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Method for implementing national road section survey by using ultra-large scale GPS data

A technology of WGS84 and coordinate plane, which is applied in the fields of electrical digital data processing, special data processing applications, digital data information retrieval, etc., and can solve problems such as huge calculation scale

Inactive Publication Date: 2019-07-16
周明儒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The calculation scale of the present invention is huge, and conventional commercial data processing tool software, such as ORACLE, ARCGIS, etc., is completely powerless for the global processing of trillion-level data. The computer implementation of the present invention needs to develop a super-large-scale efficient calculation program from the bottom layer. At present, the present invention The calculation can only be realized on the "Xiaguang No. 1" special supercomputer specially developed by the inventor

Method used

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Embodiment Construction

[0031] The first step: data conversion, since the original data exists in clear format, which is not conducive to fast processing, it is necessary to convert the clear format data into special format data suitable for supercomputer high-speed calculation. Completed by the inventor's copyrighted software.

[0032] The second step: Coordinate distortion and bad track removal. Some vehicle-mounted GPS devices have various problems, which eventually lead to systematic deviations in vehicle trajectories, which need to be removed uniformly. Completed by the inventor's copyrighted software.

[0033] The third step: divide the data into blocks, divide all the cleaned original data into spatial areas, and use BLACK as the unit to frame each BLACK for a physical file of a computer operating system. Rules, assigned a unique number. Completed by the inventor's copyrighted software.

[0034] Take the digital product of the 8-level road speed thematic map generated by a certain BLACK as...

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Abstract

The invention belongs to the GPS space big data mining technology. The method comprises the following steps of: 1, carrying out strict serialization grid division on the WGS84 coordinate plane; 2, under the grid of the specified level, generating a road digital image in the target area by using all GPS recording data; step 3, regarding the horizontal / vertical adjacent road grid set as a road sectionand as a random sampling general under statistical significance; 4, counting the driving speed of the GPS record data falling on the section according to the section of the road, namely counting andobtaining the speed distribution rule of the section, and 5, replacing the driving speed indication with an index provided by other GPS record data, namely obtaining the counting rule of the corresponding index of the section.

Description

technical field [0001] The invention belongs to the technical field of ultra-large-scale GPS space big data mining, and is related to remote sensing technology, sampling survey technology, geographic information system technology, digital image technology and supercomputing technology. [0002] The digital road results produced by the present invention are the basic data support for the large-scale application of the global satellite positioning system, and are closely related to many fields such as vehicle insurance, unmanned vehicles, map surveying and mapping, national marine strategy, and national defense security. [0003] The GPS referred to in the present invention refers to all global satellite positioning systems including the Beidou navigation system of the People's Republic of China, and does not specifically refer to the GPS system of the United States. Background technique [0004] With the large-scale popularization and application of GPS mobile terminals, supe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/248G06F16/2458
CPCG06F16/2458G06F16/248
Inventor 周科松
Owner 周明儒
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