Testing JPL's PPP Service |
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Authors: | Boon Witchayangkoon Paulo C L Segantine |
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Institution: | (1) Department of Spatial Information Engineering, University of Maine, 5711 Boardman Hall, Orono, ME 04469-5711, US |
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Abstract: | The Jet Propulsion Laboratory's (JPL's) automated GPS data analysis service, which is available via the Internet, has been
tested. This service is attractive not only because data submission and retrieval are entirely automated on the Internet,
but also because it makes centimeter positioning possible for individual dual-frequency receivers. To learn more about this
service, the repeatability of position solutions were investigated by means of two simple experiments. The positions of a
continuously operating reference station have been computed repeatedly for observation times ranging from 1 hour to 24 hours.
In addition, short baseline repeatability and accuracy were tested. Centimeter-level results were obtained. The difference
in the vertical definition of the electronic center for antennas of different types could readily be identified. The JPL service
is easy to use, even in its present form (which one might label version 1.0). ? 1999 John Wiley & Sons, Inc. |
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