1. School of Geophysics and Information Technology, China University of Geosciences, Beijing, People’s Republic of China
2. Research Laboratory of Electromagnetic Detection Technology, Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang, People’s Republic of China
3. Information Periodicals Department, China Aero Geophysics Survey & Remote Sensing Center for Land and Resources, Beijing, People’s Republic of China