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《Science of Surveying and Mapping》 2008-S3
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Fitting of circles based on orthogonal distance

DING Ke-liang①,LIU Quan-li②,CHEN Xiang ③ ①Beijing University of Civil Engineering and Architecture,School of Geomatics and Urban Information,Beijing 100044,China; ②China National Petroleum East geophysical Companies,Center Surveying Service of Equipment-department,Zhuozhou 072751,China; ③Geologic Party No.301,Hunan Province Geologic Bureau of Nuclear Industry,Changsha 410114,China)  
In this paper the method of Least-Squares orthogonal distance fitting of circles are presented,based on analysis the criterion for circle fitting. The criterion is to minimize the square sum of the orthogonal distance,the model and algorithm are deduced based on indirect adjustment,the result is illustrated through a example.
【Fund】: 现代工程测量国家测绘局重点室基金
【CateGory Index】: P207
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