First Ionospheric Radio-Occultation Measurements From GNSS Occultation Sounder on the Chinese Feng-Yun 3C Satellite. - Tian Mao; Lingfeng Sun; Guanglin Yang; Xinan Yue; Tao Yu; Cong Huang; Zhongchao Zeng; Yungang Wang; Jingsong Wang (IEEE Trans. Geosci. Remote. Sens., 2016)