基于空间平滑的单次快拍DOA估计方法

Research on DOA Estimation Method of Single Snapshot Based on Spatial Smoothing

针对DOA估计的实时性和数据污染影响,给出了一种基于空间平滑的单次快拍DOA估计算法。由空间平滑技术,对接收的单次快拍数据采取解相干,再对Toeplitz矩阵进行协方差处理、采用特征分解、MUSIC算法和ESPRIT算法对信号实现DOA估计。该算法只需单次快拍,大大地减少了计算量,并且比现有的算法估计性能更好。采用计算机实验模拟分析和验证,证实了其有效性。

A single snapshot DOA estimation algorithm based on spatial smoothing is proposed for the real-time performance of DOA estimation and data contamination.The spatial smoothing technique is used to decorrelate the received single snapshot data,then the Toeplitz matrix is processed with covariance,and the signal DOA estimation is achived by using eigendecomposition MUSIC algorithm and ESPRIT algorithm.The proposed algorithm requires only a single snapshot,which greatly reduces the computation and has better estimation performance than the existing algorithms.The effectiveness of the method is verified by computer simulation.