jgg     2010 30 (4):  106-108    ISSN: 0412-1961  CN: 21-1139/TG A NEW TEST METHOD BASED ON SPACE VECTOR IN 3D CIRCLE FITTING Pan Guorong 1, 2) ;and Li Huaifeng 1) 1)Department of Surveying and Geo-informatics, Tongji University, Shanghai 2000922)Key Laboratory of Modern Engineering Surveying, SBSM, Shanghai 200092 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null