为更好地应用阵列定位水下噪声源的位置，本文针对2种规则几何结构阵列的声源定位性能展开研究。建立圆阵（UCA）和线圆组合阵（UCA-ULA）的数学模型，基于music和最小范数（Mini-norm）波束形成原理，分别给出圆阵和线圆组合阵声源定位算法的解析表达式。通过计算机仿真，对比分析了2种典型阵列结构对声源的定位性能影响。仿真结果表明，在较低信噪比（<10 dB）时，圆阵和Mini-norm算法组合性能最好，在多信号源时，线圆组合阵与Music算法组合效果更好。
The performance of two regular geometric arrays is studied in this paper in order to locate the underwater noise source better. Firstly, the mathematical models of circular array (UCA) and line circle array (UCA-ULA) are established. Secondly, based on the principle of music and mini-norm beamforming, the analytic expressions of source localization algorithms for circular array and linear-circular array are given respectively. Finally, the influence of two typical array structures on the localization performance of sound source is anhgalyzed by computer simulation. Simulation results show that the combination of circular array and Mini-norm algorithm performs best at lower SNR (<10 dB), the combination of line array and Music algorithm is best in multiple signal sources.
2019,41(12): 186-190 收稿日期：2018-11-06
DOI：10.3404/j.issn.1672-7649.2019.12.036
分类号：427.9
作者简介：吕孟婷(1992-),女,硕士研究生,研究方向为为阵列信号处理
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