jgg     2013 33 (3):  87-91    ISSN: 0412-1961  CN: 21-1139/TG LANDSLIDES MONITORING BASED ON INSAR TECHNIQUE 1) Geomatics College, Shandong University of Science and Technology, Qingdao 266590 2) Chinese Academy of Surveying and Mapping, Beijing 100830 3) Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071 Received: 2012-12-08  Revised: null  Online: 2013-06-18 Supporting info