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Rectifying Technique of Spectrum Analysis

Xie Ming; Ding Kang (Automobile Engineering Department, Chongqing University Chongqing, 630044)  
his paper puts forward a new method which can rectify the spectrum peak value of amplitude spectrum in order to decrease the errors that exist when the spectrum line is not on the peak position. The method uses the center of gravity of the spectrum peak main-band to get the coordinates of the peak value so that the accurate frequency. amplitude.and phase of the spectrum peak are obtained. The rectifying precision can reach a zoom of 1,000 times.
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