基于多波束系统的波束域方位估计方法研究

The Study on Beam-space DOA Estimator Based on Beam-forming System

文中提出了一种基于多波束系统的波束域方位估计(DOA)方法,此方法在自导多波束系统基础上结合波束域高分辨算法,首先利用多波束系统对目标方位进行粗估,然后在此基础上用波束域高分辨方法进行细估。此方法不仅可以提高原系统的方位估计精度,使其具有多目标高分辨定位能力,而且其计算量小于阵元域高分辨算法和波束域的并行处理方法。计算机仿真和分析表明此方法具有应用前景。

This paper proposed an efficient DOA estimator based on beam-forming system, it combines the torpedo homing conventional beam forming method and beam-space DOA method together, first using the result of beam-forming system as a coarse estimation, and then using the beam-space DOA method to carry out fine estimation . This method can enhance the precision of original system and let it has the ability of high-resolution multiple targets location, moreover its computation complexity is less than element-space high-resolution method and beam-space parallel method. Com- puter simulation and analysis demonstrate that this method has promising application.