Acoustic and seismic signals of military vehicles passing between two newly-developed sensor stations separated by about 100 m distance have been measured. Five tracked and five wheeled vehicles drove with seven speeds in both directions on four lanes. Rms values rose above background at distances of several 100 m for tanks, 60 to 80 m for a medium truck, and 40 to 50 m for a light van. By processing the acoustic and seismic maxima together, tracked and wheeled vehicles were separated correctly in 94 % of the passes. An algorithm for detecting lines and harmonic series in acoustic spectra worked for eight vehicles. For vehicle-type recognition, learning-vector quantisation was used, working on the relative powers of the first 15 harmonics. This was successful in 95 to 98 % of the tracked-vehicle passes and 69 to 95 % of the wheeled-vehicle passes. These experiences and results suggest that sensor monitoring of control lines is feasible.
Acoustic-seismic detection and classification of military vehicles - developing tools for disarmament and peace-keeping
Akustisch-seismische Erkennung und Klassifizierung von Militärfahrzeugen - Entwickung von Werkzeugen für die Abrüstung und Friedenssicherung
Applied Acoustics ; 63 , 10 ; 1085-1107
2002
23 Seiten, 12 Bilder, 3 Tabellen, 16 Quellen
Aufsatz (Zeitschrift)
Englisch
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