论文部分内容阅读
声矢量传感器能够同时拾取空间同一点的声压振速信息,可以进行声场声强测量。据此提出了阵列声强器的概念。即当声矢量传感器成阵时,在波束域进行声强处理,以获得目标的方位信息。当空间高度欠采样时,声矢量传感器阵将产生栅瓣模糊,利用阵列声强器获得的方位信息可以抑制稀疏阵的栅瓣模糊,使得声矢量传感器阵在不增加阵元个数的前提下增大了阵列孔径,从而提高了方位分辨力。对阵列声强器去模糊性能进行了理论分析,仿真结果表明了所提算法的有效性。
Acoustic vector sensors can simultaneously pick up the sound pressure and vibration velocity information at the same point in the space, and can measure the sound field intensity. Accordingly, the concept of array sound power amplifier is proposed. That is, when the acoustic vector sensor is in array, the sound intensity is processed in the beam domain to obtain the target orientation information. When the space is highly undersampled, the acoustic vector sensor array will produce grating petals, and the azimuth information obtained by the array acoustic intensity detector can restrain the grating lobes of the sparse array, so that the acoustic vector sensor array without increasing the number of array elements Increasing the array aperture, thereby improving the azimuth resolution. The theoretical analysis of the ambiguous performance of the array acoustic intensity device is carried out. The simulation results show the effectiveness of the proposed algorithm.