Dolphin-inspired compact sonar for enhanced underwater acoustic imaging

Credit: National University of Singapore

(From right) Researchers from the Acoustic Research Laboratory at the NUS Tropical Marine Science Institute Dr Hari Vishnu, Associate Professor Mandar Chitre, and Mr Abel Ho, are part of the team behind the development of the compact sonar.

« Dolphin-inspired compact sonar for enhanced underwater acoustic imaging

Credit: National University of Singapore

Research team member Dr Matthias Hoffmann-Kuhnt from the Acoustic Research Laboratory at the NUS Tropical Marine Science Institute examining images of the compact sonar in operation underwater.

« Dolphin-inspired compact sonar for enhanced underwater acoustic imaging

Credit: National University of Singapore

The compact sonar comprises three sound transmitters which emit sharp, impulsive click sounds similar to a dolphin’s echolocation.

« Dolphin-inspired compact sonar for enhanced underwater acoustic imaging

Credit: National University of Singapore

Sparsity-aware processing produces clearer biomimetic-sonar data visualisations (images e and f) than those produced via conventional image processing methods (images c and d). The original objects can be seen in a and b.

« Dolphin-inspired compact sonar for enhanced underwater acoustic imaging

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