基于时延的宽带LFM信号DOA估计算法  

Wideband LFM Signal DOA Estimation Algorithm Based on Time-Delay

作　　者：张奎[1] 罗景青[1] 汪华兴[1] 

机构地区：[1]解放军电子工程学院,合肥230037

出　　处：《火力与指挥控制》2012年第6期92-95,共4页Fire Control & Command Control

摘　　要：针对常用宽带LFM信号DOA估计算法采样数据量大、运算量大的特点,提出了一种基于时延的宽带LFM信号DOA估计算法。先把阵元接收到的信号变换到频域,而后用极值频率点进行时延估计,并对各极值频率点的时延估计值进行加权平均,进而估计出宽带LFM信号的来波方位。仿真验证了该算法的合理性和有效性。As the traditional DOA estimation algorithm of wideband LFM signal has the weakness of large sampling value and caculating amount,a wideband LFM signal DOA estimation algorithm based on time-delay is proposed in this paper.Firstly,the signals received by the array are transformed into frequency domain.Then,the time-delay between the baseline is estimated using the extreme frequency point and the weighted mean is got.The DOA estimation of wideband LFM signal is got through the time-delay.Its effectiveness and correctness are verified by computer simulations at last.

关 键 词：宽带信号 极值频率点 DOA估计 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]