Validating Ionospheric Scintillation Indices Extracted from 30s-Sampling-Interval GNSS Geodetic Receivers with Long-Term Ground and In-Situ Observations in High-Latitude Regions. - Dongsheng Zhao; Qianxin Wang; Wang Li 004; Shuangshuang Shi; Yiming Quan; Craig M. Hancock; Gethin Wyn Roberts; Kefei Zhang; Yu Chen; Xin Liu; Zemin Hao; Shuanglei Cui; et al. (Remote. Sens., 2022)