空间辐射环境对卫星光通信系统误码率的影响  

Research on the influence of space radiation environment on the BER of optical satellite communication system

作　　者：侯睿[1] 赵尚弘[1] 幺周石[2] 胥杰 方绍强[4] 付灵丽[2] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077 [2]中国空间技术研究院西安分院,陕西西安710000 [3]空军第二飞行学院,陕西西安710306 [4]空军后勤部,北京100720

出　　处：《激光与红外》2012年第9期1021-1025,共5页Laser & Infrared

基　　金：国家高技术研究发展计划"863"项目(No.2007AA01Z294);中国博士后科研基金项目(No.20090461466)资助

摘　　要：为了提高卫星光通信系统的空间抗辐射性能,开展了空间辐射损伤对卫星光通信系统的误码率影响研究。建立了空间辐射损伤的误码率模型,并基于该模型对光源和光电探测器辐射损伤条件下的系统误码率进行了数值计算。结果表明γ射线辐射和质子辐射均能对通信系统误码率造成几个量级的下降,需要增加合理的空间辐射屏蔽单元或者选择空间抗辐射性能较高的零差BPSK工作模式。To improve the space anti-radiation performance of the optical satellite communication system, the research on the space radiation environment＇s influence on system bit error ratio（BER） is carried out. The radiation-induced BER model is established, based on which the BER numerical calculations after the radiation damage of either optical source or optical detector are developed. The calculation results have proven that both T radiation and proton radiation can degrade the system BER by several order of magnitude. It points out that some suitable radiation shielding measures or homodyne BPSK mode are needed.

关 键 词：空间辐射 卫星光通信系统 误码率 

分 类 号：TN929[电子电信—通信与信息系统]