Title :
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
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;
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
DOI :
10.1109/APSAR.2009.5374135
