| Landweber iterative regularization for nearfield acoustic holography |
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| 引用本文： | BI Chuanxing CHEN Xinzhao ZHOU Rong CHEN Jian. Landweber iterative regularization for nearfield acoustic holography[J]. 科学通报(英文版), 2006, 51(11): 1374-1380. DOI: 10.1007/s11434-006-1374-z |
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| 作者姓名： | BI Chuanxing CHEN Xinzhao ZHOU Rong CHEN Jian |
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| 作者单位： | Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China （Grant No. 10504006） and the Research Fund for the Doctoral Program of Higher Education （Grant No. 20020359005）. |
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| 摘 要： | In the past twenty years, nearfield acoustic holography (NAH) has become an efficient tool for noise source identification, noise source localization and acoustic field visualization. By measuring the complex pressure or particle velocity on a hologram su…
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| 关 键 词： | 近场声全息摄影术 迭代方法 边界点方法 正则化 |
| 收稿时间： | 2005-08-29 |
| 修稿时间： | 2005-08-292005-11-22 |
Landweber iterative regularization for nearfield acoustic holography |
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| Chuanxing Bi,Xinzhao Chen,Rong Zhou,Jian Chen. Landweber iterative regularization for nearfield acoustic holography[J]. Chinese science bulletin, 2006, 51(11): 1374-1380. DOI: 10.1007/s11434-006-1374-z |
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| Authors: | Chuanxing Bi Xinzhao Chen Rong Zhou Jian Chen |
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| Affiliation: | (1) Institute of Sound and Vibration Research, Hefei University of Technology, Hefei, 230009, China |
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| Abstract: | On the basis of the distributed source boundary point method (DSBPM)-based nearfield acoustic holography (NAH), Landweber iterative regularization method is proposed to stabilize the NAH reconstruction process, control the influence of measurement errors on the reconstructed results and ensure the validity of the reconstructed results. And a new method, the auxiliary surface method, is pro- posed to determine the optimal iterative number for optimizing the regularization effect. Here, the optimal number is determined by minimizing the relative error between the calculated pressure on the auxiliary surface corresponding to each iterative number and the measured pressure. An experiment on a speaker is investigated to demonstrate the high sensitivity of the reconstructed results to measurement errors and to validate the chosen method of the optimal iterative number and the Landweber iterative regularization method for controlling the influence of measurement errors on the reconstructed results. |
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| Keywords: | nearfield acoustic holography iterative method bound- ary point method regularization. |
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