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《Electronic Measurement Technology》 2009-01
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Wavelet transform threshold noise reduction methods and the application in automatic rifle

Lin Yuan1 Xiao Feng2 Zheng Bin1 Hou Wen1(1 National Key Laboratory For Electronic Measurement Technology,Taiyuan 030051;2.No.208 Research Institute of China Ordnance Industries;Beijing 102202)  
Researches the principle and method of the noise reduction based on wavelet transform,chooses the threshold noise reduction,and describes in detail the principles,features and design steps of the threshold method by means of the wavelet analysis toolbox of MatLAB.Rigrsure,default threshold noise reduction,forcible threshold noise reduction,bestowal threshold noise reduction three kinds of methods,and,rigrsure,heursure,sqtwolog and minimaxi four kinds of threshold selection methods are compared qualitatively and quantitatively.Realizes computer simulation of the signal noise reduction.When dealing with the actual signal of the automatic rifle,heursure and rigrsure threshold method of bestowal threshold noise reduction shows more effective to eliminate noise.
【CateGory Index】: E920
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