频控阵MIMO雷达的目标数与方位参数联合估计方法  

Joint estimation method of target number and orientation parameters for FDA-MIMO radar

作　　者：孙贺麟 高洪元[1] 杜亚男 程建华 刘亚鹏 SUN Helin;GAO Hongyuan;DU Yanan;CHENG Jianhua;LIU Yapeng(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China;College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学智能科学与工程学院,黑龙江哈尔滨150001

出　　处：《通信学报》2023年第2期41-51,共11页Journal on Communications

基　　金：国家自然科学基金资助项目(No.62073093);黑龙江省自然科学基金资助项目(No.LH2020F017);黑龙江省博士后科研启动金资助项目(No.LBH-Q19098)。

摘　　要：针对频控阵MIMO雷达定位多个目标时,需要目标数先验信息,且多维参数估计计算量大的问题,提出了一种联合估计方法。该方法利用频控阵MIMO的角度与距离依赖性,将目标数与方位参数估计转化为空间谱上的多峰优化问题;设计了一种基于密度的多峰差分进化算法对其进行求解,降低了计算量且不需要单独的目标数估计算法。仿真结果表明,所提方法的目标数和方位参数估计性能均优于已有方法,突破了已有方位参数估计方法的应用局限,可以无量化误差地得到最优方位估计结果。To address the problem that the frequency diverse array MIMO(FDA-MIMO)radar requires a priori information on the target number when locating multiple targets and the multidimensional parameter estimation consumes a large amount of computation,a joint estimation method was proposed.The angle and distance dependence of the FDA-MIMO were utilized to transform the estimation of target number and orientation parameters into a multimodal optimization problem on the spatial spectrum,and a density-based multimodal differential evolution algorithm was designed to solve it,which reduced the computational load and did not require a separate target number estimation algorithm.Simulation results show that the proposed method outperformed the existing methods in estimating the target number and orientation parameters.It overcomes the application limitations of the existing orientation parameter estimation methods and can obtain optimal estimation results without quantization error.

关 键 词：频控阵 联合检测估计 信源个数估计 角度估计 距离估计 

分 类 号：TN911.7[电子电信—通信与信息系统]