Polarimetric SAR Speckle Noise Model
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hdl:2117/10269
Tipus de documentArticle
Data publicació2003-10-31
EditorIEEE Institute Electrical Electronics Engineers INC
Condicions d'accésAccés obert
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Abstract
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.
CitacióCarlos López-Martínez, Xavier Fabregas. (2003). Polarimetric SAR Speckle Noise Model. IEEE Transactions on geoscience and remote sensing, 41 (10): 2232-2242. ISSN:0196-2892
ISSN0196-2892
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PolarimetricSAR.pdf | 1,310Mb | Visualitza/Obre |