Acoustic distance measuring apparatus and method of use
Acoustic navigation and diving information system and method
Acoustic positioning system
Acoustic under sea position measurement system
Digital sonar system
Diver locator system
High resolution acoustic navigation system
Long baseline tracking system
Method and apparatus for verifying the location of a seismic bot
Navigation system and method for determining the position of a r
Object position and condition detection system
Position and velocity measuring system
Radio telemetry buoy for long-range communication
Safety alert and locating system
System and method for navigation using two-way ultrasonic...
System, apparatus, and method for geographic positioning of mari
Underwater acoustic data acquisition system