N2 - Gas bubbles in the ocean are produced by breaking waves, rainfall, methane seeps, exsolution, and a range of biological processes including decomposition, photosynthesis, respiration and digestion. However one biological process that produces particularly dense clouds of large bubbles, is bubble netting. This is practiced by several species of cetacean. Given their propensity to use acoustics, and the powerful acoustical attenuation and scattering that bubbles can cause, the relationship between sound and bub-ble nets is intriguing. It has been postulated that humpback whales produce ‘walls of sound’ at audio frequencies in their bubble nets, trapping prey. Dolphins, on the other hand, use high frequency acous-tics for echolocation. This begs the question of whether, in producing bubble nets, they are generating echolocation clutter that potentially helps prey avoid detection (as their bubble nets would do with man-made sonar), or whether they have developed sonar techniques to detect prey within such bubble nets and distinguish it from clutter. Possible sonar schemes that could detect targets in bubble clouds are proposed, and shown to work both in the laboratory and at sea. Following this, similar radar schemes are proposed for the detection of buried explosives and catastrophe victims, and successful laboratory tests are undertaken. L1 - http://journals.pan.pl/Content/101460/PDF/04_paper.pdf L2 - http://journals.pan.pl/Content/101460 PY - 2014 IS - No 3 EP - 332 DO - 10.2478/aoa-2014-0037 KW - sonar KW - radar KW - cetacean KW - dolphin KW - whale KW - mines KW - explosives KW - nonlinear KW - wake A1 - Leighton, Timothy A1 - White, Paul PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 39 DA - 2014 T1 - Dolphin-Inspired Target Detection for Sonar and Radar SP - 319 UR - http://journals.pan.pl/dlibra/publication/edition/101460 T2 - Archives of Acoustics