Abstract
Ground Based Augmentation System (GBAS) can strongly support aircraft’s precise approach and landing, and integrity monitoring is not only the difficulty of the system realization but also the key point to safeguard the flight. The ionosphere grads is the uppermost element that influence the GBAS integrity. Several algorithms are used together to achieve the ionosphere grads monitoring and ensure the ionosphere grads in an acceptable limit, ultimately guarantee GBAS integrity. In this paper, the theory basis of the ionosphere grads monitoring algorithm is analyzed firstly, then an improved algorithm is proposed, which can increase ionosphere grads monitoring sensitivity effectively. The comparable experimental analysis of present and improved algorithm is given; the results show that multi-monitoring algorithm can monitor ionosphere grads from different aspects, while the improved algorithm can increase monitoring effect apparently.
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Acknowledgments
This paper received both software and hardware supports from the project team who were working on the subproject “GNSS Multibeam Monitoring Receive System for Airport” (2011BAH24B04) of “the Demonstration Project of Integrated Application of Air Traffic Control Technologies by Air Traffic Controller in Collaboration with Civil Aviation Authority in China”, which is funded by the MOST as per the National Key Technology Support Program of the 12th China National Five-Year Plan. Here, the author would like to express the great appreciation.
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Xing, Z., Zhao, J., Wang, Z., Zhi, C. (2015). Analysis and Improvement to Ionosphere Grads Integrity Monitoring Algorithm in Ground Based Augmentation System. In: Sun, J., Liu, J., Fan, S., Lu, X. (eds) China Satellite Navigation Conference (CSNC) 2015 Proceedings: Volume II. Lecture Notes in Electrical Engineering, vol 341. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46635-3_19
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DOI: https://doi.org/10.1007/978-3-662-46635-3_19
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