DocumentCode :
1374260
Title :
Phenomenology of P-Band Scattering From a Tropical Forest Through Three-Dimensional SAR Tomography
Author :
D´Alessandro, Mauro Mariotti ; Tebaldini, Stefano
Author_Institution :
Dipt. di Elettron. e Inf., Politec. di Milano, Milan, Italy
Volume :
9
Issue :
3
fYear :
2012
fDate :
5/1/2012 12:00:00 AM
Firstpage :
442
Lastpage :
446
Abstract :
The aim of this letter is to discuss recent results from the tomographic analysis of the P-band synthetic aperture radar multibaseline data set acquired by ONERA over French Guyana, in the frame of the European Space Agency campaign TropiSAR. Such a data set is characterized by a vertical resolution of about 20 m, whereas forest height ranges from 20 to 40 m. These features make it possible to map the 3-D distribution of the scene complex reflectivity in up to three independent layers by coherent focusing, i.e., without assuming any physical model or employing superresolution techniques. The most relevant features within the observed results are the presence of dihedral-like scattering in the ground layer, which is hardly noticeable in the original single-look complex data, and the substantial invariance of the innermost forest layer to topographic slopes.
Keywords :
backscatter; radar polarimetry; remote sensing by radar; synthetic aperture radar; tomography; vegetation; vegetation mapping; European Space Agency; French Guyana; ONERA; P-band scattering; P-band synthetic aperture radar multibaseline data set; TropiSAR campaign; coherent focusing; ground layer dihedral-like scattering; innermost forest layer invariance; radar polarimetry; scene complex reflectivity; size 20 m to 40 m; three-dimensional SAR tomography; tomographic analysis; topographic slope; tropical forest; Image resolution; Radar imaging; Remote sensing; Scattering; Surface topography; Tomography; Forests; polarimetry; synthetic aperture radar (SAR); tomorgraphy;
fLanguage :
English
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
Publisher :
ieee
ISSN :
1545-598X
Type :
jour
DOI :
10.1109/LGRS.2011.2170658
Filename :
6078396
Link To Document :
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