TY - JOUR AU - Ebbeson, Gordon R. AU - Desharnais, Francine PY - 2006/09/01 Y2 - 2024/03/28 TI - Localization of right whales using matched correlation processing JF - Canadian Acoustics JA - Canadian Acoustics VL - 34 IS - 3 SE - Proceedings of the Acoustics Week in Canada DO - UR - https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1826 SP - 70-71 AB - The use of Matched Correlation Processing (MCP) for the localization of right whales was demonstrated. Model-based MCP techniques have been researched with the goal of improving the capability of passive sonar systems for localizing quiet underwater sources. The cross-correlations for a broadband source as measured with a pair of hydrophones in a horizontal array are matched with those generated with a correlation model for many candidate ranges and depth along a candidate bearing. These matches are carried out with a number of hydrophone pairs to form many range-depth ambiguity surfaces. A three-sensor horizontal array with an aperture of 125 m was deployed on the sea bottom in 68 m of water and the hydrophones were localized using an Array Element Localization (AEL) procedure. A light bulb was imploded at a depth of 41.5 m from hydrophone. Using light bulbs as simulated right whale gunshots, the technique was shown to work extremely well out to a range of about six water depths in an environment that has sufficient bottom reflections. ER -