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《Beijing Surveying and Mapping》 2007-04
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The Optimal Choice of Common Points in Three Dimensional Coordinate Transformation

NIU Lin1,2 CHEN Jian-ping1,2 TIAN Yi1,2 1 Department of Global Science and Resource,CUCB,Beijing,100083 2 Beijing Key Laboratory of Research and Exploration Information of Land Resource,Beijing,100083  
The transfer parameters of three dimensional coordinate transformations directly influence the precision of transfer points,and they are also related with the distribution and precision of common points.In this paper,the transfer parameters are calculated with target function of minimizing the fit errors of transfer points,and then the common points of low precision and unreasonable distribution will be gradually eliminated.Ultimately,for all the transfer points,the transfer parameters can be locally optimized.According to the simulated experiments,it is proved that the transfer parameters and transfer points obtained by this method have higher precision than that of traditional methods.
【Fund】: 北京市地下空间资源潜力评价技术研究(编号:JD104910556)
【CateGory Index】: P226.3
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