Biometric-Testing

用c语言编写了matlab中的extrema函数~ 功能 输出一个离散信号的极大值，极小值及其他们的位置~(C language extrema in matlab function to function great value, minimum value of output a discrete signal their location ~)

Les méthodes géométriques sont les méthodes les plus répandues en simulation indoor. On a cité les principales familles de ces méthodes. Il s’avère qu’il n’existe pas de meilleures méthodes que d autres. En effet, le choix d’une méthode par rapport à une autre dépend des objectifs principaux qui sont fixés au début du travail. Il est donc fondamental de faire un compromis entre le nombre de rayons à calculer et la complexité de calcul.

数据链路层滑动窗口协议的设计与实现源码 信道模型为8000bps 全双工卫星信道，信道传播时延270 毫秒，信道误码率为10-5，信道提供字节流传输服务，网络层分组长度在240~256字节范围。(Sliding window data link layer protocol design and implementation of source-channel model 8000bps full-duplex satellite channel, the channel propagation delay 270 ms, the channel bit error rate of 10-5, the channel provides a byte stream transfer service, network layer packet length in the range of 240 to 256 bytes.)

By analyzing characteristics of Matlab and Visual C++,the advantages of applying the Matlab and Visual C++ interface to develop application program is presented. On basis of comparing with the other interface methods ,the advantages and disadvantages of several common interfaces are studied,and the most functions provided by Matlab engine is proved to be comprehensive. An example showing the combination of Matlab and VC in image and data processing is proposed

例3：分析占空比为ta的矩形脉冲频谱 T=1 时间窗大小 ta=0.5 占空比 N=256 t=linspace(-T,T,N) ts=2*T/N fs=1/ts (x=zeros(1,N) x(N/2-round(N/2*ta):N/2+round(N/2*ta))=ones(1,2*round(N/2*ta)+1) y=fft(x,N) figure plot(t,x) title([ 时域信号图 占空比为 ,num2str(ta)]) axis([-T T-0.2 1.2]) xlabel( t /s ) figure subplot(211) f=linspace(-fs/2,fs/2,N) plot(f,abs(fftshift(y))/N) title([ 矩形脉冲双边谱 脉冲时间t=[- ,num2str(ta*T), , ,num2str(ta*T), ] ]) xlabel( f /Hz ) )

IT++ is a C++ library of mathematical, signal processing and communication routines.

PSCAD风电场建模（PMSG永磁同步发电机） 及发电机的矢量控制(Vector Control PSCAD wind farm modeling (PMSG permanent magnet synchronous generator) and generators)

关于铁路轨道激光平顺度检查仪的使用说明，对仪器功能、使用范围和注意事项进行了详细说明。(On the railway track laser smoothness tester instructions, the instrument features, application scope and matters needing attention are discussed in detail.)

哈夫曼编码解码器，在matlab环境下实现的编码解码，希望对大家有用(Huffman codec in matlab environment to achieve the encoding and decoding, we hope to be useful)

this is a web application for mobile collabartive learning application