| Redundant communications solutions for PORTS® current profiler installations - :14754 | National Ocean Service (NOS)
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Redundant communications solutions for PORTS® current profiler installations
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  • Description:
    "The Center for Operational Oceanographic Products and Services (CO-OPS) is committed to providing products and services that support safe and efficient marine transportation, sound environmental management, and effective emergency planning. Numerous CO-OPS products are part of the Physical Oceanographic Real-Time System (PORTS®). The PORTS® network contains a suite of instruments that measure and disseminate observations of environmental and meteorological parameters and has become a major decision support tool that integrates real-time environmental observations, forecasts, and other geospatial information. Reliable data communication paths are critical to maintaining the high quality products that make up the PORTS® network. CO-OPS depends upon telephone lines, line-of-sight (LOS) radios, wireless Internet protocol (IP) and Iridium modems, as well as Geostationary Operational Environmental Satellites (GOES), to transmit data that serve as the backbone of PORTS® products. Most systems use at least one of two or more telemetry methods to ensure that realtime data reach CO-OPS servers. However, most acoustic current profilers within the PORTS® system do not have a redundant communication path because the message sizes are both large and frequent (transmitted every six minutes). Of the 38 acoustic current profilers that CO-OPS maintains, most contribute to PORTS® data, including the 15 that reside on aids to navigation (ATON) buoys. Although installing redundant communications for all acoustic current profilers is ideal, a more immediate goal is to implement more robust communications on ATON profilers. The Ocean Systems Test and Evaluation Program (OSTEP) has several projects underway, some of which will help to achieve this goal by improving the data communications for both ATON and cabled acoustic current profilers. These projects include integrating the Sutron Xpert 9210B data collection platform (DCP) with Sontek and RDI acoustic current profilers, installing the Xpert DCP in the Nortek ATON profiler electronics box, using Iridium or wireless IP modems on ATON profilers, and developing the DCP Command receiver using the GOES system. These projects and technologies provide multiple options for redundant communications, allowing COOPS to use the technology that best fits the specific need, while maintaining high quality PORTS® products"--Executive Summary.

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