在图像灰度分布互相关和快速傅立叶变换的基础上，研究了粒子图像测速的实现。
On the basis of image cross correlation of brightness distribution and Fast Fourier Translation, the implementation of Particle image Velocimetry was studied.
用波数域的位场转换和快速傅立叶变换理论研究重力归一化总梯度和归一化相位；
The normalized full gradient and phase of gravity anomalies have been studied by potential field conversion and fast Fourier transform in wave-number domain.
数字信号处理器(dsp)是鉴于数字滤波和快速傅立叶变换的数字信号处理技术。
Digital signal processor (DSP) is used to meet the need of digital signal processing technique, such as digital filer and FFT.
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