**Author details**

Tao Dong1,2\*, Yue Xu1,2 and Jingwen He1,2

1 State Key Laboratory of Space-Ground Integrated Information Technology, Beijing, China

2 Beijing Institute of Satellite Information Engineering, Beijing, China

\*Address all correspondence to: dongtaoandy@163.com

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
