因此，根据傅里叶变换的共轭对称性，提出了更具有一般性的长方环傅里叶周向谱能量百分比新算法。

So a new algorithm with rectangle loops Fourier spectral energy percentage is proposed by analyzing the conjugate symmetry of Fourier transform.

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给出了频域抽取二维向量基快速傅里叶变换算法，针对二维频域信号采用频域抽取方法，导出了该快速算法蝶形运算的一般形式并给出了算法实现流程图。

In accordance with the requirements of high speed digital signal processing, the algorithm of radix-4 implemented with FPGA and the integrated architecture and butterfly unit are analyzed.

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