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Improving the Reliability of Underwater Communication
by
Dr. Rudolf Bannasch | 09.22.2009
In some underwater applications, umbilical cords are no longer suitable as they provide only a limited range of operation, are difficult to handle, produce hydrodynamic drag and, due to the danger of entanglement, increase the risk of accidents when heavy deep-sea robots operate in close proximity to sensitive stationary installations. Telemetry or wireless communication is the obvious choice, but radio does not work under water. As alternative, acoustic signals are prone to disruptions and sometimes complete failure. This highlights some of the major challenges with submarine information and communications technology (ICT).
Under good conditions currently available acoustic modems can perform their role satisfactorily. 
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