一种新的单通道阵列DOA估计快速算法  

A novel algorithm for fast DOA estimation in switch antenna array

作　　者：张珂[1] 张剑云[1] 

机构地区：[1]解放军电子工程学院,安徽合肥230037

出　　处：《航天电子对抗》2011年第3期47-50,共4页Aerospace Electronic Warfare

摘　　要：针对现有单通道阵列DOA估计算法复杂度较高、实时性较差的问题,提出一种适用于单通道阵列的快速DOA估计算法。该算法将常规多通道阵列的空间FFT算法引入单通道阵列信号处理中,将通道切换时间带入FFT运算中,构建了新的变换核函数,利用该核函数可直接对单通道阵列的采样信号进行空间FFT变换,基于此提出了适用于单通道阵列的SAA-FFT算法。理论分析与仿真实验证明了该算法的有效性。An algorithm for fast DOA estimation in switch antenna array is proposed for the high complexity and low timeliness of the present algorithms. This algorithm applies the spatial FFT of multi-channel antenna array to switch antenna array. It takes the switching time into operation to construct the new transformation function, which can be utilized to operate spatial FFT to the sampled data of switch antenna array directly. Based on this, the SAA-FFT algorithm fitted for switch antenna array is proposed. The theoretical analysis and simulation results demonstrate that the algorithm is effective.

关 键 词：单通道阵列 DOA估计 空间FFT 阵列信号处理 

分 类 号：TN911.72[电子电信—通信与信息系统]