problem3

说明：  Welch法功率谱密度 Psd自功率谱 是用改进的平均周期图法来求随机信号的自功率谱估计 采用信号重叠分段，加窗函数和fft算法等计算一个信号的自功率谱估计（PSD）

对于搞图像分析和机器视觉的同志是一本很不错的书籍(usefull to these peple who major inmachine vision and imaging process)

Forward Backward Propogation in Information Form

计算机控制工程二阶系统最小拍无纹波matlab实现算法 (Computer control engineering second-order system minimum beat no ripple algorithm matlab)

将输入的RGB图像分层，并将指定层加强 ( )

电弧模型,可以很好的看电弧电流和电压，参数可以修改，matlab的simulink编程得到的，适合初学者学习(Arc model, can see arc current and voltage, parameters can be modified, matlab simulink programming, suitable for beginners to learn)

eye pattern, also known as an eye diagram, is an oscilloscope display in which a digital data signal from a receiver is repetitively sampled and applied to the vertical input, while the data rate is used to trigger the horizontal sweep. It is so called because, for several types of coding, the pattern looks like a series of eyes between a pair of rails. It is an experimental tool for the evaluation of the combined effects of channel noise and intersymbol interference on the performance of a baseband pulse-transmission system. It is the synchronised superposition of all possible realisations of the signal of interest viewed within a particular signalling interval.

说明：  卫星天线升线,保证能看外国台,是我用了三个月的时间编写而成,是我们学习卫星天线设计的理想程序(Satellite antenna booster line, guaranteed to see a foreign station, I spent three months been prepared by the satellite antenna design is the ideal learning program)

这是一个很好的matlab精对准的详细程序(This is a matlab fine alignment program)

2 step taylor galerkin algorithm