| 基于支持向量回归外推的统计最优近场声全息研究 |
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| 引用本文： | 杜向华,朱海潮,毛荣富,朱海鹏.基于支持向量回归外推的统计最优近场声全息研究[J].声学技术,2011(5):383-386. |
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| 作者姓名： | 杜向华 朱海潮 毛荣富 朱海鹏 |
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| 作者单位： | 海军工程大学振动与噪声研究所; |
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| 摘 要： | 通过数值仿真方法,研究统计最优近场声全息中全息面孔径大小对重建精度影响。结果表明当全息面孔径大于重建面孔径2个采样间隔便能获得较高的重建精度,再继续增大全息面孔径也可以提高重建精度,但是趋势变缓。在此基础上,进一步提出了一种利用支持向量回归对全息面孔径进行外推的方法,在不增加测量孔径的前提下,可以通过数据外推增大全息面孔径,提高重建精度。对方形简支钢板辐射声场的仿真结果,验证了方法的有效性。
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| 关 键 词： | 统计最优近场声全息 支持向量回归 全息数据外推 |
| 收稿时间： | 2010/11/22 0:00:00 |
| 修稿时间： | 2011/1/31 0:00:00 |
Study of statistically optimized near-field acoustical holography based on hologram data extrapolation with support vector regression |
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| DU Xiang-hu,ZHU Hai-chao,MAO Rong-fu and ZHU Hai-peng.Study of statistically optimized near-field acoustical holography based on hologram data extrapolation with support vector regression[J].Technical Acoustics,2011(5):383-386. |
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| Authors: | DU Xiang-hu ZHU Hai-chao MAO Rong-fu and ZHU Hai-peng |
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| Affiliation: | DU Xiang-hua,ZHU Hai-chao,MAO Rong-fu,ZHU Hai-peng (Institute of Noise and Vibration,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | The influence of hologram aperture on reconstruction precision is studied in detail by numerical simulation.In statistically optimized near-field acoustical holography,when the hologram aperture is 2 sample intervals bigger than reconstruction plane aperture,it achieves a satisfied accuracy.If the hologram aperture increases after that,the reconstruction accuracy grows slowly.Base on the result,a data extrapolation method based on support vector regression is presented.By using the extrapolated hologram dat... |
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| Keywords: | statistically optimized near field acoustic holography support vector regression hologram data extrapolation |
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