PRELIMINARY STUDY ON MONITORING URBAN SURFACE DEFORMATION WITH SBAS
Yu Yong;Bian Zhengfu;Liu Zhenguo ;and Lei Shaogang
School of Environment and Spatial Informatics of CUMT, Xuzhou 221008
Abstract The application of conventional differential SAR interferometry (DInSAR) is limited because of temporal and spatial decorrelation. Although the permanent scatterers (PS) method could deal with the problem of decorrelation and phase delay, it must be based on a Darge number of SAR images (generally more than 25). However, the small baseline subsets (SBAS) method has the advantage. So, in this paper, 8 of SAR data acquired from January 2008 to August 2010 by the ENVISAT satellite are taken as the test data and then, the deformation of Taiyuan city is obtained with the SBAS method, and the maximum deformation rates of three sites:Wanbolin, Wujiabao and Xiaodian are -27.11 mm/a, -55.92 mm/a and -67.61 mm/a respectively. The results of deformation rate and timeseries deformation maps are consistent with the previous results,thus it has verified that the SBAS method is feasible to monitor surface deformation.
Key words ：
DInSAR
PS method
SBAS method
ENVISAT
surface deformation
Received: 01 January 1900
Corresponding Authors:
Yu Yong
Cite this article:
Yu Yong,Bian Zhengfu,Liu Zhenguo et al. PRELIMINARY STUDY ON MONITORING URBAN SURFACE DEFORMATION WITH SBAS[J]. , 2013, 33(1): 133-136.
Yu Yong,Bian Zhengfu,Liu Zhenguo et al. PRELIMINARY STUDY ON MONITORING URBAN SURFACE DEFORMATION WITH SBAS[J]. jgg, 2013, 33(1): 133-136.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2013/V33/I1/133
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