01766nas a2200217   4500008004100000022001400041245005800055210005800113260001600171300001600187490000800203520113400211100002001345700002001365700001801385700002101403700003301424700002001457700002001477856005101497       2018                        eng d  a0001-496600aSource localization using a compact tetrahedral array0 aSource localization using a compact tetrahedral array  cJan-09-2018  a1745 - 17450 v1443 a<p>We localized sound sources collected on a compact tetrahedral hydrophone array in a continental shelf environment south of Block Island, Rhode Island. The tetrahedral array of phones, 0.5 m on a side, was deployed to monitor the underwater sound of construction and operation of the first offshore wind farm in the United States. Signals from shipping and marine mammals, including fin whales, humpback whales, and right whales, were detected on the array. Directions of arrival (DOAs) for a number of signals were computed using a time difference of arrival technique. Given the DOAs, ranges were estimated using supervised machine learning techniques outlined by Niu et al. (JASA, 2017). The approach was tested using simulated data from Kraken assuming environmental information consistent with this continental shelf environment. Performance on signals from individual ships and marine mammals is presented. Ship localizations are compared to Automated Identification System (AIS) fixes. An error analysis is also presented. [Work supported by the Office of Naval Research and the Bureau of Ocean Energy Management.]</p>
1 aPotty, Gopu, R.1 aTripathy, Aditi1 aTazawa, Makio1 aAmaral, Jennifer1 aVigness-Raposa, Kathleen, J.1 aLin, Ying-Tsong1 aNewhall, Arthur  uhttp://asa.scitation.org/doi/10.1121/1.5067739