不同天顶角的星地信道光链路误码率分析  

Analysis of laser link BER of satellite-to-ground channel with different zenith angle

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

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《光通信技术》2011年第5期60-62,共3页Optical Communication Technology

摘　　要：把复杂的大气衰减和湍流效应分别等效为链路的功率损耗和接收机噪声,建立了星地级联信道光链路模型,分析了不同天顶角下大气衰减和湍流对链路误码率的影响。数值仿真结果表明:大气衰减和湍流均造成链路误码率的增大,小天顶角情况下,链路误码率对大气湍流更为敏感;而大天顶角情况下,大气衰减是造成链路误码率急剧增大的主要原因。The laser link modeling of satellite-to-ground concatenated channel is presented,regarding the complicated atmospheric attenuation and turbulence as an equivalent link power loss and receiver noise respectively.The link BER with difference zenith angle,affected by atmospheric attenuation and turbulence,is analyzed by numerical simulation.The result shows： both attenuation and turbulence make link BER rising;BER is more sensitive to atmospheric turbulence with small zenith angle,but atmospheric attenuation is the main cause of the sharply increment with large zenith angle.

关 键 词：星地光链路 大气衰减 大气湍流 天顶角 误码率 

分 类 号：TN929.11[电子电信—通信与信息系统]