and width of the airport runway;
[0066] A data processor 2, the...
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The invention discloses a method for automatically converting CAD data of civil aviation airports into DEM data, which solves the problems that the existing technology needs to rely on an arcGIS platform, the operation is very cumbersome, and the precision of the generated DEM data is not high. Automatic conversion system, including input device, data processor and output display; automatic conversion method, including the following steps, step 1: airport CAD terrain design data extraction; step 2: airport CAD terrain design data registration; step 3: construct DEM grid grid data, and clip the constructed DEM grid data into airport DEM geographic information data. The automatic conversion system of the present invention has simple structure, scientific and reasonable design, convenient operation, and can operate independently without relying on any platform and tools. Compared with the traditional manual operation method, the processing time is greatly shortened, and the efficiency and accuracy of data processing are improved. .
Description
technical field [0001] The invention relates to a system and a method for automatically converting CAD data of civil aviation airports into DEM data. Background technique [0002] my country's civil aviation is in a stage of rapid development. As of the end of July 2017, the number of civil aviation transport airports in my country has reached 225, and the number of general airports has reached 310. A large number of newly-built airports need to build a large number of communication and navigation equipment to ensure the safe operation of the airport, and the signal coverage and signal quality analysis of the newly-built communication and navigation equipment needs to be based on the design terrain of the airport for simulation analysis, and because the airport has not yet been built, National Geographic There is no geographical data after the airport construction is completed in the database. Therefore, it is necessary to update the geographical information data within the ...
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IPC IPC(8): G06F30/13
CPCG06F30/13
Inventor 林欢叶家全梁飞李清栋袁斌
Owner THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA