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
Abstract：According to the problems in the landslides monitoring using InSAR technique in practical applications, the research was carried out to monitor the landslides based on InSAR technique and multisource observations data. It monitored the landslides comprehensively using highresolution PALSAR data and multisource observations data on the basis of the method of radar interferometry. The landslides in Shijiaying which located in Fangshan region of Beijing were selected as the test area. Then it selected 7 PALSAR images during 2008 to 2010 to build 4 InSAR pairs. The monitoring precision can be achieved to 1 cm. The result proved that InSAR technique combined multisource observations data is a powerful and effective tool to measure surface deformation and study landslides.
