Research of dielectric loss measurement method of wiener filtering and windowed Harmonics analysis based on wavelet transform

Aiming at the error of measuring dielectric loss angle in decrease Signal-to-Noise Ratio by windowed Harmonics analysis method, easy to cover up real value. It shares the dielectric loss measurement method based on wiener filtering of wavelet transform region. Via the excellent time-frequency analysis tools of wavelet transform, we pick-up basal frequency signal. And we calculate dielectric loss measurement angel by windowed Harmonics analysis method. Emulation result indicate that the method will increase measuring veracity more.