频谱分析的校正方法

Rectifying Technique of Spectrum Analysis

本文提出了一种对幅值进行校正的新方法，以解决离散频谱当谱峰谱线没有对正峰顶时所带来的误差。该方法首次利用谱峰主瓣内谱线的重心求出峰顶的坐标，可得到准确频率、幅值和相位。其校正业可达细化１０００倍左右的效果。

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.