Network Approach to Precise GPS Navigation

Pawel Wielgosz, Dorota Grejner-Brzezinska, and Israel Kashani

Peer Reviewed

Abstract: The success of precise kinematic GPS positioning over long baselines depends on the ability to resolve the integer phase ambiguities, a challenging task, especially when an instantaneous real-time kinematic (RTK) solution is required. This paper presents test results obtained with a beta version of the Multi Purpose GPS processing software (MPGPS™) developed at the Ohio State University. The primary positioning module tested was the instantaneous (epoch-by-epoch) RTK using multiple reference stations. The results were obtained using instantaneous ambiguity resolution in the postprocessing mode, while the target implementation is the actual RTK. The distances from the reference stations to the rover varied from 30 to 37 km. The resulting network-derived coordinates were compared with the coordinates obtained from single-baseline solutions to test the repeatability, robustness, and accuracy of the network solution. In addition, preliminary results based on an instantaneous network solution with a station spacing of 100–200 km are presented.
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 51, Number 3
Pages: 213 - 220
Cite this article: Wielgosz, Pawel, Grejner-Brzezinska, Dorota, Kashani, Israel, "Network Approach to Precise GPS Navigation", NAVIGATION, Journal of The Institute of Navigation, Vol. 51, No. 3, Fall 2004, pp. 213-220.
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