PolInSAR Analysis of X-Band Data Over Vegetated and Urban Areas
Garestier, Franck and Dubois-Fernandez, Pascale and Dupuis, Xavier and Paillou, Philippe and Hajnsek, Irena (2006) PolInSAR Analysis of X-Band Data Over Vegetated and Urban Areas. IEEE Transactions on Geoscience and Remote Sensing, 44 (2), pp. 356-364. ISSN 0196-2892.
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This paper investigates the polarimetric and polarimetric interferometric synthetic aperture radar (PolInSAR) information contained in the high-resolution X-band data acquired by the RAMSES airborne SAR system over an area around Avignon, France containing bare surfaces, vegetation and urban areas. The interferometric coherences are computed over natural and urban areas for all possible baseline copolar polarizations. In the complex plane, the obtained regions of coherence corresponding to most vegetation areas display small angular extents, meaning that if penetration occurs in the foliage, it is shallower than the system height accuracy. To quantify the PolInSAR information, an analysis of the interferometric height accuracy is first performed, and the results are compared with those associated with a theoretical and an empirical model. Concerning vegetation, a 6-m height difference is measured between the different polarimetric phase centers over a sparse pine forest, probably due to the presence of holes in the canopy. Crop study reveals also that wheat-type fields present oriented media properties at X-band due to their vertical structure. Over urban areas, in most cases, building height can be accurately obtained by using Pauli polarimetric phase center information.
|Title:||PolInSAR Analysis of X-Band Data Over Vegetated and Urban Areas|
|Journal or Publication Title:||IEEE Transactions on Geoscience and Remote Sensing|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 356-364|
|Keywords:||Height, polarimetric interferometric synthetic aperture radar (PolInSAR), synthetic aperture radar (SAR), vegetation, X-band|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||W -- no assignement (old)|
|Institutes and Institutions:||Microwaves and Radar Institute > SAR Technology|
|Deposited By:||Sibylle Radzuweit|
|Deposited On:||01 Mar 2006|
|Last Modified:||27 Apr 2009 05:01|
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