Open AccessInvestigation on holographic algorithm and experiment of combined wave superposition approach
Author(s) -
Weibing Li,
Jian Chen,
ChuanXing Bi,
Chen Xinzhao
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.1264
Subject(s) - tikhonov regularization , superposition principle , holography , acoustic holography , regularization (linguistics) , physics , acoustic wave equation , inverse problem , acoustics , field (mathematics) , acoustic wave , optics , computer science , algorithm , mathematics , mathematical analysis , artificial intelligence , quantum mechanics , pure mathematics
The general nerar-field acoustic holography (NAH) cannot reconstruct the surface acoustic information of each coherent acoustic source in coherent acoustic field,which has more than one acoustic sources with the same frequency, and they cannot realize holographic reconstruction and prediction of the independent acoustic field generated by one coherent acoustic source too.So the holographic reconstruction and prediction of coherent acoustic field has become the foremost problem to be resolved in the application of NAH. On the basis of the proposed combined wave superposition approach, an experiment is carried out to realize the holographic reconstruction and prediction of a coherent acoustic filed generated by two sound boxes.By this experiment,the feasibility and accuracy of combined wave superposition approach are demonstrated,the shortcoming of general wave superposition approach in holographic construction and prediction of coherent acoustic field are also demonstrated.The Tikhonov regularization method is proposed to control the ill-posedness of inverse acoustic problem, and the principle of filter coefficient selection is also studied.The experiment indicates that Tikhonov regularization method with appropriate filter coefficient can improve the precision of the holographic reconstruction and prediction.