二维小基阵无源声测定向算法研究与仿真

无源声测定向是声学监视技术的重要研究内容。为了实现对低空运动目标的声学监视，提出了一种二维任意阵形小基阵定向方法，并用线性回归分析原理导出了定向算法，对定向误差进行了理论分析和数值仿真。该算法不仅适用于随机布阵的二维小基阵情况，也可推广到三维小基阵对声源的定向。理论分析和仿真实验表明，该定向算法正确可行，有较大的实用价值。

Study on Algorithm of Acoustic Passive Bearing Estimation with the Small Planar Array and Simulation

Passive acoustic bearing estimation is an important aspect in the acoustic surveillance. In order to realize the surveillance to the low altitude targets, the method of acoustic passive bearing estimation with a small random planar array is presented in the paper. Using the linear regression analysis, the algorithm of acoustic passive bearing estimation is derived. It is also studied the errors of the method by theoretic analysis and simulation. The method can be used to estimate the bearing not only in the condition of the planar array, but also in the condition of the solid array. By theoretic analysis and simulation, it shows that the method is feasible, and could be used in the practice.