A traditional narrow-band system's ambiguous imagery (top) as compared to a higher-resolution broadband image (bottom) that shows individual fish
The setup that was used for testing the fish-detecting low-frequency system
The setup that was used for testing the zooplankton-detecting high-frequency system
WHOI's high-frequency broadband acoustic system being deployed
WHOI's low-frequency broadband acoustic system being deployed
The graphed acoustic spectrum from the high-frequency system illustrates the difference between turbulence and zooplankton
It will be like going from black-and-white television to high definition color TV - that’s how researchers at America’s Woods Hole Oceanographic Institution (WHOI) have envisioned an upcoming leap forward in undersea acoustic imaging. Tim Stanton and Andone Lavery have developed and tested two broadband acoustic systems that leave conventional single-frequency systems eating their dust... or water droplets, or whatever. Developed over 20 years, the new technology could revolutionize oceanography, and also has huge commercial and military potential.
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