Title :
Interferometric multi-look techniques for SAR data
Author :
Scheiber, R. ; Bothale, V.M.
Author_Institution :
Deutsches Zentrum fu Luft- und Raumfahrt e.V., Wessling, Germany
Abstract :
This paper addresses the benefits of the spectral domain multi-look approach for SAR interferometry. A comparison with the wide spread spatial averaging filter is included in the beginning. Next, it is shown that the flexibility of the spectral domain multi-look technique can be used for improved motion compensation and further for precisely updated estimation of azimuth misregistration offsets. This leads finally to the compensation of residual motion errors in case of multi-pass airborne SAR interferometry, e.g. for the E-SAR system of DLR.
Keywords :
airborne radar; geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; synthetic aperture radar; terrain mapping; InSAR; SAR interferometry; azimuth registration; geophysical measurement technique; image registration; interferometric SAR; land surface; motion compensation; multi-look method; multi-pass airborne method; multilook method; radar remote sensing; residual motion errors; spectral domain multi-look approach; synthetic aperture radar; terrain mapping; Azimuth; Filters; Image resolution; Interferometry; Motion compensation; Motion estimation; Phase noise; Remote sensing; Signal to noise ratio; Smoothing methods;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1024978
