The result of Discrete Fourier Transform(DFT) in asynchronous sampling is not accurate and can not satisfy the requirement of synchronized phasor measurements,due to spectral leakage and barrier effect.

• 在异步采样的情况下,离散傅里叶变换(DFT)由于频谱泄漏及栅栏效应,计算结果不够精确,不能满足同步相量测量精度的要求。