Navstar GPS (Global Positioning System) Accuracy While Surveying Arrays of Deep Ocean Transponders

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Abstract:

This paper presents the observed accuracy of the Navstar GPS Global Positioning System when used with acoustic data to geodetically locate arrays of bottom-mounted ocean transponders. Two arrays were to be located, and each was surveyed on several separate occasions. In addition to GPS with dual frequency precise P-code, the arrays were located by using Argo, Syledis, Transit satellites, and by several other tracking methods. Because the array positions have been well determined, the data is now able to reveal the absolute GPS fix error while at sea. For one survey, ground truth information from the Yuma GPS facility, 263 nautical miles 487 km away, was used to reduce measurement bias. Keywords Deep ocean transponders Hydrophone survey.

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