非均匀双基地MIMO雷达目标参数联合估计算法  

Joint Estimation of Target Parameters for Non-Uniform Bistatic MIMO Radar

作　　者：李云成 崔琛 龚阳 LI Yun-cheng;CUI Chen;GONG Yang(Electronic Countermeasure Institute,National University of Defense Technology,Hefei 230037,China)

机构地区：[1]国防科技大学电子对抗学院

出　　处：《电子信息对抗技术》2019年第5期32-38,共7页Electronic Information Warfare Technology

摘　　要：针对非均匀配置下的双基地MIMO雷达远场目标参数估计问题,提出了一种基于平行因子分析和分数阶傅里叶变换的目标收发角、径向速度、径向加速度联合估计算法。首先将匹配滤波后的信号转化为三阶张量并对其进行降维处理,然后通过交替最小二乘和Root-MUSIC等算法得到目标收发角,最后利用分数阶傅里叶变换的能量聚集特性估计出目标的径向速度和径向加速度。该算法实现了目标收发角、径向速度、径向加速度的联合估计,且所得参数自动配对。仿真结果验证了所提算法的有效性。To solve the problem of far-field target parameter estimation in bistatic MIMO radar under non-uniform configuration,a joint estimation algorithm of target transmit-receive azimuths,radial velocity and radial acceleration based on parallel factor analysis and fractional Fourier transform(FRFT)is proposed.Firstly,the matched filtered signal is converted into a third-order tensor and its dimension is reduced.Then,the target transmit-receive azimuths are obtained by the alternating least squares and Root-MUSIC algorithms.Finally,the radial velocity and radial acceleration of the target are estimated by using the energy accumulation characteristic of FRFT.The estimation of the target transmit-receive azimuths,radial velocity and radial acceleration is realized by the proposed algorithm,and the parameters are matched automatically.The effectiveness of the proposed algorithm is verified by simulation results.

关 键 词：双基地MIMO雷达 非均匀配置 平行因子分析 分数阶傅里叶变换 径向加速度 

分 类 号：TN953.7[电子电信—信号与信息处理]