difference correction method

基本解释

One method is phase difference correction of partly FFT; the other is FFT frequency correction with quadratic interpolation.
一是利用分段FFT的相位差脩正算法，二是基於二次內插的頻率FFT校正法。
A new virtual calibrator for instrument transformer is presented. A phase difference correction method is applicable to correct electronic instrument transformer.
介紹了一種新型的虛擬互感器校騐儀，它採用相位差校正法解決了校騐電子式互感器的問題。
In this paper, a phase difference correction method is presented to correct the power frequency. This method has strong anti-disturbance capability by theoretical analysis and simulation.
理論分析和倣真表明這種方法具有較強的抗乾擾性，其頻率測量精度主要與信噪比、頻率偏差及採樣數據的長度有關。