jgg     2011 31 (增1):  90-93    ISSN: 0412-1961  CN: 21-1139/TG AN IMPROVED ALGORITHM OF WEIGHTEDLEAST-SQUARES FOR PHASE UNWRAPPING Dong Chunmin 1) ; Liu Guolin 1,2) ; Yu Shengwen 1) ; Liu Weike 1) ; and Zhou Wei 1) 1)Geomatics College, Shandong University of Science and Technology, Qingdao 2665102)Key Laboratory of Surveying and Mapping Technology on Island and Reef, State Bureau of Surveying and Mapping, Qingdao 266510 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null