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Canadian Journal of Remote Sensing
Journal canadien de télédétection
Volume 30, 2004 - Issue 3
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Review

A review of polarimetry in the context of synthetic aperture radar: concepts and information extraction

Pages 380-407 | Published online: 02 Jun 2014
 

Abstract

This study provides an update of the polarimetric tools currently being used for optimum information extraction from polarimetric synthetic aperture radar (SAR) images. The basics of polarimetric theory are summarized and discussed in the context of SAR. Calibration of polarimetric SAR, which is an important issue for the extraction of meaningful polarization information, is reviewed. Information extraction using the scattered and received wave parameters and target decomposition theory is considered. In particular, the use of coherent versus incoherent target decomposition is discussed and the practical limitations of these target decompositions are outlined. Speckle filtering and classification of polarimetric SAR images are also thoroughly analyzed, and the important directions for future research are outlined.

Cette étude fournit une remise à jour des outils utilisés présentement pour l'extraction de l'information polarimétrique des images radar à ouverture synthétique (ROS). Les bases de la théorie de la polarimétrie sont reconsidérées dans le cadre du ROS. Les méthodes d'étalonnage du ROS polarimétriques sont revues. L'extraction de l'information polarimétrique à partir des paramètres de l'onde diffusée est reconsidérée ainsi que la théorie de la décomposition de cibles. En particulier, l'utilisation de la décomposition cohérente versus la décomposition incohérente est remise en question. Le filtrage du chatoiement et la classification des images polarimétriques sont revus. Les nouvelles orientations de la recherche dans le domaine sont définies.

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