Corresponding Author: Hua Tang, the corresponding author, email:huatang@buaa.edu.cn, Doctor of Science, South China Normal University, Kyoto University postdoctoral. Mainly engaged in the research of Free Space Optical Communication and quantum optics, including high power laser transmission, atmospheric optical transmission, such as quantum coherence and interference.;Wei Xu, email: conan488@126.com. received his M.S. degree in School of Electronics and Information Engineering, Beihang University. His research interests include laser propagation in the free space.;Guohua Wu, email: wuguohua@bupt.edu.cn.Doctor of Science, Shanghai Institute of Optics & Fine Mechanics, CAS, Mainly engaged in the research of Free Space optical communication and Ghost imaging.