B. Park, C. Lim, J. Wang, and Y. T. J. Morton. Horizontal Drift Velocity and Dimensions of Ionospheric Irregularities Using ROT From a GNSS Receiver Array. IEEE Transactions on Geoscience and Remote Sensing, volume 60, 2022 . J. Wang and Y. J. Morton. A Hybrid Correlation Model for the Spaced-Receiver Technique. Radio Science, volume 54, issue 3, 2019 . J. Wang, Y. J. Morton, and D. Hampton. New results on ionospheric irregularity drift velocity estimation using multi-GNSS spaced-receiver array during high-latitude phase scintillation. Radio Science, American Geophysical Union, volume 53, 2018 . J. Wang and Y. T. Morton. A comparative study of ionospheric irregularity drift velocity derived from a GNSS receiver array and Poker Flat Incoherent Scatter Radar measurements during high-latitude ionospheric scintillation. J. Geophys. Res. Space Physics, American Geophysical Union, volume 122, pages 6858-6881, 2017 .