Abstract
An autonomous passive acoustic recording unit (ARU) was developed through a collaboration between the Boston University Department of Mechanical Engineering and the NOAA Northeast Fisheries Science Center. The ARU consists of two main sections, an electronic data logger and a mechanical pressure case and release. The datalogger makes use of widely adopted commercial hardware such as SD card memory and USB connectivity. In addition, WAV file formats and open-source compiler software allow flexibility and programmability at minimal expense. The pressure case was designed for shallow water (100 m) applications with few machined parts and several “off the shelf” parts. The overall system can be constructed at a minimal cost and has been successfully tested during both laboratory and at-sea trials.
Published Version
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