SonarPoint whale and boat




We recently developed a system of affordable autonomous recorders called SonarPoint. This system consists of an array of 3-5 recorders that are precisely time-synchronized to allow localization and tracking of marine mammals and other sound sources. This system is a major upgrade to the microMARS recorders that were developed in 2015 with limited resources and funding. This ONR sponsored R&D project has recently been completed with good field test results.  The image below illustrates killer whale tracking off the coast of San Juan Island.killer whale track

There will be two main deployment configurations available for SonarPoint. The first is a drifting system that relies on GPS and local RF modem (for short ranges) or an ARGOS transmitter (for long range/duration deployments) integrated in an electronics package located inside a surface GPS / repeater. This unit is attached via an electronics cable to the recorder located a depth of several tens to a few hundreds of meters below the surface buoy. This system can be deployed as independent global drifters, an array of drifters (for short term monitoring and tracking), or tethered to a mooring on the seafloor in areas that are relatively shallow (< 100m). The second deployment configuration consists of an array of seafloor recorders that are time synchronized using a precision, temperature-compensated pinger. This system is deployed with small acoustically triggered release devices with each recorder so that they can be retrieved after deployment. These deployment configurations will allow an infinite number of spatial configurations of the array to allow the user as much flexibility as possible. This system has been field tested with marine mammals in the San Juan Islands and Monterey Bay. Contact Desert Star Systems for pricing or Bio-Waves Inc for more information.sonarpoint components

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