Response Pattern of an Acoustic Vector Sensor with Mis-Oriented Axes
Authors:Hye Rin Lee, Mario Razo
Mentor:Charles Lee, Professor of Math, CSUF
A traditional acoustic vector sensor (AVS) is composed of two or three orthogonally oriented and collocated velocity-component sensors with an optional pressure sensor. This research focuses on the non-orthogonal velocity components of an AVS. In particular, we investigate the impacts of the non-orthogonality of the velocity components on the response pattern of the AVS. We developed the mathematical formulations for the response pattern corresponding to the mis-orientation. More importantly, we take advantage of the distortion of the response pattern to purposely mis-orient the velocity components of an AVS to ultimately create the pattern with the largest possible response. In addition, we validated the optimal response numerically and established the first order bound for the error. Our results indicate that mis-orientation of the velocity components can make the AVS system perform more efficiently, as much as 50% more.