We also use short time Fourier transforms to analyze the spectrum of the scattered wave during the propagation process, and obtain some useful results.
并用短时傅立叶变换分析了声波传播过程中晶粒散射波的频谱特性。获得了一些有用结果。
Application result shows that fast Fourier transforms should be adopted in on-line monitoring...
实践应用表明,在在线监测系统中应采用快速傅立叶变换算法。
It is hard to implement complex-order Fourier transforms for general complex ABCD optical systems, because of the severe conditions.
大多数的复abcd光学系统无法实现复数阶傅立叶变换。
The Fresnel diffraction formula and the Fourier transforms are used to get the intensity distribution formula.
采用菲涅耳衍射公式和傅里叶变换得出了输出面上的光场的理想计算公式。
In this paper, the finite double Fourier transforms were applied to solve the nonhomogeneous boundary value problems of the wave, heat conduction, Laplace and Poisson equations.
本文用有限的二重傅里叶变换解波动方程,热传导方程,拉普拉斯方程以及泊松方程的非齐次边值问题。
The course has no specific prerequisites, although a basic knowledge of Fourier transforms is recommended.
虽然需要一些傅立叶变换的基本知识,但这门课程没有具体的先修课。
In this paper, the convolution integrals of the shifting functions and their Fourier transforms are studied in detail, and some important conclusions are obtained.
本文研究了移位函数的卷积积分及其傅里叶变换,得出了一些重要的结论,其中部分结论在信号与系统的研究中具有一定的实用价值。