Assessment of the impact of FORMOSAT-7/COSMIC-2 GNSS RO observations on mid- and low-latitude ionosphere specification: Observing system simulation experiments using ensemble square root filter - C.-T. Hsu, T. Matsuo, X. Yue, T.-W. Fang, T. Fuller-Rowell, K. Ide, J.-Y. Liu (Wiley-Blackwell, 2018)
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