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Ultra-wideband multistatic SAR for the detection and location of landmines

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2 Author(s)
Lloyd, D. ; Dept. of ITEE, Univ. of Queensland, Brisbane, Qld., Australia ; Longstaff, I.D.

Techniques for improving the signal to clutter ratio of an ultra-wideband SAR designed to detect small mine-like objects in the surface of the ground were investigated. In particular, images were collected using different bistatic antenna configurations in an attempt to decorrelate the clutter with respect to the targets. The images were converted to a reference depression angle, summed, and then converted to ground coordinates. The resulting target strengths were then compared with the amplitude distribution of the ground clutter to show the improvement obtained. While some improvement was demonstrated, this was for the relatively easy scenario of targets on the surface partially obscured by grass. Detection based on thresholding the raw RF signal (the bipolar response) rather than the envelope (baseband I2+Q2) was also considered to further enhance target-to-clutter ratios.

Published in:

Radar, Sonar and Navigation, IEE Proceedings -  (Volume:150 ,  Issue: 3 )