Acoustic distance measuring method and apparatus
Acoustic-optic sound velocity profiler
Acousto-optic weapon location system and method
Acousto-optic weapon location system and method
Alarms between stations with relative motion
Apparatus and method for calibrating an acoustic detection...
Apparatus for measuring the length of pipe and other hollow memb
Apparatus for monitoring surroundings of vehicle and sensor...
Autonomous hydrophone position locating and target tracking...