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This article describes a laboratory experimental system used for the study of detection and feature interpretation of an object containing metal or material with magnetic properties held by people in motion. The system is designed for an analysis at very low frequency of the recorded waveform generated by people passing between two passive magnetic loop antennas, waveform that can be after processed...
The monitoring and identification of suspicious activity is necessary for protection of Critical Infrastructure. The protection is extended to an early warning area beyond the physical security perimeter. The early warning area can cover from kilometer to hundred kilometers. The analysis of soil induced vibration by walking, digging, vehicle, can provide the useful information about human activity...
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