DTFT

说明：  巴特沃斯滤波器，可以通过它对受噪声干扰的图像进行平滑处理(Butterworth filter, can be affected by its image noise smoothing)

说明：  开普勒公式卫星轨道模拟 以及 左边转换函数 ECI2ECEF LGCV2ECEF等等(Simulation of orbital motion by solving Keplerian equation)

this source is very helpfull for technology student, who is the first in programming with matlab,

实现大点数的IFFT变换，先进行小点数IFFT变化，然后再进行过采样滤波，有频谱图及例子(Achieve great points IFFT transform, first have a small point IFFT change, and then over-sampling filter, a spectrum and examples)

svr for prediction and forecasting

Program for interpolation facial image

用于关联成像（鬼成像）的一维仿真模拟matlab程序源码。(One-dimensional simulation matlab program source code for the associated imaging (ghost imaging).)

matlab中PDE工具箱的帮助文件pde.pdf的例子全部用代码实现,花了我一个月的时间,有限元应用程序(matlab in PDE toolbox pde.pdf Help file with examples of all the code, I spent a month s time, the finite element applications)

FIR低通滤波器设计,表达得还比较详细，可以借鉴参考(FIR low-pass filter design, is also expressed in more detail, you can learn from the reference)

ber for bpsk modulation