Based on the prime radix DFT and number theory, an algorithm using the second order recursive filter and the zero factor prime radix Fourier Transform (ZFT) is presented.
从素基数DFT出发，应用数论理论讨论了一种应用二阶递归滤波结构的算法及零因子转换算法(ZFT)。
An algorithm which USES output of the Fourier filter to measure power system frequency is presented.
提出了一种利用富氏滤波器的输出测量电力系统频率的算法。
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