矢量阵强相干干扰抑制技术研究

Suppressing strong coherent interference by acoustical vector sensor array

提出了一种单矢量传感器相干干扰抑制技术,并推广到声矢量阵来抑制强的相干干扰.利用声矢量传感器组合指向性零点可电子旋转的特点,用自适应抵消技术抑制各阵元数据中的相干干扰,可获得相对"干净"的信号,对该信号进行矢量阵波束形成,达到强相干干扰抑制的目的.计算机仿真和湖试试验结果表明:该方法能有效抑制方位已知的强相干干扰,结合矢量传感器的组合指向性可电子旋转的特点和自适应抵消技术,加上声矢量阵的指向性增益,可达到用声矢量阵有效抑制强相干干扰的目的.

A single vector sensor-based technique is proposed, which is used in acoustical vector sensor array to suppress strong interference. The combined directivity zero of acoustical vector sensor can be rotated along electronic directions, by which the interference in the original received data of each unit can be suppressed using adaptive filtering algorithm to achieve target signals with very low level interference. This type of target signals were beamformed by the vector sensor array to suppress the strong coherent interference. The simulation results and the lake experiment show that this approach can be used to suppress strong coherent interference efficiently. The rotating directivity zero of the vector sensor and adaptive noise canceling algorithm, along with the improve gain of vector sensor array, can suppress strong coherent interference effectively.