Print Email Facebook Twitter Impact and mitigation of neglecting PPP-RTK correctional uncertainty Title Impact and mitigation of neglecting PPP-RTK correctional uncertainty Author Psychas, D.V. (TU Delft Mathematical Geodesy and Positioning) Khodabandeh, Amir (University of Melbourne) Teunissen, P.J.G. (TU Delft Mathematical Geodesy and Positioning; University of Melbourne; Curtin University of Technology) Date 2022 Abstract The corrections needed to realize integer ambiguity resolution-enabled precise point positioning (PPP-RTK) at a single-receiver user are often treated as if they are deterministic quantities. The present contribution aims to study and analyze the effect the neglected uncertainty of these corrections, which are subject to time delay, has on the PPP-RTK user ambiguity resolution and positioning performance. Next to the analyses of the estimation results, we emphasize their quality information and show to what extent the assumed positioning precision that the user is provided with differs from the minimum-variance counterpart under an incorrectly specified user stochastic model. We develop and present two alternatives to the fully populated error variance matrix of the PPP-RTK corrections that the user can reconstruct with limited information from the provider so as to properly weigh his corrected data and achieve close-to-optimal performance for high latencies. Supported by numerical results, our study demonstrates that the alternative variance matrices are sufficient enough for the user to obtain improved instantaneous PPP-RTK performance and a realistic precision description in the positioning domain. Subject Best linear unbiased estimation (BLUE)Global navigation satellite systems (GNSS)Integer ambiguity resolution (IAR)LatencyPPP-RTK correctional uncertaintyPrecision description To reference this document use: http://resolver.tudelft.nl/uuid:2c0b5743-cd38-46b6-8514-9e495f1c1c3d DOI https://doi.org/10.1007/s10291-021-01214-y Embargo date 2022-06-30 ISSN 1080-5370 Source GPS Solutions (online), 26 (1), 1-15 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 D.V. Psychas, Amir Khodabandeh, P.J.G. Teunissen Files PDF Psychas2021_Article_Impac ... lectin.pdf 13.82 MB Close viewer /islandora/object/uuid:2c0b5743-cd38-46b6-8514-9e495f1c1c3d/datastream/OBJ/view