基于L型阵的ESPRIT算法在DOA估计中的应用  

Application of an ESPRIT Algorithm in DOA Estimation Based on L-shaped Array

作　　者：杨荣山[1] 张宁[1] 张玉[1] 

机构地区：[1]中国人民解放军61711部队

出　　处：《无线电通信技术》2013年第4期85-88,共4页Radio Communications Technology

摘　　要：针对多信号同时测向问题,提出了一种基于L型阵的ESPRIT波达方向估计算法。利用阵元几何平移不变的特性,构造了包含多个入射信号特征向量的估计量,估计出入射信号的方位角和俯仰角。不需要二维谱峰搜索,能够在实数域中直接获得信号子空间,并且能够实现多个信号的同时估计,有效降低运算量。计算机仿真验证了算法的有效性。Aiming at simultaneous direction of arrival（DOA） estimation of multiple signals,this paper proposes an ESPRIT DOA estimation algorithm based on L-shaped array.Using the geometry translation invariant features of array element,this algorithm constructs the estimators including eigen vectors of multiple incident signals,and estimates the azimuth and elevation of incident signal.The algorithm does not require the two-dimensional spectral peak searching,and directly achieves the signal subspace in the real number field.Further,multiple signals can be estimated simultaneously,so the amount of the computation can be reduced.Simulation results prove the effectiveness of the algorithm.

关 键 词：二维测向 旋转不变子空间法 波达方向 

分 类 号：TN911.22[电子电信—通信与信息系统]