Air-Path Acoustic Tracking System,
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD
Pagination or Media Count:
A two-dimensional acoustic tracking system has been developed and installed in the Maneuvering and Seakeeping MASK Facility at DTNSRDC. The system consists of an acoustic pinger in the vehicle being tracked, eight microphones positioned around the basin and a shoreborne microprocessor. In operation, the acoustic pinger in the vehicle is monitored by the eight microphones and the arrival time of the pulses are fed into the microprocessor. The microprocessor computes the travel time of the pulses, uses the times combined with known frequency propagation characteristics, microphone positions and test facility geometry to determine the position of the vehicle. The X and Y coordinates of the vehicle location can be recorded along with other model data on a digital computer andor plotted in real time on an X-Y plotter.