Handheld Sonar Intercept Receiver for Divers

Navy combat swimmers are vulnerable to intentional or unintentional detection by active Sonar while they are conducting their mission in the littoral environment. The Sonar’s that normally operate in the littoral represent the greatest threat to divers as well as smaller size undersea vehicles like the Swimmer Delivery Vehicle (SDV) and Unmanned Underwater Vehicles (UUV). In order for combat swimmers to avoid detection from these threat Sonar’s they must be equipped with an acoustic intercept receiver that operates with a wide enough frequency range to alert them of a potential threat. It is extremely important that the intercept receiver provide the combat swimmer with a bearing to the active source in order to make an informed decision as to the best direction to move in order to avoid detection. The intercept receiver must be packaged with a minimum size and weight footprint with a minimal power requirement. Ideally it should be integrated into a “Swim Board” like configuration with the intercept detection information overlaying the diver navigation information. So that the swimmer does not have to be distracted from his navigation focus to be alerted to the presence of and bearing to an active Sonar.