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An autonomous scientific echosounder for the measurement and monitoring of environmental
conditions in oceans, lakes and rivers. Abundance of zooplankton, fish, bubbles and
suspended sediments in the water column are common targets, via the measurement of
acoustic backscatter returns at multiple ultrasonic frequencies. Using onboard data
storage, the AZFP can collect data continuously for periods of up to one year at high
temporal and spatial resolution. The AZFP is available with up to four frequencies
in a single transducer housing. It can be operated in bottom-mounted, upward looking
mode or in downward looking mode from a buoy, and is ideally suited for taut-line
mooring operation. It has a configurable ping rate up to 1 Hz, 16 Gb Compact Flash
storage with up to 32 Gb available, and weighs 50 kg in its ruggedised shipping case.
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