星地光通信的天气可用性与地面站选址研究  

Satellite-to-ground optical communication's usability with different weathers and ground station location

作　　者：姜晓峰[1] 赵尚弘[1] 李勇军[1] 王翔[1] 李瑞欣[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《应用光学》2012年第2期433-436,共4页Journal of Applied Optics

基　　金：全军军事学研究生课题(2010JY0820-492)

摘　　要：利用经验公式计算了星地光链路在雾、雨、雪、云天气中的衰减,仿真结果表明:波长越长,雾对激光的衰减越小;雪对激光的衰减量高于雨对激光衰减量1～2个数量级;当光学厚度达到4.7时,云层对激光的衰减已达到20dB以上。综合考虑我国的地理分布和气候特点以及云层覆盖情况,建议我国星地光通信地面站选址可以考虑西北地区的塔里木盆地-内蒙古西部戈壁沙漠-黄土高原西北部一带。Abstract：The attenuation of satellite-to-ground optical link in fog, rain, snow and cloud is cal- culated with empirical formulas. The result of simulation shows the longer the length of the light wave, the smaller the attenuation of the laser in the fog; the attenuation in the snow is 10 -100 times higher than that in the rain; when the optical depth of cloud is 4.7, the laser at- tenuation is higher than 20 dB. Considering the geographic distribution, meteorological fea- tures and cloud cover statistics, it is suggested that the Tarim basin, the desert of western In- ner Mongolia and the northwestern part of Loess Plateau in northwest of China should be fa- vorable for satellite-to-ground optical communication ground station location.

关 键 词：星地光通信 天气条件 地面站选址 

分 类 号：TN929.1[电子电信—通信与信息系统]