FDA-MIMO雷达主瓣欺骗干扰对抗方法

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英文篇名：A Method of Mainlobe Deception Jamming Countermeasure in FDA-MIMO Radar 作者：谭清莉 ; 张艺乐 ; 张伟 ; 张学敬 英文作者：TAN Qingli;ZHANG Yile;ZHANG Wei;ZHANG Xuejing;School of Electronic Engineering,University of Electronic Science and Technology of China; 关键词：频率分集阵列 ; 对数频率偏移 ; MIMO雷达 ; 主瓣欺骗干扰 英文关键词：frequency diverse array;;logarithmic frequency offset;;MIMO radar;;mainlobe deception jamming 中文刊名：LDKJ 英文刊名：Radar Science and Technology 机构：电子科技大学电子工程学院; 出版日期：2017-12-15 出版单位：雷达科学与技术 年：2017 期：v.15 基金：国家自然科学基金(No.61401062) 语种：中文; 页：LDKJ201706017 页数：6 CN：06 ISSN：34-1264/TN 分类号：105-110

摘要

频率分集阵列多输入多输出(FDA-MIMO)雷达发射阵列中各阵元的载频相对于起始阵元存在频率偏移。基于频率分集阵列联合波束图存在的角度-距离二维相关性,结合空间自适应波束形成技术可用来抑制主瓣欺骗干扰。针对FDA-MIMO雷达波束形成抑制主瓣欺骗干扰时存在的距离周期性问题,提出了一种采用对数频率偏移来消除距离周期性的方法。该方法用对数频率偏移代替常用的线性频率偏移,克服了FDA-MIMO雷达联合波束图的距离周期性,取得了更好的抗干扰效果。仿真结果验证了该方法的有效性。
        The carrier frequencies of transmit elements are different from the initial element in the frequency diversity array multiple input multiple output(FDA-MIMO)radar.Based on angle-range dependence of the pattern of frequency diverse array,mainlobe deception jamming can be suppressed via spatial adaptive beamforming.Focusing on the periodicity of range when suppressing the jamming,a novel method to eliminate the periodicity by using logarithmic frequency offset is proposed.This method utilizes logarithmic frequency offset instead of liner one to avoid the periodicity of range in FDA-MIMO pattern,thus providing a better performance in suppressing the jamming.Simulation results demonstrate the effectiveness of this method.

引文

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