近场动目标多普勒频率、距离及方位估计算法  

Algorithm for estimating Doppler frequency,range and bearing of near-field moving target

作　　者：杨勇[1] 谭渊[1] 张晓发[1] 袁乃昌[1] 

机构地区：[1]国防科技大学电子科学与工程学院微波中心,湖南长沙410073

出　　处：《电波科学学报》2011年第2期344-349,共6页Chinese Journal of Radio Science

摘　　要：针对近场多动目标的定位问题,提出一种近场动目标多普勒频率、距离及方位三维参数估计算法。采用多重信号分类(MUSIC)算法估计回波信号频率,以各个频率估计为参考对信号进行时域滤波,从而实现各目标回波信号的分离。使用二维MUSIC方法由每个目标的回波信号估计其距离与方位。该算法能精确估计近场动目标多普勒频率、距离及方位参数,计算机仿真结果证明了其有效性。To locate the near-field moving targets, an efficient algorithm for Doppler frequency, range and bearing estimation of near-field moving targets is presented. The frequency of target echo is estimated using 1-D multiple signal classification （MUSIC） algorithm at first. Then according to the different frequencies of targets, target echo is separated through temporal filtering. The range and bearing of each target is estimated through employing 2-D MUSIC algorithm finally. The 3-dimensional parameter of near-field moving targets can be estimated accurately using the algorithm provided in this paper. Simulation results are presented to prove the validity of the algorithm.

关 键 词：阵列信号处理 MUSIC 频率估计 距离估计 方位估计 

分 类 号：TN958[电子电信—信号与信息处理]