Highway stake mark and longitude and latitude mapping method for locking key points

Abstract

The invention discloses a highway stake mark and longitude and latitude mapping method for locking key points. The method comprises the following steps: step 1, collecting information of a section ofhighway path through a GIS map; 2, setting stake mark values of head and tail coordinate points of the expressway path; 3, selecting key points needing to be locked on the GIS map, automatically collecting longitude and latitude, and filling pile number values; and 4, dividing the selected expressway path into a plurality of sections (L1... Li... Ln) according to the key points, and calculating the stake mark value mapped by the longitude and latitude coordinate points by adopting a zooming mode for each section. According to the method, the stake mark values of the GIS longitude and latitudecoordinates are calculated through a method of locking key point subsection scaling, mutual mapping of stake marks on the expressway and the GIS longitude and latitude coordinates is achieved, and particularly, the accuracy of the key point stake marks is guaranteed by locking key points (toll stations, bridges, tunnels, service areas, entrances and exits and the like).

Description

technical field [0001] The invention relates to the technical field of expressway informatization, in particular to a method for mapping expressway stake numbers and longitudes and latitudes by locking key points. Background technique [0002] In traditional expressway construction and operation management, stake numbers are used to number and locate expressway sections, structures, toll stations, etc. This simple and effective positioning method has played an important role in the past construction and management, and established a national unified expressway chainage network. However, in the face of the current more popular electronic maps, the expressway system marked with stake numbers has also exposed some problems. For example, when an accident occurs on an expressway, the person concerned can easily use the mobile phone to locate the current GPS coordinates, but cannot easily obtain the expressway stake number; However, it cannot be pushed to electronic navigation t...

AI Technical Summary

Problems solved by technology

However, in the face of the current more popular electronic maps, the expressway system marked by stake numbers also exposed some problems

For example, when an accident occurs on an expressway, the person concerned can easily use the mobile phone to locate the current GPS coordinates, but cannot easily obtain the expressway stake number; However, it cannot be pushed to the electronic navigation through the latitude and longitude

[0003] The key reason for these problems is that it is impossible to correspond the chainage of the expressway with the latitude and longitude coordinates in GIS

Firstly, because the stake number data is relatively sparse, mainly kilometer stakes, and the GIS map has not entered the information of the km stake, so it is impossible to correspond; secondly, because the distance marked by the stake number is inconsistent with the distance calculated in the GIS, it is impossible to Mapping the entire road section through the latitude and longitude of the first and last positions of the expressway and the chainage will lead to inconsistencies in the chainage at key positions

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