Researchers have developed an underwater acoustic system locate marine mammals, underwater vehicles and other sound sources in the ocean, using no more than a single hydrophone (basically an underwater microphone) as a receiver.

Understanding the oceans is essential to the future of our planet. Acoustic wireless information transmission through the oceans is one of the technologies enabling the development of future ocean-observation systems, a stepping stone towards gaining a better perception of so many pivotal issues to which the oceans may hold the key.

This new research is developing a simpler, more efficient and less costly system for locating sound sources in the sea.

As conventional localisation techniques such as those used in GPS-like systems cannot be directly ported to an underwater scenario. The new system relies on information about the variation of submarine topography, of the depths and shapes of underwater terrain – the bathymetry. The result, after the calculations have been cleared of residual noise, offers a close estimate of the trajectory of the source of sound under examination.

The researchers are from IMDEA Networks in Spain in collaboration with Israel’s University of Haifa.


Please enter your comment!
Please enter your name here