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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)

matlab/simulink编写RS232串口调试程序(to write the RS232 serial communication program by matlab/simulink)

using wavelet in denoising ECG

function Px = per(x,n1,n2) PER Estimate the spectrum of a process using the periodogram ----------- USAGE Px = per(x,n1,n2) The spectrum of a process x is estimated using the periodogram. x : input sequence n1 : starting index, x(n1) n2 : ending index, x(n2) The periodogram is returned in Px using a linear scale. If n1 and n2 are not specified the periodogram of the entire sequence is computed.

卡尔曼滤波是一种高效率的递归滤波器(自回归滤波器), 它能够从一系列的不完全包含噪声的测量(英文:measurement)中，估计动态系统的状态。 (Kalman Filter is a highly efficient recursive filter (autoregressive filter), It can complete a series of noise measurements included (in English : measurement). Dynamic System estimated the state.)

对后项散射去噪声 对目标进行水下去噪处理 (The latter scattering noise underwater target denoising)

这个文件是，opendss与matlab交互编程的标准示例，可以帮助学习者更快的掌握opendss与matlab的交互(This file is a standard example opendss interact with matlab programming, can help learners to quickly grasp the interaction with the matlab opendss)

Matlab实验，程序以及解答方法及仿真结果(experiment of matlab)

MatLab 几个GUI界面的切换，很简单原理很好理解，会了一个多个就不成问题了，下载后需要建立俩个GUI名字为wenjian和Help_gui.(Switching MatLab several GUI interface, very simple principle well understood, would be a more than one is not a problem, after downloading the need to establish both a GUI named wenjian and Help_gui.)

matlab implementation of a function that calculate canny edge