Diver Communication and Localization System using Underwater Acoustics

Abstract

Diving operations are still predominant today in many underwater applications despite the advances in robot-assisted technologies. Apart from being invaluable in carrying out many complex tasks underwater, diving is also a popular form of recreational activity. To improve diver safety and enable new scenarios under which divers can operate, a robust and reliable communication and localization system is extremely useful. Communicating from the surface to divers, and between divers themselves, is a challenge. Currently, most commercial diving operations rely on rudimentary communication using hand signals and floats among the divers. In order to communicate with the topside application (e.g. topside manager) of the dive operation from the surface, tethered systems are used. Dive logs including the depth, pressure, etc., are measured using dive computers but to monitor these parameters and track the divers in real-time on the surface, is a challenge. This can be resolved using the advances made in underwater acoustic communications. There is a strong need for a system capable of logging basic diver statistics and providing real-time feedback of the location and condition of the divers, to enhance the safety and effectiveness of dive operations. A diver communication and localization solution that allows two-way communication between the topside application and the divers with simultaneous localization of the divers is designed, implemented, and demonstrated. The proposed system allows the topside manager to monitor real-time dive parameters including diver's depth, location, and tank pressure.