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- W2000950213 abstract "A mine sensing system based on acoustic-to-seismic coupling sonifies the ground with high amplitude (120 dB), broadband (80–300 Hz) sound and measures the resulting ground vibration with a scanning laser Doppler vibrometer (LDV). Images produced by these scans show a distinct contrast in several frequency bands between ground vibrations over a buried mine and not over the mine. In order to reduce the risk to the vehicle and its operators and to allow a safe stopping distance for the vehicle, it is desirable that the system looks a significant distance in front of the vehicle. Experiments were conducted to investigate the feasibility of a forward-looking system. In a forward-looking system, both the sound source and the LDV are moved farther from the scanned area. This configuration both reduces the sound pressure level at the scanned area and decreases the angle at which the LDV beam strikes the ground. These effects reduce the contrast between the over-mine and off-mine signals. In addition, the image is distorted at the shallower LDV-ground angles. Results from these experiments will be presented and discussed. [Work supported by U.S. Army Communications-Electronics Command, Night Vision and Electronic Sensors Directorate.]" @default.
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- W2000950213 date "2001-05-01" @default.
- W2000950213 modified "2023-09-25" @default.
- W2000950213 title "Forward‐looking acoustic mine sensing" @default.
- W2000950213 doi "https://doi.org/10.1121/1.4744230" @default.
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