Analysis of Directivity Index Under Large Azimuth Angle of Linear Array

This article has carried out a detailed analysis aiming at the problem of the change of directivity index under large azimuth angle of linear array, and explains the change of the directivity index at large azimuth angles under different conditions, carries out the corresponding simulation and verification. The analysis in this article shows that it is suitable for the design and index demonstration of towed linear array sonar, flank array sonar, etc., and it has huge engineering application value.