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Proceedings Paper

A radar array to locate buried landmines using the radar/acoustic technique
Author(s): B. Wiemeyer; V. Wright; C. A. Shipley
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Paper Abstract

An array of compact, inexpensive radars has been developed that utilizes commercial Doppler radar transceivers and box horn array antennas operating in the near field. The 25 x 25 radar unit array acts as a set of vibrometers that detect the acoustic mechanical resonances of buried land mines by sensing the ground motion above them. Operating with the antenna apertures 35 cm above the ground, spatial resolution, grid spacing, and location accuracy are 10 cm. The outputs of each radar unit, voltages directly proportional to the amplitude of the ground vibration displacement, include in-phase and quadrature components that are digitized to 18 bits resolution. A portable PC based LabVIEW program serves as the data processor to provide 25 simultaneous DFT spectra that isolate the mine resonances. Tests showed that the radar derived spectra are clearly discernible but, to some extent, subject to fluctuations due to coherent scattering from features on rough ground surface. One partially successful attempt to ameliorate these fluctuations is discussed.

Paper Details

Date Published: 10 June 2005
PDF: 10 pages
Proc. SPIE 5794, Detection and Remediation Technologies for Mines and Minelike Targets X, (10 June 2005); doi: 10.1117/12.606043
Show Author Affiliations
B. Wiemeyer, Technology Service Corp. (United States)
V. Wright, Technology Service Corp. (United States)
C. A. Shipley, Technology Service Corp. (United States)

Published in SPIE Proceedings Vol. 5794:
Detection and Remediation Technologies for Mines and Minelike Targets X
Russell S. Harmon; J. Thomas Broach; John H. Holloway Jr., Editor(s)

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