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数字滤波器的基本原理、 数字滤波器的设计方法和 数字高通滤波器设计在 上的实现。(This article introduced the digital filter s basic principle, the digital filter s design method and the digit pass the filter design high on realization.)

waveform length feature extraction

this code invert number of a vector

Peaks计算二维光子晶体带隙程序较长用起来还可以(Peaks calculate two-dimensional photonic bandgap program longer can also use them)

说明：  产生LFM信号。生成一个线性调频脉冲 %*Bandwidth——带宽,-表示降调制 %*Pulsewidth——脉宽 %*Samplespeed——采样速率 %Frequncy——中心频率 %Repeatcircle——重复周期 %Delay——延时,-表示超前 %Pulse——行矢量(LFM signal generate. Generate a chirp pulse %*Bandwidth - bandwidth, - denotes down modulation %*Pulsewidth - pulse width %*Samplespeed - sampling rate %Frequncy - center frequency %Repeat cycle %Delay -- delay - indicates lead %Pulse -- line vector)

this is a good book about the numerical methods in matlab . from this book you can learn a lot

DSP windowing function

This is the thwaites method for boundary layer over flat plate . This is an empirical method based on the observation that most laminar boundary layers obey the following relationship .it will help our calculate coefficient drag , velocity over flat plate.

产生一个长为1000的二进制随机序列，“0”的概率为 0.8，”1”的概率为0.2；  对上述数据进行归零AMI编码，脉冲宽度为符号宽度 的50 ，波形采样率为符号率的8倍，画出前20个符 号对应的波形（同时给出前20位信源序列）  改用HDB3码，画出前20个符号对应的波形  改用密勒码，画出前20个符号对应的波形  分别对上述1000个符号的波形进行功率谱估计，画出 功率谱  改变信源“0”的概率，观察AMI码的功率谱变化情况 (Base band signal spectrum)

MATLAB LabVIEW SystemView 仿真分析(MATLAB LabVIEW SystemView SIMULATION)