A hydroacoustic impact scoring system

The Naval Torpedo Station is researching means of scoring ordnance impacts using hydroacoustics. HISS is a system of bottom-mounted hydrophones, detectors, and computer designed to read the location of impacts from the associated acoustic transients. A range of this type is being proposed for installation in Puget Sound. Advantages of this method include remote readout, simplified operation, relative immunity to damage, and good data accuracy. The HISS concept is similar to existing 3-D tracking ranges (hyperbolic type), but is designed for the special purpose of impact location and uses off-the-shelf hardware to keep costs down.