基于Matlab的常见阵型阵增益性能仿真研究

摘要

The spatial gain is an important indicator of sonar equation,thus the study on it is of great significance.The spatial gain is a description of the formation ability to enhance the signal and suppress the noise.Under given condition,it's expected to be greater. The directivity will be distorted when beam forming technology is used,thus the gain will also be changed accordingly, which leads to different gain different beam steering.In this paper,the gain of several common array of different parameters will be researched from two aspects- directivity factor and SNR gain.In the end,the existing problems of the two measurements will be ana-lyzed.%阵增益是声纳方程的一项重要指标,其研究具有重要意义.阵增益是一种描述阵型对信号加强和对噪声抑制的量,工程上希望在既定条件下,阵增益越大越好.声纳基阵在进行波束形成时,其指向性图会发生畸变,因而增益也会发生相应变化,因而在不同束控方向增益也会有所差别.在论文中,将从指向性因数和信噪比增益两方面来研究不同参数情况下几种常见阵型的增益情况,并衡量这两种方法的内在联系和优缺点.