EXPERIMENT STUDY OF MEASUREMENT POINT REDUCTION ON HOLOGRAM USING SUPPORT VECTOR REGRESSION

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Journal of Vibration and Shock ›› 2010, Vol. 29 ›› Issue (3) : 128-131,.

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EXPERIMENT STUDY OF MEASUREMENT POINT REDUCTION ON HOLOGRAM USING SUPPORT VECTOR REGRESSION

Mao Rongfu1; Zhu Haichao1; Liu Zhizhong2; Du Xianghua1

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Abstract

In near-field acoustic holography (NAH), accurate reconstruction requires dense measurement grid on large hologram, a huge number of microphones are demanded. It is significant to find a way to reduce the microphone number effectively while keeping high reconstruction accuracy in NAH implementation. On the basis of previous work, a hologram interpolation approach based on Support Vector Regression (SVR) was presented in this paper. Reconstruction accuracy can be improved significantly with small number of microphones. Therefore, a great number of measurement points can be reduced. At last, the presented approach is validated by experiment.

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near-field acoustic holography / support vector regression / interpolation / reconstruction accuracy

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Mao Rongfu;Zhu Haichao;Liu Zhizhong;Du Xianghua. EXPERIMENT STUDY OF MEASUREMENT POINT REDUCTION ON HOLOGRAM USING SUPPORT VECTOR REGRESSION [J]. Journal of Vibration and Shock, 2010, 29(3): 128-131,