| 张孟浩,左曙光,褚志刚,何吕昌.轮形阵列波束形成的优化设计[J].声学技术,2012,(4):423~426 |
| 轮形阵列波束形成的优化设计 |
| Optimal design of wheel array beamforming |
| 投稿时间：2011-11-26 修订日期：2012-01-29 |
| DOI：10.3969/j.issn1000-3630.2012.04.017 |
| 中文关键词: 波束形成 轮形阵列 正交试验 优化设计 |
| 英文关键词: beamforming wheel array orthogonal experiment optimal design |
| 基金项目:国家自然科学基金资助项目(51075302) |
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| 中文摘要: |
| 基于波束形成方法的噪声源识别中, 阵列性能影响着声源识别的效果。针对轮形阵列, 采用正交试验的方法, 对阵列的几何参数进行优化设计。通过逐步缩小参数最优值的取值范围, 使在传声器数目和阵列尺寸一定的情况下, 阵列的声源识别效果得到改进。经优化, 轮形阵列的最大旁瓣水平曲线在很宽的频率带上保持在-16 dB以下, 比普通轮形阵列的最大旁瓣水平降低了3 dB以上。验证了正交试验方法在阵列优化设计的可行性, 为波束形成装置的开发提供了理论依据。 |
| 英文摘要: |
| In the process of noise source identification based on beamforming, array performances will seriously influence the noise source identification result. Based on the method of orthogonal experiment, the geometric parameters of wheel array can be designed optimally. When the number of microphones and the array size are fixed, the noise source identification result would be better by narrowing the scope of the optimal parameters gradually. Through optimizing, the maximum sidelobe level of the wheel array keeps below -16 dB in a wide frequency scope, which is 3 dB lower than the common wheel array. The feasibility of orthogonal experiment for array design is verified, which provides a theoretical basis for developing beamforming devices. |
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