| 基于分布源边界点法的局部近场声全息技术 |
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| 引用本文： | 毕传兴,袁艳,贺春东,徐亮.基于分布源边界点法的局部近场声全息技术[J].物理学报,2010,59(12):8646-8654. |
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| 作者姓名： | 毕传兴 袁艳 贺春东 徐亮 |
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| 作者单位： | 合肥工业大学噪声振动工程研究所,合肥 230009 |
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| 基金项目： | 国家自然科学基金(批准号:10974040, 10874037)、霍英东教育基金(批准号:111058)和教育部新世纪优秀人才支持计划(批准号:NCET-08-0767)资助的课题. |
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| 摘 要： | 为了克服基于分布源边界点法的近场声全息技术在小全息孔径条件下造成的重建误差问题,提出了基于分布源边界点法的局部近场声全息技术.该技术运用分布源边界点法,采用测得的较小全息面上的声压数据来外推较大全息面上的声压数据,然后用外推的数据进行全息重建.仿真和实验结果验证了采用该技术在小全息孔径条件下进行声源局部重建的有效性.
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| 关 键 词： | 近场声全息 边界点法 数据外推 |
| 收稿时间： | 1/5/2010 12:00:00 AM |
Patch nearfield acoustic holography based on the distributed source boundary point method |
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| Bi Chuan-Xing,Yuan Yan,He Chun-Dong,Xu Liang.Patch nearfield acoustic holography based on the distributed source boundary point method[J].Acta Physica Sinica,2010,59(12):8646-8654. |
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| Authors: | Bi Chuan-Xing Yuan Yan He Chun-Dong Xu Liang |
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| Institution: | Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China;Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China;Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China;Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | Patch nearfield acoustic holography based on the distributed source boundary point method (DSBPM) is proposed to reduce an error of the reconstructed result obtained from the pressure measured on a small aperture. The extrapolated data on a larger holographic surface is obtained through the measured data on the small holographic surface using the DSBPM, then the extrapolated data is used to reconstruct sound source. The simulation results and the experimental results show that the method can provide a good reconstructed result under the condition of the small holographic aperture. |
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| Keywords: | nearfield acoustic holography boundary point method data extrapolation |
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