Influence of Diverse Biases on Network RTK

H.-J. Euler, S. Seeger, F. Takac

Abstract:	The current network RTK messages proposal, the so called Master-Auxiliary concept, has been outlined in a number of publications (Euler et al., 2001 and Zebhauser et al., 2002). The messages describe the dispersive and non-dispersive errors for a network of reference stations. This information is normally interpolated for the rover’s position and applied to reduce the observation errors and improve positioning performance. Euler et al. (2004) demonstrates the benefits of network RTK corrections in terms of positioning reliability, robustness and accuracy. The data used for the investigation was collected under fair atmospheric conditions. This paper concentrates on data collected during the severe ionospheric conditions recorded in October 2003. The advantage of network RTK information is measured in terms of the percentage of correctly fixed ambiguities. The Master-Auxiliary concept, as with other network RTK methods, relies on the correct resolution of the integer ambiguities between the reference stations to model the dispersive and non-dispersive network errors. This paper also investigates the influence of incorrectly fixed reference station ambiguities on interpolated network RTK information. Two approximation surfaces are investigated: a linear plane and higher order surface represented by a quadratic function.
Published in:	Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004) September 21 - 24, 2004 Long Beach Convention Center Long Beach, CA
Pages:	2822 - 2830
Cite this article:	Euler, H.-J., Seeger, S., Takac, F., "Influence of Diverse Biases on Network RTK," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 2822-2830.
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