Method for identifying special road sections by ultra-large-scale GPS data

Abstract

The invention belongs to the technical field of GPS spatial data mining. Nine derived variables 0-1 are added for each piece of GPS record data, and value assignment is performed according to a changequantity of two pieces of continuous GPS data of the same vehicle. The processing steps after the value assignment are as follows: 1, grid division is performed on a WGS84 coordinate plane; 2, a digital road diagram in a target area is generated; 3, horizontal / vertical adjacent road grids are considered as one road section and a sampled population; 4, statistics is performed on times of enablingvalues of the derived variables 0-1 in the GPS record data to be 1 according to road sections; and 5, according to the road sections, if the acceleration times / the total times are greater than or equal to 0.75, the road section is determined as an acceleration section, and others are deduced by analogy.

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...

AI Technical Summary

Problems solved by technology

[0007] 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