A study of acoustic methods for compliant landmines detection by using the surface acceleration parameter

This paper presents the experimental results for an acousto-seismic buried landmine detection method. The excitation source used was a woofer loudspeaker and lightweight silicon MEMS accelerometers were adopted to measure the ground surface acceleration. The experiments were performed in an outdoor unconsohdated sand test-bed with several kinds of compliant and rigid test-objects, all buried at depth of 4cm and placed at distances ranging from 10cm to 50cm. The different responses of the compliant and rigid objects was processed in both time and frequency domains. A novel audio representation of the acquired signals was developed for exploiting the human-hearing capabilities for the identification of buried objects.