%0 Journal Article
%T TWO-EXPOSURE HOLOGRAPHY FOR STUDY OF SHOCKWAVE FLOW GENERATED BY A MODEL IN A SUPERSONIC WIND CHANNEL<br>双曝光全息干涉法用于风洞中激波流场的研究
%A Wang Jiangang
%A Miao Xinghua
%A Wang Guozhi
%A Ji Zhongying
%A Yan Qian
%A <br>王建岗
%A 罗景山
%J 光子学报
%D 1997
%I 
%X This article discusses the application of two-exposure holography to study shockwave flow.For irregular models,the numerical calculation of its shockwave flow is almost impossible, the experimentally quantitative measurement of the flow is particularly important. The paper successfully resolves the measurement problem of the shockwave flow generated by a certain irregular model in a supersonic wind channel,its finite-fringe hologram is obtained,by use of image processing technology,the hologram is skeletonized,and then fringe shift amount data are collected in man-computer fashion.Finally the density distribution of the flow is given through Laplacian transform method.
%K Two-exposure holographyI Shockwave flow: Image processing
%K Laplacian transform method<br>双曝光全息干涉
%K 激波流场
%K 图象处理
%K 风洞实验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=A18B90ADAADB0CFB83263534180B944B&yid=5370399DC954B911&vid=96C778EE049EE47D&iid=E158A972A605785F&sid=F4BDB5452F9F5642&eid=73648F51F187AC5E&journal_id=1004-4213&journal_name=光子学报&referenced_num=3&reference_num=3