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21 September 2004 Anti-tank and side-attack mine detection with a forward-looking GPR
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In order to detect anti-tank mines at standoff distances, we have developed a forward-looking synthetic aperture ground penetrating radar (FLGPR). The system operates over the frequency band 766~MHz to 3.8~GHz. Our FLGPR system uses a Mill's cross transmit-receive array configuration. The receive array contains 46 Archimedean spiral antennas spaced across a 3.43 meter horizontakl aperture. The transmit aperture can be configured to contain up to 15 transmitters in one of two vertical configuations. Data is acquired as the system continuously moves forward at a speed of 2 to 8 kph. Synthetic aperture nearfield beamforming, a form of multi-look processing, is used to reduce clutter and produce significantly improved images of buried targets. Testa against actual buried mines on U.S. Army mine lanes indicate that the system can detect buried metallic and plastic anti tank mines. Images and analysis of data including blind test results are presented.
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Marshall R. Bradley, Thomas R. Witten, Michael Duncan, and Robert McCummins "Anti-tank and side-attack mine detection with a forward-looking GPR", Proc. SPIE 5415, Detection and Remediation Technologies for Mines and Minelike Targets IX, (21 September 2004);

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