Design of a Single-Frequency Filter that Minimizes Ionosphere Divergence Error

Jason Rife and Shiladitya Sen

Abstract:	This paper optimizes a GPS smoothing filter to minimize biases caused by ionosphere divergence during anomalous storms. Ionospheric storms represent the most severe threat to high-integrity differential GPS systems, such as Ground-Based Augmentation Systems (GBAS). Substituting the optimized filter for the Hatch Filter typically used in GBAS reduces ionosphere divergence bias by over 10% for a fixed level of noise attenuation.
Published in:	Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX
Pages:	368 - 378
Cite this article:	Rife, Jason, Sen, Shiladitya, "Design of a Single-Frequency Filter that Minimizes Ionosphere Divergence Error," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 368-378.
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