Integrity of the TrimbleĀ® CenterPoint RTX Correction Service

Ulrich Weinbach, Markus Brandl, Xiaoming Chen, Herbert Landau, Fabian Pastor, Nico Reussner, Carlos Rodriguez-Solano

Abstract: In this contribution a new integrity monitoring system for the Trimble CenterPoint RTX Fast positioning service is introduced, that will allow RTX correction data to be used in safety-critical applications. The system monitors the integrity of the RTX correction data by computing carrier phase observation residuals for 20-25 independent monitoring station per RTX Fast service area, currently Europe and North America. Based on these residuals integrity checks are performed both on all newly generated corrections before broadcasting as well as on already broadcast corrections received by the monitoring stations. In case out-of-tolerance corrections are detected, the corrections are flagged as not usable. In addition when the outof-tolerance correction is detected with already broadcast correction data a corresponding alarm flag is sent to the user within seconds. In addition to describing the overall integrity concept and the new integrity monitoring modules, the accuracy of the RTX Fast corrections is assessed and examples of real-life integrity events are discussed.
Published in: Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018)
September 24 - 28, 2018
Hyatt Regency Miami
Miami, Florida
Pages: 1902 - 1909
Cite this article: Weinbach, Ulrich, Brandl, Markus, Chen, Xiaoming, Landau, Herbert, Pastor, Fabian, Reussner, Nico, Rodriguez-Solano, Carlos, "Integrity of the TrimbleĀ® CenterPoint RTX Correction Service," Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018), Miami, Florida, September 2018, pp. 1902-1909. https://doi.org/10.33012/2018.15971
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