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Method for producing nationwide road digital images by using ultra-large scale GPS data

A digital product, WGS84 technology, applied in the field of large-scale GPS space big data mining, can solve problems such as huge calculation scale, achieve the effect of correct location, save purchase cost, and save field survey cost

Inactive Publication Date: 2019-07-16
周明儒
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  • Abstract
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  • Claims
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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

[0021] Taking the national network joint control platform, about 2.5 million vehicles connected to the network, and about 600 billion GPS pieces received between 2014 and 2016 as an example, the first data content includes: license plate number, longitude, latitude, time, speed, and orientation Angle, vehicle status word, alarm information. The specific implementation steps are as follows.

[0022] 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.

[0023] 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.

[0024] The third step: data block, take the geographic space area corresponding to a 16-level product...

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Abstract

The invention belongs to the GPS space big data mining technology. A GPS satellite and a vehicle-mounted mobile terminal are designed into a 24-hour uninterrupted optical imaging system special for aroad, and each vehicle-mounted GPS is converted into a movable storm light source. The method comprises the following steps: firstly, carrying out strict serialization grid division on a WGS84 coordinate plane; under any grid division level, dividing all grids into road grids and non-road grids, regarding grids reflected by vehicle-mounted GPS records as road grids, and under the support of ultra-large-scale GPS data, producing high-precision road digital images which are superior to 1: 5000 proportional scales and cover national road networks.

Description

technical field [0001] The invention belongs to the technical field of ultra-large-scale GPS space big data mining, and is related to geographic information system technology, digital image technology and supercomputing technology. [0002] The continuous production of national public network digital images in the present invention is the basic data support for the large-scale application of GPS, and is closely related to many fields such as vehicle insurance, unmanned vehicles, map surveying and mapping, 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, super-large-scale GPS data has been rapidly accumulated in the whole society. As of mid-...

Claims

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Application Information

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IPC IPC(8): G06F16/29
CPCG06F16/29
Inventor 周科松
Owner 周明儒
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