近场源频率、波达方向和距离的联合估计方法  

Joint frequency、direction of arrival and range estimation for near-field sources

作　　者：王洪洋[1] 廖桂生[1] 王万林[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《电波科学学报》2004年第6期717-721,共5页Chinese Journal of Radio Science

基　　金：重点实验室基金项目资助

摘　　要：提出了一种基于高阶累积量的近场源频率、波达方向 (DirectionofArrival,DOA)和距离的联合估计算法。算法采用类似状态空间的方法构造信号输出累积量矩阵 ,而近场源频率、DOA和距离的估计通过对该输出矩阵的分解处理得到。各近场源参数估计由闭式给出 ,无需复杂的搜索运算 ,并且各参数间自动配对 ,不需要繁琐的配对过程 ,算法计算复杂度适中。同时 ,该算法适用于任意加性高斯噪声情形 ,计算机仿真结果证实了该算法的有效性。A novel method of joint frequency, angle of arrival and range estimation for near-field sources is proposed in this paper. The parameters can be estimated from the process of cumulant matrices which are formed using state-space realization approach. The algorithm proposed here is computationally efficient and has a good performance. Furthermore, it automatically determines the parameter pair matching. At the same time, the proposed method can be applied to non Gaussian signals corrupted by additive Gaussian noise and does not rely heavily on signal modeling. At last, computer simulations are carried out to illustrate the efficiency of the proposed method.

关 键 词：近场源 波达方向 距离 状态空间 累积量矩阵 

分 类 号：TN911.23[电子电信—通信与信息系统]