Improving Protection Agains Intruders Using Passive Sonar
conference paper
Divers and small vessels are increasingly recognized as a potential threat to high value assets. Harbour and waterside surveillance systems that are used to counter the threat of divers are usually based on active sonar, whose performance can be limited by reverberation in a harbour environment.
Passive techniques are based on the detection of the sound emitted by the target. They are covert and yield information on the sound radiated by the detected source that can be used for classification. These advantages justify considering passive sonar as the basis for a waterside surveillance system, or as a supplement to a system based on active sonar.
Experimental results illustrating some capabilities of passive techniques, such as the detection and tracking of divers and surface vessels using a network of passive nodes, are presented. The experiment was performed in collaboration with the Stevens Institute of Technology (NJ, USA). Possible uses of these techniques in either purely passive systems or to augment active systems are discussed.
Passive techniques are based on the detection of the sound emitted by the target. They are covert and yield information on the sound radiated by the detected source that can be used for classification. These advantages justify considering passive sonar as the basis for a waterside surveillance system, or as a supplement to a system based on active sonar.
Experimental results illustrating some capabilities of passive techniques, such as the detection and tracking of divers and surface vessels using a network of passive nodes, are presented. The experiment was performed in collaboration with the Stevens Institute of Technology (NJ, USA). Possible uses of these techniques in either purely passive systems or to augment active systems are discussed.
TNO Identifier
471630
Source title
Proceedings 4th International Conference and Exhibition on Underwater Acoustic Measurements - Technologies & Results - UAM 2011, 20-24 June 2011, Kos, Greece