一种针对雷达回波分裂的相位补偿处理方法  

Phase Compensation Accumulation Method Based for Radar Echo Splitting

作　　者：代妍 刘丹[1] 胡庆荣 陈成增[1] 王悦循 DAI Yan;LIU Dan;HU Qing-rong;CHEN Cheng-zeng;WANG Yue-xun(Beijing Institute of Radio Measurement,Beijing 100854,China;China Aerospace Systems Engineering Corp.,Beijing 100070,China)

机构地区：[1]北京无线电测量研究所,北京100854 [2]中国航天系统工程有限公司,北京100070

出　　处：《现代防御技术》2022年第3期84-89,共6页Modern Defence Technology

摘　　要：随着雷达带宽的增大,单个脉冲的能量分散到不同的距离单元里,造成回波分裂,此时信噪比降低,不利于目标的检测。针对该问题,提出了一种回波相位补偿处理方法。该方法以2个散射点为例,对不同相对距离下的散射点回波进行分析,得到其相位关系,基于分析结果对线性调频信号回波进行相位补偿处理,将分散在不同距离单位的散射点回波信号有效积累,提高了信噪比,进而提高了检测概率。通过蒙特卡罗仿真验证了该方法的有效性。As the radar bandwidth increases,the energy of a single pulse is dispersed into differ⁃ent range units,resulting in echo splitting.At this time,the signal to noise ratio(SNR)decreases,which is not conducive to target detection.For this problem,an echo phase compensation method is proposed.Taking two scattering points as examples,the echo of scattering points at different relative distances is analyzed to obtain their phase relations.Based on the analysis results,the phase compen⁃sation process is carried out for the echo of linear frequency modulation(LFM)signal,and the echo signal scattered in different distance units is accumulated effectively,which improves the SNR and the detection probability.The effectiveness of the method is verified by Monte-Carlo simulations.

关 键 词：回波分裂 信噪比 目标检测 相位补偿 线性调频信号 蒙特卡罗仿真 

分 类 号：TN957[电子电信—信号与信息处理] TJ76[电子电信—信息与通信工程]