航空平台间激光通信捕获链路功率分析与仿真  

Analysis and Simulation of the Power of Laser Communication Acquisition Link in Air-Air Optical Communication

作　　者：徐春凤[1,2] 韩成[2] 姜会林[1] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]长春理工大学计算机科学技术学院,吉林长春130022

出　　处：《兵工学报》2016年第11期2015-2021,共7页Acta Armamentarii

基　　金：国家自然科学基金项目(91338116)

摘　　要：为研究航空平台间激光通信系统中主要环节和信道对信标光功率的影响,根据捕获探测器的信噪比和探测概率关系,分析激光器发射到探测器接收全环节的信标光功率变化情况,建立了空空激光通信捕获链路仿真系统。通过该仿真系统,分析不同大气能见度所对应的探测概率,在此基础上讨论要实现探测概率为99%,需要的最小发射功率和最长通信距离。仿真结果表明:发射功率越大,大气能见度对航空平台间激光通信探测概率的影响越明显;发射功率不变,大气能见度越高时,最长链路距离越远;当发射功率为5 W,地面能见度大于等于10 km时,即可实现150 km的激光链路。通过仿真系统得出了信标光发射功率与探测概率之间的关系,对激光器的选择起到一定的借鉴作用。在仿真的基础上,开展的飞机间野外试验,可以有效地模拟飞机间激光通信系统的捕获探测概率。In order to study the effects of the key link and channel in air-air laser communication system on beacon power,the change of beacon power from laser emission to detector receiving is analyzed,and the simulation system of air-air optical communication acquisition link is established based on the relation between signal-to-noise ratio and detection probability of acquisition detector. A simulation system is used to analyze the detection probabilities under different atmospheric visibility. The required minimum transmitting power and maximum communication distance are analyzed with detection probability of 99%. The results show that the greater the transmitting power is,the more obvious the impact of atmospheric visibility on the detection probability of the air-air laser communication is. When the transmitting power is constant,the atmospheric visibility is higher,and the longest link distance is greater. When the transmitting power of beacon is 5 W and the ground atmospheric visibility is or more than 10 km,the relevant maximum communication link of 150 km can be achieved. The relationship between the transmitting power ofbeacon and the detection probability is explored by the simulation system. The field experiment is carried out on the basis of simulation,which could effectively simulate the acquisition and detection probability of air-air laser communication.

关 键 词：通信技术 空空激光通信 捕获链路 能见度 信噪比 探测概率 

分 类 号：TN929.12[电子电信—通信与信息系统]