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Time-frequency analysis of synthetic aperture radar images of selected ordnance pieces

[+] Author Affiliations
David Wong, Lam Nguyen, Guillermo C. Gaunaurd, Anders Sullivan

Army Research Laboratory, 2800 Powder Mill Road, Adelphi, Maryland 20783-1197

J. Electron. Imaging. 18(2), 023011 (May 28, 2009). doi:10.1117/1.3134134
History: Received July 24, 2008; Revised March 20, 2009; Accepted April 03, 2009; Published May 28, 2009
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We present a modification of the standard time-frequency (t-f) analysis for landmine detection. The modification is adapted to synthetic aperture radar (SAR) images that may or may not exhibit near-circular symmetry. Each prospective SAR image is here sliced along several directions to generate t-f plots along those chosen cuts, and the resulting 2-D plots are correlated in pairs to obtain a relevant metric, which is defined as their ratio. This metric has served to distinguish targets from clutter objects in the various cases examined here. The procedure was validated using a dataset obtained in a recent field test, and the results are shown.

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Citation

David Wong ; Lam Nguyen ; Guillermo C. Gaunaurd and Anders Sullivan
"Time-frequency analysis of synthetic aperture radar images of selected ordnance pieces", J. Electron. Imaging. 18(2), 023011 (May 28, 2009). ; http://dx.doi.org/10.1117/1.3134134


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