针对高功率脉冲干扰的改进功率倒置算法  

Improved Power-Inversion Algorithm for High Power Pulse Jamming

作　　者：梁嘉棋 刘宏波 李悦 肖思帅 LIANG Jiaqi;LIU Hongbo;LI Yue;XIAO Sishuai(National Key Laboratory of Science and Technology on Vessel Integrated Power,Naval Engineering University,Wuhan 430033,China;School of Electronic Engineering,Naval Engineering University,Wuhan 430033,China;Naval Research Institute,Beijing 100036,China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033 [2]海军工程大学电子工程学院,武汉430033 [3]海军研究院,北京100036

出　　处：《电子信息对抗技术》2023年第5期45-52,共8页Electronic Information Warfare Technology

基　　金：2021年湖北省重点研发计划项目(2021BIDS007)。

摘　　要：针对复杂电磁环境下宽带高速跳频系统易受高功率脉冲干扰影响导致通信质量差的问题,提出一种改进功率倒置算法。分析了传播信号与脉冲干扰的特性,采用脉冲检测与加权矢量求解并行的方法,以求得最优加权矢量,并仿真验证了算法的可行性。仿真结果表明,与传统功率倒置算法相比,改进功率倒置算法对大功率脉冲干扰的抑制效果更好,信干比为-30 dB时,获得的抗干扰增益高出约5 dB;信干比小于-20 dB时,改进功率倒置算法可降低宽带高速跳频系统的误码率;信干比大于-16 dB时,改进功率倒置算法抗干扰效果不佳,仅适用于高功率脉冲干扰下的场景。Broadband high-speed frequency hopping system is easily affected by high power pulse jamming under complicated electromagnetic environment,so as to result in poor communication quality.In order to solve the problem,an improved power-inversion algorithm is proposed.The characteristics of propagation signal and pulse jamming are first analyzed.Then,the method of parallel pulse detection module and weighted vector solving module is used to obtain the optimal weighted vector.The feasibility of the algorithm is verified by simulation.The simulation results show that compared with the traditional power-inversion algorithm,the improved power-inversion algorithm has better suppression effect on high-power pulse jamming.When the signal-to-jamming ratio is-30 dB,the anti-jamming gain is about 5 dB higher.When the signal-to-jamming ratio is lower than-20 dB,the improved power-inversion algorithm can reduce the bit error rate of broadband high-speed frequency hopping system.When the signal-to-jamming ratio is higher than-16 dB,the improved power-inversion algorithm has poor anti-jamming effect and is only suitable for the scene with high power pulse jamming.

关 键 词：高速跳频 功率倒置 脉冲干扰 加权矢量 抗干扰 

分 类 号：TN973.3[电子电信—信号与信息处理]