title: 47-channel burst-mode recording hydrophone system enabling measurements of the dynamic echolocation behavior of free-swimming dolphins.
abstract: 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.
authors.affiliation: Electrical Measurements, Faculty of Engineering LTH, Lund University, Lund, Sweden. josefin.starkhammar@elmat.lth.se
authors.forename: Josefin
authors.initials: J
authors.lastname: Starkhammar
authors.forename: Mats
authors.initials: M
authors.lastname: Amundin
authors.forename: Johan
authors.initials: J
authors.lastname: Nilsson
authors.forename: Tomas
authors.initials: T
authors.lastname: Jansson
authors.forename: Stan A
authors.initials: SA
authors.lastname: Kuczaj
authors.forename: Monica
authors.initials: M
authors.lastname: Almqvist
authors.forename: Hans W
authors.initials: HW
authors.lastname: Persson
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D000818:Animals; D001522:Behavior, Animal; D050681:Bottle-Nosed Dolphin / Q000502:physiology*; D004455:Echolocation; D004581:Electronics / Q000295:instrumentation*; D005106:Exploratory Behavior; D013550:Swimming; D013997:Time Factors