Study on the Characteristics of the GNSS Bias in Middle and Low Latitude Ionosphere TEC Calculating
Xia Chunliang1, Tao Yu1, Xiaomin Zuo2, Tian Mao3 and Biqiang Zhao4, (1)China University of Geosciences Wuhan, Wuhan, China, (2)China University of Geosciences, Wuhan, China, (3)CAS Chinese Academy of Sciences, Beijng, China, (4)University of the Chinese Academy of Sciences, Beijing, China