1. School of Physics and Electronic Sciences; Changsha University of Science and Technology; Changsha China
2. Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
3. Institute for the Study of Earth, Oceans, and Space; University of New Hampshire; Durham New Hampshire USA
4. Space Science and Applications Group; Los Alamos National Laboratory; Los Alamos New Mexico USA
5. ISR Division; Los Alamos National Laboratory; Los Alamos New Mexico USA
6. The Aerospace Corporation; Los Angeles California USA
7. Laboratory for Atmospheric and Space Physics; University of Colorado Boulder; Colorado USA
8. School of Physics and Astronomy; University of Minnesota; Minneapolis Minnesota USA