A buoy comprises at least one hydrophone 12, 14 to convert acoustic radiation received from an active acoustic transmitter into electronic signals, and an analysis package 16 to send messages to a remote receiver when triggered by electronic signals corresponding to anticipated acoustic signals from such a transmitter. The system can feature a global position system 24 (GPS) to determine the location of the buoy. The buoy can be programmed to identify specific acoustic signals remotely through a modem or locally through a control port. In use multiple buoys can be spaced apart according to the depth and acoustic transmissivity of the water. Three of the devices can be used to give an accurate location of the transmissions, which can be the pings from a downed aircrafts black box or people banging on the hull or fuselage of a submerged vessel or aircraft.
Detection system for underwater signals
2015-11-11
Patent
Electronic Resource
English
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