Doppler ultrasound techniques for landmine detection

Andi G. Petculescu; James M. Sabatier

doi:10.1117/12.541421

21 September 2004 Doppler ultrasound techniques for landmine detection

Proceedings Volume 5415, Detection and Remediation Technologies for Mines and Minelike Targets IX; (2004) https://doi.org/10.1117/12.541421
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

The paper presents measurements taken with a scanning ultrasonic Doppler vibrometer on a landmine buried separately in sand and in grass-covered soil. The signal obtained with a laser Doppler vibrometer experiences a large variability that is due to loss of spatial coherence upon scattering from moving grass blades. Ultrasonic sensing is not affected by this limitation since the acoustic speckle is much larger than its optical counterpart. Moreover, the slightest hint of air motion enhances the motion of the grass blades, which adds to the optical decoherence and subsequent loss of useful signal. It is shown also that the ultrasonic system has no problem penetrating the layer of grass and detecting the location of the buried target excited by a mechanical shaker.

Citation Download Citation

Andi G. Petculescu and James M. Sabatier "Doppler ultrasound techniques for landmine detection", Proc. SPIE 5415, Detection and Remediation Technologies for Mines and Minelike Targets IX, (21 September 2004); https://doi.org/10.1117/12.541421

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