High Resolution Differential Interferometric Stacking via Adaptive Spatial Phase Filtering
Goel, Kanika and Adam, Nico (2011) High Resolution Differential Interferometric Stacking via Adaptive Spatial Phase Filtering. IEEE Geoscience and Remote Sensing Symposium (IGARSS), 2011, Vancouver, Canada.
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We present a new adaptive spatial filtering algorithm for accurate estimation of differential interferometric phase and coherence, to better support deformation monitoring techniques such as SBAS. The objective is high resolution interferometric phase estimation even in non-urban areas, where there is high phase noise. The typical method to enhance interferograms is a complex boxcar (rectangular) multilooking, leading to a low spatial resolution. This is a disadvantage, especially, with the launch of advanced SAR satellites such as TerraSAR-X. We propose a technique which provides improved interferograms without loosing the high geometrical resolution. Also, the coherence of the interferograms is estimated, which is important for various applications e.g. guiding phase unwrapping algorithms, selection of pixels for deformation monitoring etc. Our technique is based on identifying statistically homogenous pixels in a neighbourhood, and using them for phase flattening and finally, phase filtering via adaptive complex averaging (multilooking). We demonstrate our technique on TerraSAR-X data of Germany’s Bierwang gas reservoir.
|Document Type:||Conference or Workshop Item (Speech)|
|Title:||High Resolution Differential Interferometric Stacking via Adaptive Spatial Phase Filtering|
|Page Range:||pp. 1341-1344|
|Keywords:||Differential Interferograms, Non-Urban Areas, High Resolution SAR, Phase Filtering, Small Baseline Subset Algorithm (SBAS).|
|Event Title:||IEEE Geoscience and Remote Sensing Symposium (IGARSS), 2011|
|Event Location:||Vancouver, Canada|
|Event Type:||international Conference|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W - no assignement|
|DLR - Research area:||Space|
|DLR - Program:||W - no assignement|
|DLR - Research theme (Project):||W -- no assignement|
|Institutes and Institutions:||Remote Sensing Technology Institute > SAR Signal Processing|
|Deposited By:||Kanika Goel|
|Deposited On:||19 Aug 2011 09:29|
|Last Modified:||04 Apr 2013 14:03|
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