Title :
A three-step phase correction approach for airborne repeat-pass interferometric SAR data
Author_Institution :
Deutsches Zentrum fur Luft und Raumfahrt, Microwaves & Radar Inst., Oberpfaffenhofen, Denmark
Abstract :
The operational use of airborne interferometric SAR data acquired in repeat-pass mode for DEM generation, polarimetric SAR interferometry, SAR tomography, and differential SAR interferometry is restricted due to imperfections of the available GPS-based motion compensation data, as well as due to the adopted strategies for efficient SAR raw data processing and motion compensation. A three-step correction approach is proposed, partly based on the availability of a (high resolution) digital elevation model of the area of interest, which might be obtained e.g. through the use of single-pass SAR interferometry. Attention is given to the implementation of these methods for squinted geometries. The performance is demonstrated using data of he DLR-owned E-SAR system in repeat-pass imaging mode.
Keywords :
airborne radar; data analysis; geophysical techniques; image processing; interferometry; motion compensation; synthetic aperture radar; DEM generation; E-SAR system; GPS; SAR raw data processing; SAR tomography; airborne SAR data; differential SAR interferometry; digital elevation model; global positioning system; interferometric SAR data; motion compensation; phase correction; polarimetric SAR interferometry; repeat-pass SAR data; repeat-pass imaging mode; repeat-pass mode; squinted geometries; synthetic aperture radar; Airborne radar; Azimuth; Computer vision; Data processing; Error correction; Interferometry; Motion compensation; Radar polarimetry; Surfaces; Synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1294054
