Target detection in synthetic aperture radar imagery: a state-of-the-art survey

El-Darymli, Khalid and McGuire, Peter and Power, Desmond and Moloney, Cecelia (2013) Target detection in synthetic aperture radar imagery: a state-of-the-art survey. Journal of Applied Remote Sensing, 7 (1). ISSN 1931-3195

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Target detection is the front-end stage in any automatic target recognition system for synthetic aperture radar (SAR) imagery (SAR-ATR). The efficacy of the detector directly impacts the succeeding stages in the SAR-ATR processing chain. There are numerous methods reported in the literature for implementing the detector. We offer an umbrella under which the various research activities in the field are broadly probed and taxonomized. First, a taxonomy for the various detection methods is proposed. Second, the underlying assumptions for different implementation strategies are overviewed. Third, a tabular comparison between careful selections of representative examples is introduced. Finally, a novel discussion is presented, wherein the issues covered include suitability of SAR data models, understanding the multiplicative SAR data models, and two unique perspectives on constant false alarm rate (CFAR) detection: signal processing and pattern recognition. From a signal processing perspective, CFAR is shown to be a finite impulse response band-pass filter. From a statistical pattern recognition perspective, CFAR is shown to be a suboptimal one-class classifier: a Euclidian distance classifier and a quadratic discriminant with a missing term for one-parameter and two-parameter CFAR, respectively. We make a contribution toward enabling an objective design and implementation for target detection in SAR imagery.

Item Type: Article
Item ID: 1678
Additional Information: Memorial University Open Access Author's Fund
Department(s): Engineering and Applied Science, Faculty of
Date: 18 March 2013
Date Type: Publication
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