PALSAR interferometry for urban subsidence monitoring: An experiment in Shanghai area

Author

Hu, Shouchao ; Wu, Jicang ; Ban, Baosong ; Zhang, Lina

Author_Institution

Dept. of Surveying & Geo-Inf., Tongji Univ., Shanghai, China

fYear

2009

fDate

26-30 Oct. 2009

Firstpage

140

Lastpage

143

Abstract

In this paper, we apply the Advanced Land Observing Satellite (ALOS) PALSAR data to study the urban subsidence condition in Shanghai, China. The baseline condition, troposphere delay, DEM accuracy mainly limit the capability of PALSAR interferometry, and the influences are evaluated. Six interferograms are analysed in this research, based on D-InSAR technology. We introduce a polynomial to fit the orbit error in each interferogram. After that we use a weighed interferogram stacking method to reduce the influence of atomospheric delay, and to evaluate the mean deformation rate as well.

Keywords

geomorphology; geophysical techniques; remote sensing by radar; spaceborne radar; synthetic aperture radar; ALOS; Advanced Land Observing Satellite PALSAR data; China; D-InSAR technology; DEM accuracy; PALSAR interferometry; Shanghai; interferogram stacking method; mean deformation rate; orbit error; polynomial fitting method; troposphere delay; urban subsidence condition; Delay; Global Positioning System; Monitoring; Noise reduction; Phase noise; Polynomials; Radar tracking; Stacking; Synthetic aperture radar interferometry; Terrestrial atmosphere; InSAR; PALSAR; Stacking; Subsidence monitoring;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar, 2009. APSAR 2009. 2nd Asian-Pacific Conference on

Conference_Location

Xian, Shanxi

Print_ISBN

978-1-4244-2731-4

Electronic_ISBN

978-1-4244-2732-1

Type

conf

DOI

10.1109/APSAR.2009.5374135

Filename

5374135