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Kinematic GPS solutions for aircraft trajectories: Identifying and minimizing systematic height errors associated with atmospheric propagation delays
School of Earth Sciences, Ohio State University, Columbus, Ohio, USA
School of Earth Sciences, Ohio State University, Columbus, Ohio, USA
School of Earth Sciences, Ohio State University, Columbus, Ohio, USA
National Geodetic Survey, NOAA, Silver Spring, Maryland, USA
School of Earth Sciences, Ohio State University, Columbus, Ohio, USA
U.S. Geological Survey, Pasadena, California, USA
National Center for Airborne Laser Mapping, University of Florida, Gainesville, Florida, USA
UNAVCO Inc., Boulder, Colorado, USA
When kinematic GPS processing software is used to estimate the trajectory of an aircraft, unless the delays imposed on the GPS signals by the atmosphere are either estimated or calibrated via external observations, then vertical height errors of decimeters can occur. This problem is clearly manifested when the aircraft is positioned against multiple base stations in areas of pronounced topography because the aircraft height solutions obtained using different base stations will tend to be mutually offset, or biased, in proportion to the elevation differences between the base stations. When performing kinematic surveys in areas with significant topography it should be standard procedure to use multiple base stations, and to separate them vertically to the maximum extent possible, since it will then be much easier to detect mis-modeling of the atmosphere.
Received 14 June 2007; accepted 18 October 2007; published 16 November 2007.
Citation: (2007), Kinematic GPS solutions for aircraft trajectories: Identifying and minimizing systematic height errors associated with atmospheric propagation delays, Geophys. Res. Lett., 34, L23S07, doi:10.1029/2007GL030889.
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