Table of Contents
ISRN Signal Processing
Volume 2011, Article ID 651790, 10 pages
http://dx.doi.org/10.5402/2011/651790
Research Article

A Novel Method of Small Target Detection in Sea Clutter

Schoole of Electronic and Information Engineering, BeiHang University, Beijing 100191, China

Received 9 March 2011; Accepted 26 April 2011

Academic Editor: C.-W. Kok

Copyright © 2011 Peng Wu 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

Detecting low observable targets within sea clutter at low grazing angle is one of the research hotspots in radar signal processing community. In this paper, we have proposed a novel method based on polarimetric decomposition theorem. The polar characteristics of sea clutter has been analyzed, with the parameters after the decomposition of target scattering matrix. The scattering entropy and the scattering angle are the key parameters to discriminate the target from the sea clutter. The technique is designed to suppress unwanted sea clutter at polarimetric domain. Datasets from real marine radar are used to illustrate the performance of the new approach.