United States Department of Transportation
i
High Order GPS Base Station Support for Rhode Island
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2001-09-01
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[PDF-46.84 KB]
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TRIS Online Accession Number:00969949
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Abstract:The University of Rhode Island (URI) upgraded its Global Positioning System (GPS) Base Station to provide round-the-clock Internet access to survey-grade (+/- 2 cm accuracy) reference files using a web-based data distribution system. In August 2000, URI participated in the National Geodetic Survey/RI Department of Transportation GPS survey campaign to enhance the Federal Base Network (FBN) component of the National Spatial Reference System (NSRS) in the United States. During this effort, the URI Base Station served as one of two Central Temporary Continuously Operating Reference Stations (CTCORS) in the State. The result will be a high-accuracy regional densification of the FBN with a goal of 2 cm horizontal and vertical accuracy at 16 control points in RI. This, in conjunction with the TC-funded Base Station upgrade, will significantly enhance the ease, speed, and accuracy of high-precision GPS-based surveys in the region. In June of 2001, URI became part of the NGS Cooperative Continuously Operating Reference Station (CCORS) Network of National High Accuracy GPS base stations. In June 2000, the base station coordinates were readjusted by NGS Cooperative CORS geodesists using precise orbit data. Data are now available for station URIL 24/7 at http://edc.uri,edu/gps or http://www.ngs.noaa.gov/CORS/Coop/. Using nearby CORS sites, surveyors and scientists can now conduct single-receiver surveys eliminating the need to allocate additional personnel and receivers to occupy control points. (11 P.)
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