Journal article

A 4D tomographic ionospheric model to support PPP-RTK

G Olivares-Pulido, M Terkildsen, K Arsov, PJG Teunissen, A Khodabandeh, V Janssen

Journal of Geodesy | Springer | Published : 2019

Abstract

Successful implementation of integer ambiguity resolution enabled precise point positioning (aka PPP-RTK) algorithms is inextricably linked to the ability of a user to perform near real-time positioning by quickly and reliably resolving the integer carrier-phase ambiguities. In the PPP-RTK technique, a major barrier to successful ambiguity resolution is the unmodelled impact of the ionosphere. We present a 4D ionospheric tomographic model that computes in real time the ionospheric electron density as a linear combination of basis functions, namely B-splines. The results show that when the ionospheric estimates are provided as atmospheric corrections for a PPP-RTK end-user, the time to fix it..

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University of Melbourne Researchers

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Funding Acknowledgements

This work has been supported by the Cooperative Research Centre for Spatial Information, whose activities are funded by the Business Cooperative Research Centres Programme.