非均匀线阵的宽带波达方向估计

摘要

研究了基于非均匀线阵的宽带DOA估计问题和非均匀线阵的阵形.对宽带相干信号子空间算法(CSM)和修正MUSIC算法(MMUSIC)的基本原理作了简单介绍.基于修正MUSIC算法和CSM算法,提出了一种适合非均匀线阵的宽带DOA估计算法.仿真结果表明提出算法在非均匀线阵对称布阵方式下取得很好的效果,提高了DOA估计性能.%The manifold of non-uniform linear array and its wideband DOA estimation are studied. The coherent signal-subspace method (CSM) for wideband signals and the modified MUSIC algorithm are introduced. A new algorithm of wideband DOA estimation for non-uniform linear array is proposed based on the modified MUSIC algorithm and the CSM. The simulation results indicate the performance of the algorithm is enhanced for wideband sources and non-uniform linear array.