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《Beijing Surveying and Mapping》 2011-01
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Establishment and Accuracy Analusis of GPS Coordinates System Transformation Model

DENG Rong-rong1 ZHANG Mei-wei1 SONG Xuan-bin1,2(1.Anhui University of Science and Technology,Huainan Anhui 232001,China;2.Huainan JINGYI Surveying and Mapping Services Co.,Ltd,Huainan Anhui 232001,China)  
The global positioning system(GPS) technology is wildly used in many fields.The GPS observation achievements are usually the geodetic coordinate or its subtraction of system WGS-84,but what we need is the coordinate of ground points which in national coordinate system or local independent coordinate system.Establish Coordinate system transformation model and analyze the precision of the model,according to at least three public points of two sets of geodetic coordinates by using least-square method to solve for conversion parameter.Take WGS-84 coordinates convert to BJ-54 coordinates for example to introduce the wide range of GPS coordinates system transformation.
【CateGory Index】: P228.4
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