Laser Doppler vibrometer-based anti-personnel mine detection

Acoustic-to-seismic (A/S) coupling has been used successfully to locate anti-tank (AT) mines with a high probability of detection and a low false alarm rate. Due to the generally smaller size and large variability in the shapes and sizes of anti-personnel (AP) mines, AP mine detection is more challenging than AT mine detection. This paper discusses the analysis results of A/S coupling mine detection data for AP mines collected using a laser Doppler vibrometer-based mine detection system at test minefields during two years. Important data features indicating the presence of a mine include the ratio of the velocity magnitude of the ground surface over and away from the target, and the presence of wave-like or scattering phenomena. The analysis reveals the relationship between the wavelength of the excitation and the target size as well as between the scanning spatial resolution and the target size and shape