基于矩阵滤波技术的海面多干扰抑制方法研究

Research on Matrix Filter Techniques for Underwater Surface Mul-Interferences Suppression

广义的空域滤波技术在抑制拖曳船噪声及已知干扰的问题上起到了很好的效果,但对于海面存在多个强干扰源或者干扰源频率信息未知的情况,需要一种改进的设计方法。基于最小二乘原理,提出了一种抑制海面多干扰的矩阵滤波方法,通过计算机仿真可知,能够在干扰源频率信息不完全知道的情况下有效地抑制海面的多干扰源以实现水下弱目标的定位。

The generalized spatial filter does well on suppressing the noise form a tow-ship or other noise whose characters are known as a prior. However, a new method is needed to find out if the information for the interference is unknown. This paper introduces the spatial matrix filter methods designed by the least square principle for surface interferences. Computer simulation proves the proposed method can suppress the mul-interferences to detect weak target very well while there is not enough frequency information.