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Wave Generation by a Finite Baffle Array in Application to Beam-Forming Analysis

机译:有限挡板阵列产生的波在波束形成分析中的应用

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摘要

Directional excitation of sound in an aperiodic finite baffle system is analyzed using a method developed earlier in electrostatics. The solution to the corresponding boundary value problem is obtained in the spatial-frequency domain. The acoustic pressure and normal particle velocity distribution in acoustic media can be easily computed by the inverse Fourier transform from their spatial spectra on the baffle plane. The presented method can be used for linear acoustic phased arrays modeling with finite element size and inter-element interactions taken into account. Some illustrative numerical examples presenting the far-field radiation pattern and wave-beam steering are given.
机译:使用较早在静电学中开发的方法来分析非周期性有限挡板系统中声音的定向激励。在空间频率域中获得了相应的边值问题的解决方案。声介质中的声压和法向粒子速度分布可以很容易地通过其傅立叶逆变换从挡板平面上的空间谱中计算出来。所提出的方法可用于考虑有限单元尺寸和单元间相互作用的线性声相控阵建模。给出了一些表示远场辐射方向图和光束转向的说明性数值示例。

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