u6

这个函数提供灰度拉伸功能，输入图像应当是灰度图像，但如果提供的不是灰度图像的话，函数会自动将图像转化为灰度形式。x1，x2，y1，y2应当使用双精度类型存储，图像矩阵可以使用任何MATLAB支持的类型存储。(This function provides a gray scale stretching function of the input image should be grayscale image, but if not provided, then gray image, the function will automatically be converted to grayscale image form. x1, x2, y1, y2 should use double precision storage, image matrix can store any type of MATLAB support.)

PAM误码率的程序,可以直接运行,有图片(PAM error rate of the procedure, can be directly run, there are picture)

数学建模经典问题轮船调配问题，详细解答了各个问题，并附有轮船到达的模拟程序(Mathematical modeling of the classic problems ship deployment issues, detailed answers to each question, along with the ship arrived simulation program)

用matlab产生不同的波型，对其进行FFT 功率谱，对数谱然后用IFFT进行反变换(Using matlab produce different wave type, its FFT power spectrum, the spectrum and then use the IFFT to inverse transform)

说明：  这是一篇有关无线连接OFDM信道模型的文章，里面有仿真程序，我调过了，很好用！(This is one of the wireless connectivity OFDM channel model articles, there are simulation program, I emphasized that good use!)

mk突变点分析； 输入：x是数据序列；sy是起始年份或序号（做图的时候会用到）(mk point mutation analysis Input: x is a data sequence sy is the initial year or serial number (do figure it will be used))

基于改进差分演化算法的石油层评价指标的特征选择(Feature improved oil layer evaluation based on differential evolution algorithm choice)

书名：基于MATLAB的嵌入式系统软件开发(Title: MATLAB-based software development of embedded systems)

matlab基础知识PPT，非常受用，适合初学者，上手容易(Matlab basic knowledge PPT, is very useful, is suitable for beginners, easy to get)

系统辨识AIC定阶法，用于进行模型阶次辨识(AIC fixed-order system identification method, used for model order identification)