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Application of GPS Technology in the Surveying at Highway

Author: LiHongWu
Tutor: LiuHanBing；GaoQun
School: Jilin University
Course: Traffic and Transportation Engineering
Keywords: GPS Coordinate system Static observation Dynamic observation
CLC: U412.2
Type: Master's thesis
Year: 2005
Downloads: 491
Quote: 0
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Abstract


Starting from the global coordinate system , locate the type and form of the coordinate system , locating datum and coordinate system conversion and coordinate reference transformation . Static GPS measurements , by actual measurement engineering experience , summed up the work steps laid GPS control network of road GPS Baseline Vector Network design specifications , design criteria , level and form of cloth mesh , the basis of the existing formula relative error , in accordance with the Highway GPS measurement specifications should be greater than 1/40000 the requirement , the solution to calculate the length of the shortest side of the GPS control network 436M , and toward the long highway 20 can pass the viewpoint side length relative error calculated , the side length between 300m-500m , the relative error is greater than 1 /40000 . This article first proposed point coupled with the side -coupled form of a hierarchical network instead of the original the coupled single side of the cloth mesh form of measured coordinate data , and by comparison , determine the point coupled with side combined with the form of a hierarchical network coupled coordinates measured results in full compliance with the accuracy requirements , and operating efficiency of this method than the single side of the joint - cloth net increased 50% . This article describes the the baseline settlement and adjustment of GPS Control Network , which provides a complete basis for future GPS Highway observation . GPS dynamic measurement study for the application of GPS RTK technology works and works on outside the industry, the possibility of the implementation of dynamic measurement , easy to make better use of the results of static observation Highway flat , vertical , the cross data collection support within the industry to provide digitized data .

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CLC: > Transportation > Road transport > Road works > Planning, surveying and design > Survey
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