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CONVERT IMG TO CURVE IN MATLAB

由设计要求可知，wp<=0.2π，允许误差幅度小于1dB，ws>=0.3π内衰减应大于15dB。为了验证数字滤波器的实际滤波功能，设计程序时，把输入序列定为验证函数x（t）=4sin（100πt）以及x（t）=4sin（200πt）和x（t）=4sin（400πt）。又因为Ts=1.25ms，T=80ms，故采样点为64，即N=64，所以当M=6，可以同时调试并验证程序的滤波功能。(Seen by the design requirements, wp < = 0.2π, allow a margin of error of less than 1dB, ws> = 0.3π within attenuation greater than 15dB. In order to verify the actual filtering function of the digital filter design program, the input sequence as validation function x (t) = 4sin (100πt) and x (t) = 4sin (200πt) and x (t) = 4sin (400πt) . And because Ts = 1.25ms, T = 80ms, so the sampling points is 64, that is N = 64, so when M = 6, can debug and validate filtering program.)

matlab code for readind accelerogram files,useful for seismologists

丘陵地形的matlab仿真模型，可以用与航迹规划算法的研究。(Hilly terrain matlab simulation model can be used with the route planning algorithm.)

分支界限法求解整数规划，matlab 分支界限法求解整数规划，matlab(branch and cut with matlab )

matlab编程进行离心叶轮一维初始参数计算(matlab programming centrifugal impeller one-dimensional initial parameter calculation)

说明：  BP neural network for classification of data-voice signal classification

使用脉冲响应不变法实现巴特沃兹低通滤波器(Butterworth low-pass filter impulse response invariance)

阵列天线设计，提供方向图示意，计算阻抗等，很适用于初学者(array antenna design)

四种迭代产生混沌序列的代码，基于logistic映射(Generate chaotic sequence of four iterations of code, based on logistic map)