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摘要：
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本文以实际工程为例 ,对 GPS定位中 WGS- 84大地坐标转换到 BJ- 5 4平面直角坐标的两种七参数坐标转换方法的误差进行了分析 ,指出在平面坐标 x、y上 ,两种方法计算精度相当 ,而在高程 h上 ,采用空间直角坐标转换方法的精度相对较高
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Taking an actual project as an example, the errors in the conversion methods of two 7 parameter coord inate systems when the geodetic coordinate WGS 84 is being converted to plane orthogonal coordinate BJ 54 are analyzed The accuracy of the calculated results on x and y of the plane coordinates is equal in the two methods, but for elevation h ,the accuracy of the conversion method for spatial orthogonal coordinates is relatively higher
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