1. School of Physics and Electronic Sciences; Changsha University of Science and Technology; Changsha China
2. School of Physics and Astronomy; University of Minnesota, Twin Cities; Minneapolis Minnesota USA
3. Laboratory for Atmospheric and Space Physics; University of Colorado Boulder; Boulder Colorado USA
4. Institute for the Study of Earth, Oceans, and Space; University of New Hampshire; Durham New Hampshire USA
5. Space Science and Applications Group; Los Alamos National Laboratory; Los Alamos New Mexico USA
6. ISR Division; Los Alamos National Laboratory; Los Alamos New Mexico USA