Abstract
Abstract : The purpose of this project was to develop and demonstrate a low cost, easy to operate system for collecting and disseminating coastal ocean data. The system that was developed uses acoustic modems to transfer data from instruments on the seafloor to small surface buoys or existing navigation buoys that are equipped with acoustic receivers and RF links. Data received by the buoy's acoustic receiver are forwarded via the RF link to a station on shore. The shore station transfers the received data via landline to WHOl where it is automatically placed on a project website that is accessible to all. Key elements in this system include: 1) low cost acoustic transmitters that are deployed with each instrument, 2) small, easy to deploy surface buoys that carry the acoustic receivers and RF links, 3) a network architecture that allows a single surface buoy to receive data from a number of subsurface instruments, and 4) a back channel to the surface buoys from the laboratory at WHOl so that the acoustic receivers can be modified without requiring a visit to the site.
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