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Citació: Carlos López-Martínez, Xavier Fabregas. (2003). Polarimetric SAR Speckle Noise Model. IEEE Transactions on geoscience and remote sensing, 41 (10): 2232-2242. ISSN:0196-2892
Títol: Polarimetric SAR Speckle Noise Model
Autor: López Martínez, Carlos Veure Producció científica UPC; Fabregas Canovas, Francisco Javier Veure Producció científica UPC
Editorial: IEEE Institute Electrical Electronics Engineers INC
Data: 31-oct-2003
Tipus de document: Article
Resum: Synthetic aperture radar (SAR) data are affected by speckle noise, originated by the SAR system’s coherent nature. The problem of speckle noise in one-dimensional (1-D) data is already solved, as speckle has a multiplicative characteristic. SAR polarimetry represents an extension to multidimensional data by the use of polarization wave diversity. As a consequence of the existence of a correlation degree between the SAR images, the 1-D speckle noise model cannot be extended to multidimensional SAR data. This paper is devoted to present a completely new speckle noise model for the complex covariance matrix describing polarimetric SAR data in the distributed scatterers case. As will be shown, this new model is able to identify which are the noise mechanisms in all the covariance matrix elements. The speckle noise model is validated by using real L-band polarimetric data acquired with the German E-SAR sensor.
Descripció: Synthetic aperture radar (SAR) data are affected by speckle noise, originated by the SAR system's coherent nature. The problem of speckle noise in one-dimensional (1-D) data is already solved, as speckle has a multiplicative characteristic. SAR polarimetry represents an extension to multidimensional data by the use of polarization wave diversity. As a consequence of the existence of a correlation degree between the SAR images, the 1-D speckle noise model cannot be extended to multidimensional SAR data. This paper is devoted to present a completely new speckle noise model for the complex covariance matrix describing polarimetric SAR data in the distributed scatterers case. As is shown, this new model is able to identify which are the noise mechanisms in all the covariance matrix elements. The speckle noise model is validated by using real L-band polarimetric data acquired with the German E-SAR sensor.
ISSN: 0196-2892
URI: http://hdl.handle.net/2117/10269
Apareix a les col·leccions:Departament de Teoria del Senyal i Comunicacions. Articles de revista
RSLAB - Remote Sensing Research Group. Articles de revista
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