Abstract
Recent progress for high-precision positioning mainly focused on PPP-RTK, which is a precise point positioning (PPP) technique based on a real-time kinematic (RTK) network. PPP-RTK is expected to become the mainstream positioning solution for various intelligent transportation systems (ITS) such as autonomous driving, unmanned aerial vehicles, and urban air mobility. Prior studies on PPP-RTK mainly focused on improving navigation accuracy. However, for safety-critical applications, integrity is also an important performance index. Since PPP-RTK is usually implemented using a Kalman filter (KF), the well-known integrity monitoring schemes developed for least-squares-based systems cannot be directly applied to PPP-RTK. After considering the time-sequential nature of KF, we propose a user-end integrity monitoring scheme of PPP-RTK based on multiple hypothesis solution separation (MHSS) to offer high-reliability and high-precision position solutions with real-time integrity information. The proposed scheme includes two key functions: real-time fault detection and rigorous protection level (PL) evaluation. This scheme captures both the faults from PPP-RTK service products and those faults introduced at the user end. Experiments are carried out with real data and simulated fault scenarios. The results suggest the effectiveness of the proposed scheme and indicate that multi-constellation PPP-RTK can offer position solutions with decimeter-level PLs (integrity risk: 10–7/h) in open-sky areas.
This work was supported by the National Natural Science Foundation of China (62173227, 62103274).
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References
Zhu, N., Marais, J., Betaille, D., et al.: GNSS position integrity in urban environments: a review of literature. IEEE Trans. Intell. Transp. Syst. 19(9), 2762–2778 (2018)
Brown, R.G.: A baseline GPS RAIM scheme and a note on the equivalence of three RAIM methods. Navigation 39(3), 301–316 (1992)
Blanch, J., et al.: Baseline advanced RAIM user algorithm and possible improvements. IEEE Trans. Aerosp. Electron. Syst. 51(1), 713–732 (2015)
Odolinski, R., Teunissen, P.J.G.: Low-cost, high-precision, single-frequency GPS–BDS RTK positioning. GPS Solut. 21(3), 1315–1330 (2017)
Zhao, Q., Guo, J., et al.: A variant of raw observation approach for BDS/GNSS precise point positioning with fast integer ambiguity resolution. Satellite Navigat. 2(1), 20 (2021)
Teunissen, P.J.G., Khodabandeh, A.: Review and principles of PPP-RTK methods. J. Geodesy 89(3), 217–240 (2015)
Tanil, C., Khanafseh, S., Joerger, M., et al.: Optimal INS/GNSS coupling for autonomous car positioning integrity. In: Proceedings of the 32nd International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2019), pp. 3123–3140 (2019)
Wang, S., Zhan, X., Zhai, Y., et al.: Ensuring high navigation integrity for urban air mobility using tightly coupled GNSS/INS system. J. Aeronaut. Astronaut. Aviat. 52(4), 429–442 (2020)
Gunning, K., Blanch, J., Walter, T., et al.: Design and evaluation of integrity algorithms for PPP in kinematic applications. In: Proceedings of the 31st International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2018), pp. 1910–1939 (2018)
Rodriguez-Solano, C., et al.: Protection level of the trimble RTX positioning engine for autonomous applications. In: Proceedings of the 34th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2021), pp. 1577–1595 (2018)
Zhou, F.: Theory and methodology of multi-GNSS undifferenced and uncombined precise point positioning. Ph.D. Thesis, East China Normal University (2018)
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Wang, S., Zhan, X., Xiao, Y., Zhai, Y. (2022). Integrity Monitoring of PPP-RTK Based on Multiple Hypothesis Solution Separation. In: Yang, C., Xie, J. (eds) China Satellite Navigation Conference (CSNC 2022) Proceedings. CSNC 2022. Lecture Notes in Electrical Engineering, vol 909. Springer, Singapore. https://doi.org/10.1007/978-981-19-2580-1_27
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DOI: https://doi.org/10.1007/978-981-19-2580-1_27
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