此外，在伪谱法中引入匹配层边界条件后，只需对空间做一维傅里叶变换，大大提高了伪谱法的计算效率。
With the matched layer boundary conditions being introduced, only the 1-D Fourier transform in space is needed for the PS method, greatly improving the computational efficiency.
提出了一种基于二维短时傅里叶变换的干涉相位图解缠方法。
A two-dimensional phase unwrapping approach based on two-dimensional windowed Fourier transform (WFT) is proposed.
傅里叶变换轮廓术是属于主动式光学三维测量方法中的一种。其测量精度较高，且数据采集速度快。
Fourier transform profilometry is one of the most popular active 3d optical measurement methods, with the advantage of high accuracy and fast acquisition speed.
而傅里叶变换轮廓术作为一种主动光学三维形貌测量技术，因其只需要一幅变形光栅图样来做全场分析的优点，而受到人们广泛关注。
The Fourier transform profilometry as an active optical 3d shape measurement technology has been widely concerned because it need only one deformed grating image to make full-field analysis.
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.
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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