Abstract
Ionospheric delay variogram is essential for Kriging based Space-Based Augmentation System (SBAS) ionospheric grid model. Variogram realizations are compared for various solar activity conditions and different latitudes for China and around areas. It shows that the ionospheric anomaly in low-latitude areas impacts the variogram seriously, causing a larger intercept at zero distance and a “bump” at the distance of about 1000 km. An alternative method is proposed for variogram modeling for China areas and parameters are given for variograms under different solar conditions. A variogram with fixed constants is further proposed for practical use in SBAS, and the parameters are given also.
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Liu, D., Yu, X., Chen, L., Zhen, W. (2017). Analysis on Ionospheric Delay Variogram Modeling in China. In: Sun, J., Liu, J., Yang, Y., Fan, S., Yu, W. (eds) China Satellite Navigation Conference (CSNC) 2017 Proceedings: Volume II. CSNC 2017. Lecture Notes in Electrical Engineering, vol 438. Springer, Singapore. https://doi.org/10.1007/978-981-10-4591-2_10
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DOI: https://doi.org/10.1007/978-981-10-4591-2_10
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