The Rife—Vincent(Ⅲ) window interpolation FFT algorithm by using cubic spline function

A novel method of reactive power measurement based on interpolation FFT algorithm refactoring Hilbert transformation

In order to reduce the influence of an unsynchronized sample sequence on FFT and to improve the precision of harmonic in power system,a harmonic estimation based on interpolation FFT algorithm is proposed.

In order to suppress oscillatory artifacts which occur in the super resolution image reconstructed with the FFT interpolation method, the cause and condition of the presence of oscillatory artifacts are thoroughly analyzed in this paper.

This paper analyzes the problem existing in the conventional harmonic analysis method,investigates two digital arithmetic-hanning-windowed interpolated FFT and wavelet analysis method for dielectric loss measurements,and contrastes their advantages and disadvantages.

This paper introduces the methods used in dielectric loss measurement and the problem of conventional Harmonic Analysis method in dielectric loss measurement,and analyzes the improved dielectric loss measurement algorithm: Hanning-windowed interpolated FFT algorithm,and validates it with simulation experiment and field measurement.