基于虚拟阵列变换的共形阵列信号DOA估计  

DOA Estimation of Conformal Array Based on Virtual Array Transform

作　　者：王瑞革[1] 王法栋[1] 

机构地区：[1]中国人民解放军92785部队

出　　处：《雷达科学与技术》2016年第4期448-452,共5页Radar Science and Technology

摘　　要：共形阵列是指与载体表面共形的天线阵列,对载体空气动力性能影响小,在军用、民用等飞行器上具有广泛的应用。针对共形阵列信号处理中的角度估计问题,给出了一种基于虚拟阵列变换思想的共形阵列信号DOA估计算法。该算法首先对接收数据进行虚拟阵列变换,利用变换后的数据,采用ESPRIT算法和MUSIC算法相结合,实现了对共形阵列信号二维角度估计。算法对阵列形状限制小,真正实现了适用于任意共形阵列。以圆柱共形阵列为例,通过仿真实验验证了算法的有效性。Conformal array has the similar shape as the platform surface,and has affect on its kinetic characteristics.Conformal array has wide applications in military and civilian aircraft.An estimation method of 2D-DOA is proposed for conformal array.In the method,virtual array data is built based on array received data.The DOA estimation can be calculated by ESPRIT and MUSIC algorithm.Simulation results demonstrate the effectiveness of the proposed algorithm.

关 键 词：共形阵列 DOA估计 虚拟阵列 MUSIC算法 

分 类 号：TN911.7[电子电信—通信与信息系统]