中文摘要：

分析了大气和背景辐射对星地光通信质量的影响，提出了一种新型的多点地面接收方案，用来提高通信质量．进行了原理性演示实验和对大气信道的理论仿真．结果均说明采用该方案来提高星地光通信质量是可行的．

英文摘要：

The effects of atmosphere and background radiation on quality of satellite to earth optical communication are analyzed. A new method, point-to-multipoint,is proposed to improve the communication quality. A demo experiment and numerical simulations of atmosphere channel are executed to explain the feasibility of the method.