Social and Behavioral Sciences Commons^™

47-Channel Burst-Mode Recording Hydrophone System Enabling Measurements Of The Dynamic Echolocation Behavior Of Free-Swimming Dolphins, Josefin Starkhammar, Mats Amundin, Johan Nilsson, Stan A. Kuczaj, Monica Almqvist, Hans W. Persson

Faculty Publications

Detailed echolocation behavior studies on free-swimming dolphins require a measurement system that incorporates multiple hydrophones (often > 16). However, the high data flow rate of previous systems has limited their usefulness since only minute long recordings have been manageable. To address this problem, this report describes a 47-channel burst-mode recording hydrophone system that enables highly resolved full beamwidth measurements on multiple free-swimming dolphins during prolonged recording periods. The system facilitates a wide range of biosonar studies since it eliminates the need to restrict the movement of animals in order to study the fine details of their sonar beams. (C) 2009 Acoustical …