Title :
The impact of terrain correction of polarimetric SAR data on glacier change detection
Author :
Akbari, Vahid ; Larsen, Yngvar ; Doulgeris, Anthony P. ; Eltoft, Torbjørn
Author_Institution :
Dept. of Phys. & Technol., Univ. of Tromso, Tromso, Norway
Abstract :
This paper investigates the impact of terrain correction on change detection results. We firstly assess the effects of topography on radar brightness and show how we can produce the radiometrically terrain corrected multilook complex (MLC) covariance data. Next, changes on radar cross section as a function of polarization states due to azimuth slope variations will be studied. Finally experimental results on glacier dataset are shown by focusing on change detection results before and after terrain corrections.
Keywords :
glaciology; remote sensing by radar; synthetic aperture radar; terrain mapping; azimuth slope variations; glacier change detection; glacier dataset; multilook complex covariance data; polarimetric SAR data; polarization state function; radar brightness; radar cross section; terrain correction; terrain corrections; topography effects; Azimuth; Geometry; Radar imaging; Radiometry; Spaceborne radar; Synthetic aperture radar; Synthetic aperture radar; azimuth slope correction; glacier change detection; polarization; radiometric terrain correction;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6352456
