基于改进波束域MUSIC算法的高分辨方位估计

Study of the high resolution DOA estimation technology based on the modified beam space MUSIC algorithm

波束域MUSIC算法在波束域高分辨目标方位估计算法中是最具代表性的方法.和阵元域处理相比,波束域处理具有计算量小,分辨信噪比门限低的优点,文中论及窄带信号的波达方向估计问题,提出了高分辨处理的一种改进的波束域MUSIC算法.仿真计算表明,这种改进算法降低了信号的分辨信噪比门限.

The beam space MUSIC algorithm is the most representative method of beam space high resolution Direction-of-Arrival （DOA）. The operation in beam space offers a number of advantages over the operation in element space, including reduced computational complexity and lower SNR resolution threshold. This paper addresses the problem of DOA of narrow-band emitter signals impinging on an antenna array, and a modified beam space MUSIC algorithm for high resolution array processing is presented. Simulation results show the improved algorithm reduces SNR resolution threshold.