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Proceedings Paper

Acoustic cueing for surveillance and security applications
Author(s): Brian G. Ferguson; Kam W. Lo
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Paper Abstract

Acoustic sensing systems are used to detect, localize, track and classify sources of military interest in real time with negligible false alarm rates. Automated acoustic systems are able to cue response systems and devices such as cameras for source identification. Two defense applications are demonstrated: one involves remote land-based surveillance where an array of unattended passive acoustic ground sensors automatically cues a day/night camera to observe the passage of ground vehicles, the landing of air vehicles on an isolated air strip, and the transit of motor-powered watercraft in estuarine waters. The video imagery is compressed and relayed via satellite to a central monitoring facility for input to the decision and intelligence processes. The other application is for in-harbor force protection and port infrastructure security where a high-frequency high-resolution monostatic active sonar automatically detects, localizes and tracks fast inshore surface watercraft in real time. A cavitating propeller forms a bubble wake that lasts several minutes and is highly reflective of the incident sonar energy. The wake, which traces the trajectory of the watercraft, is clearly delineated on the sonar display. The active sonar reliably estimates the instantaneous position of the moving source at each point along its path of travel. The sonar can be used to pan an imaging device to aid identification of the moving source or to vector autonomous response craft for intercept purposes.

Paper Details

Date Published: 10 May 2006
PDF: 7 pages
Proc. SPIE 6201, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense V, 62011K (10 May 2006); doi: 10.1117/12.674263
Show Author Affiliations
Brian G. Ferguson, Defence Science and Technology Organisation (Australia)
Kam W. Lo, Defence Science and Technology Organisation (Australia)


Published in SPIE Proceedings Vol. 6201:
Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense V
Edward M. Carapezza, Editor(s)

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