基于波束形成的地面目标测向方法研究

Ground target direction-finding approach research based on beam forming

为进一步提高地面声目标测向的精度,本文将波束形成技术引入到地面声目标的测向中去,在四元十字阵的基础上,重点分析讨论了基于声信号的地面目标测向的接收信号模型和经典的Capon和Music方法。在实际信号的基础上,分别采用了Capon和Music方法对两种地面目标信号进行了测向,实验结果表明了两种方法应用于声目标测向的有效性,且由于music方法突破了"瑞利限",其在多目标测向中精确性更好。

In order to improve the accuracy of ground target direction-finding,the beam forming technical is involved to find the direction of the acoustic ground targets in battlefield. Based on the detectors with cross shape,the approach of direction-finding is discussed. Then,the methods of Capon and Music are used in the direction-finding of the acoustic ground targets. Simulation results indicate the approach is effective in direction-finding of the acoustic ground targets,and the method of Music is better in the multiple ground target direction-finding.