Abstract: A method of locating an acoustic source using a plurality of vehicles is provided. The method includes transferring acoustic input from a plurality of sensors to a plurality of processing modules, determining a location of each of the vehicles using at least one of a global positioning system module and an inertial motion unit module located in each vehicle, processing, at each processing module, the received acoustic input, designating one of the processing modules a master processing module, and sending processed acoustic input received at each processing module to the master processing module, combining the processed acoustic input at the master processing module, and estimating acoustic source location based on combined processed acoustic data.

Abstract: A method and system for detecting watercraft in shallow waterways. In one example, an underwater detection system includes an underwater power source, an acoustic sensor, a controller coupled to the power source and to the acoustic sensor and configured to detect a watercraft of interest based on acoustic signals generated by the watercraft of interest and received by the acoustic sensor, and a retractable communications system. The retractable communications system is configured to deploy a transmitter to the surface of the shallow water to report detection of a watercraft in the waterway and to retract the transmitter to a safe depth below the surface of the shallow waterway when not actively communicating.