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International Journal of Antennas and Propagation
Volume 2013 (2013), Article ID 468380, 5 pages
http://dx.doi.org/10.1155/2013/468380
Research Article

Modeling Multilook Magnitude and Phase in Extremely Heterogeneous Clutter

College of Electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073, China

Received 30 December 2012; Accepted 18 January 2013

Academic Editor: Deren Li

Copyright © 2013 Gui Gao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper proposes a joint distribution of magnitude and phase for multilook SAR interferogram in extremely heterogeneous clutter. The presented theoretical distribution, called simply here distribution and derived from the multiplicative model and the known joint distribution of the homogeneous clutter, is shown to be able to model the extremely heterogeneous clutter areas. Moreover, we estimate distribution parameters by means of the well-known method-of-log-cumulants (MoLC). The experimental results applied on actual dual-channel SAR images prove the good performance of the proposed distribution.