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《Surveying and Mapping of Geology and Mineral Resources》 2008-03
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Transformation between Alignment Coordinates and Engineering Coordinates and Its Application

SUN Hui-min,YAO Lian-bi(Dept.of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China)  
In belt engineering like highway and railway,point positional coordinates correspond to their mileages and offset distances.Given the mileage and offset distance,the positional coordinates could be calculated;while,in many situations,the inverse calculation is needed.For instance,in location survey of road,several stakes should be added in special terrain and ground objects,which demands us to determine characteristic points of the central line in survey site.And the similar cases always occur in highway repairing and the tunnel engineering.In this paper,the transformations between the two coordinate systems are discussed in emphasis;and then a specific calculation is given according to an example,which also proves that the method is feasible.
【CateGory Index】: P226.3
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