Abstract
The Global Positioning System (GPS) is a revolutionary satellite positioning technology that provides surveyors and geodesists with high accuracy 3-dimensional positional information. Although still in its pre-operational phase, GPS has been used from the early 1980’s to derive (relative) coordinates with accuracies ranging from several parts in 106 (so-called “surveying” accuracies) to several parts in 108 (“geodetic” accuracies), as expressed in terms of the GPS receiver separation distance. Although accuracies have generally been expressed as a linear function of baseline length, the accuracies of the coordinate components are different for horizontal and vertical (or height) components by virtue of:
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1.
they are influenced by different error sources,
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the error sources propagate into the various coordinate components in different ways, and
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3.
the satellite and ground receiver geometry has a different influence on the horizontal components, as opposed to the vertical component.
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Rizos, C., Grant, D.B., Holloway, R.D. (1990). GPS Vertical Surveying: A Discussion of Some Special Considerations. In: Bock, Y., Leppard, N. (eds) Global Positioning System: An Overview. International Association of Geodesy Symposia, vol 102. Springer, New York, NY. https://doi.org/10.1007/978-1-4615-7111-7_26
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DOI: https://doi.org/10.1007/978-1-4615-7111-7_26
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