基于微波光子技术的联合干扰样式的研究  

Joint jamming pattern of photon⁃assisted intermittently sampling and noise convolution modulation

作　　者：李嘉琪 许萍 宋柯 杜科 于祥祯 Li Jiaqi;Xu Ping;Song Ke;Du Ke;Yu Xiangzhen(Shanghai Radio Equipment Research Institute,Shanghai 201109,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)

机构地区：[1]上海无线电设备研究所,上海201109 [2]上海机电工程研究所,上海201109

出　　处：《航天电子对抗》2021年第5期31-34,共4页Aerospace Electronic Warfare

摘　　要：针对线性调频脉冲雷达信号,提出了一种基于微波光子技术的间歇采样转发与噪声调制的联合干扰样式。该方法中,利用有源光纤环脉冲复制器生成复制周期可调的高速采样光脉冲,当雷达线性调频脉冲信号经过天线进入电光调制器加载到光脉冲载波上时,实现对该信号的间歇采样,再通过空间光强度调制器将随机噪声序列卷积调制到间歇采样脉冲上,最后经过光电探测器和天线转发出去形成干扰。利用微波光子技术对线性调频脉冲信号进行快速间歇采样转发,间歇采样率可通过延时线自由调节,因此能够快速实现不同的干扰效果,硬件上省去电学模数转换及数字射频存储器件,避免了大量数据的存储和处理带来的时间损耗。该方法可以在雷达径向距离上形成假目标群,若增加随机噪声序列长度,还可以形成压制干扰样式。仿真结果证明了其可行性。For LFM pulse radar signal,a joint jamming mode is presented based on microwave photonic technology of intermittent sampling and forwarding and noise modulation.In this method,the use of active optical fiber ring generates high-speed sampling pulse of light with adjustable replication.When linear frequency modulation pulse signal through the antenna into the electro-optic modulator is loaded into the light pulse carrier,the intermittent sampling of the signal is achieved,and then the random noise sequence does the convolution operation with the intermittent sampling pulse through the spatial light intensity modulator.Finally,the jamming signal is transmitted by photodetector and antenna.The microwave photonic technology is used to quickly and intermittently sample the linear frequency modulated pulse signal,and the intermittently sampling rate can be adjusted freely by the delay line,so different jamming effects can be achieved quickly,and the electrical analog-digital conversion and digital RF storage devices are omitted on the hardware,avoiding the storage and processing of a large number of data.This method can form a false target group in the radial range of radar,and can also form a suppressing jamming pattern if the length of random noise sequence is increased enough.Simulation results show the feasibility of the proposed method.

关 键 词：线性调频脉冲 间歇采样转发 噪声卷积调制 微波光子 

分 类 号：TN972.31[电子电信—信号与信息处理] TN974[电子电信—信息与通信工程]