无源单通道阵列快速DOA估计算法  

A Fast Algorithm for DOA Estimation in Passive Single-Channel Antenna Array

作　　者：张珂[1] 张剑云[1] 

机构地区：[1]电子工程学院305教研室,合肥230037

出　　处：《电子信息对抗技术》2011年第5期5-9,共5页Electronic Information Warfare Technology

摘　　要：针对现有无源单通道阵列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,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 single-channel 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 single-channel 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 sampied data of single-channel antenna array directly. Based on this, the SAA-FFT algorithm fitted for single-channel 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：TN971.3[电子电信—信号与信息处理]