laplacian

说明：  图论算法 求SAP矩阵的基本思想是图的最短路的问题。 由于铁路的运输费用与线路的长度不是线性关系，必须对铁路网做一些预处理才能套用图的标准最短算法。 (SAP matrix graph theory algorithm for getting the basic idea is to map the shortest path problem. Since the railway transport costs and the length of line is not a linear relationship, we must do some preprocessing on the rail network to apply a standard graph algorithm shortest.)

基于功率谱相减的语音消噪增强法程序，采用硬阈值法(Power spectrum subtraction based speech denoising Enhancement Act program, using hard-threshold)

通信理论分析中，产生Nakagami-m 变量的随机数，并与理论PDF和CDF比较，以及第N个最大的Nakagami-m变量的仿真与理论PDFCDF的验证(he random numbers that produce the Nakagami-m variables are compared with the theoretical PDF and CDF, and the Nth Max and PDF/CDF of the largest Nakagami-m variables are verified by simulation and theory.)

MATLAB数学建模工具箱，实用工具集，对在做建模的朋友有帮助(MATLAB toolbox of mathematical modeling, practical tools for doing modeling friends help)

8位相移键控误码率分析的MATLAB程序(8 phase shift keying bit error rate analysis of the MATLAB program)

1． 用Fourier变换算法对图像作二维Fourier变换。 2． 用Fourier反变换算法对图像作二维Fourier反变换。 3． 频域逆滤波和维纳滤波图像复原。 (1. Fourier Transform algorithm for the two-dimensional Fourier transform image. 2. Fourier transform algorithm with anti-dimensional Fourier inverse transform for image. 3. Frequency domain inverse filtering and Wiener filtering image restoration.)

该程序包含震动分析中的许多程序，实现模态分析。(The program contains a number of vibration analysis procedures to achieve the modal analysis.)

Matlab basics to know while writing matlab code.

SIFT算法（尺度不变特征变换）Matlab 程序代码(SIFT algorithm (Scale Invariant Feature Transform) Matlab code)

此程序用于产生直线阵天线阵列的方向性图，非常有价值(This procedure is used for creating a linear array of antenna array pattern)