基于空间频率估计的阵列测向方法

Array DOA Estimation Based on Spatial Spectrum Estimation

针对窄带信号模型下的均匀线性阵列测向,提出一种基于空间频率估计的高效快速测向方法,介绍了该方法的测向原理,研究了空间采样率与无模糊入射角估计范围之间的关系,分析了影响测向误差的因素。基于该方法对一种阵列构型下的信号入射角进行了仿真估计。结果表明,利用所提方法可以在采用均匀阵列模型的情况下达到较高的测向精度。

For the DOA estimation of uniform linear arrays under narrowband signal modelan efficient and fast direction-finding method based on spatial spectrum estimation is proposed.The principle of DOA estimation is presentedthe relationship between spatial sampling rate and the unambiguous DOA estimation range is studiedand the factors affecting DOA estimation accuracy are analyzed.Based on this methoda simulation of DOA estimation under a specific uniform array model is given.The results show that high DOA estimation accuracy can be achieved by using this method.