Dynamic Positioning at Sea Using the Global Positioning System.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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Dynamic positioning of a moving platform is analyzed data from the Global Positioning System GPS acquired in Phase II of the Seafloor Benchmark Experiment on RV Point Sur in August 1986. GPS position determinations are compared to simultaneous Mini-Ranger fixes. The GPS positions computed using only broadcast ephemeris data were within 20 m from the Mini-Ranger fixes when data from four satellites were used and within 30 m when data from three satellites and a geoidal height constraint were used. It was found that the position accuracy is degraded when data from a satellite reaching culmination is used.
- Underwater and Marine Navigation and Guidance