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Proceedings Paper

Subsidence monitoring using ascending and descending SAR data based on coherent target DInSAR
Author(s): Yixian Tang; Chao Wang; Hong Zhang; Li Tao
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Paper Abstract

Persistent Scatterer Interferometry (PSI) has been wildly applied to subsidence monitoring over a long temporal scale, which overcomes the problems caused by temporal and geometric decorrelations and the atmospheric dishomogeneities in conventional DInSAR by only considering the coherent pixels on temporal scale. Recently, only ascending or descending SAR data are used in most of PSI works, which is often subject to absence of SAR data in some years, continuous subsidence monitoring is not available. In this study, to realize the continuously deformation monitoring, both ascending and descending ENVISAT ASAR acquisitions of Suzhou city from 2003-2007 are taken into account. To process the two data sets at the same time, a modified linear deformation model is introduced into Coherent Target DInSAR (CT-DInSAR) technique. The result obtained in this paper suggested that by using ascending and descending orbit SAR data, more SAR acquisitions can be used in SBAS technique and continuous deformation monitoring can be operational.

Paper Details

Date Published: 4 November 2010
PDF: 6 pages
Proc. SPIE 7841, Sixth International Symposium on Digital Earth: Data Processing and Applications, 78410J (4 November 2010); doi: 10.1117/12.873214
Show Author Affiliations
Yixian Tang, Ctr. for Earth Observation and Digital Earth (China)
Chao Wang, Ctr. for Earth Observation and Digital Earth (China)
Hong Zhang, Ctr. for Earth Observation and Digital Earth (China)
Li Tao, Ctr. for Earth Observation and Digital Earth (China)


Published in SPIE Proceedings Vol. 7841:
Sixth International Symposium on Digital Earth: Data Processing and Applications

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