该文件包含基于时域的FFT程序和基于频域的FFT程序，可以作为一个模块应用到实际的系统中去。-This file contains procedures based on time domain FFT frequency domain FFT-based procedure can be used as a module into practice the system to.

计算电磁学中应用fdtd（有限时域差分法）计算谐振腔的程序。- Computation electromagnetics application fdtd program to calculate the resonator

处理信号的时频分析，详细画出了时域和频域的相关图，应用小区域方差对比，程序简单。- When processing a signal frequency analysis, Correlation diagram shown in detail the time domain and frequency domain, Application of small area variance comparison, simple procedures.

给出了矩形域上分形插值数学模型, 分形插值曲面的 MATLAB 程序 对程序中的主要变量进行了说明, 并应用实际数据进行了分形插值曲面的实例研究(The mathematical model of fractal interpolation on the rectangular domain and the MATLAB program of fractal interpolation surface are given. The main variables in th