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Bi Chuanxing
Chen Xinzhao
Zhou Rong
Chen Jian
Institute of Sound and Vibration
Research,
Hefei University of Technology,
Hefei 230009, China |
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RECONSTRUCTION
STABILITY OF NE-
ARFIELD ACOUSTIC
HOLOGRAPHY*
Abstract:
The distributed source boundary point method (DSBPM) is used as the spatial transform algorithm for realizing nearfield acoustic holography (NAH), the sensitivity of the reconstructed solution to the measurement errors is analyzed, and the regularization method is proposed to stabilize the reconstruction process, control the influence of the measurement errors and get a better approximate solution. An oscillating sphere is investigated as a numerical example, the influence of the measurement errors on the reconstruction solution is demonstrated, and the feasibility and validity of the regularization method are validated.
Key words:
Acoustic holography Boundary point method Inverse problem Regularization |