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11 September 2003 Wideband 3D imaging radar using Archimedean spiral antennas
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Ground Penetrating Radar has been applied for several years to the problem of detecting both anti-personnel and anti-tank landmines. Most of the evaluation effort has focused on obtaining the end-to-end performance metrics (e.g. Pd and pfa ) of complete detection systems. This is the third in a series of papers in which we focus on the specific performance of one critical component of GPR systems: the antenna subsystem. In this paper, we examine several free-space characteristics of Planning Systems Inc. Archimedean Spiral Antennas. Specifically, we (1) investigate a spurious signal response observed with a large metal plate reflecting target, (2) determine gain and phase properties of these antennas, (3) calculate the antennas' impulse response, and (4) image several targets to validate our approach.
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William W. Clark, Peter R. Lacko, James M. Ralston, and Elvis Dieguez "Wideband 3D imaging radar using Archimedean spiral antennas", Proc. SPIE 5089, Detection and Remediation Technologies for Mines and Minelike Targets VIII, (11 September 2003);

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