chap3

迭代最近点算法的matlab源码，可以实现对3维点数据的对齐(Iterative nearest point algorithm matlab source code, you can realize 3-dimensional data on the alignment)

Code to find speech ending using rabiner method

plot figure with two y axes

简单的粒子群算法，matlabR2010b测试可以使用，对于初学者是很好的程序(Simple particle swarm optimization algorithm, the matlabR2010b test can be used, for beginners is a very good program.)

通过计算短时信号熵，与阈值比较，得到判决结果。并采用顺序统计滤波器（最大值滤波器）对所得熵值滤波，提高判决精度。 能有效的分辨出语音信号和噪声信号，且通过后端平滑处理，使语音检测结果更加集中。(VAD based on short-time entropy, precision improved by using order-statistical-filter, VAD result is smoothed to make the result more accurate.)

blasius problem to find the skin friction

FILE SIMULATION SIMULINK HELP

单相光伏电流双环控制模型，电流内环加电压外环，测试通过直接运行(Single phase photovoltaic current dual loop control model)

直接序列扩频通信系统的仿真，信道中加入高斯白噪声，扩频比为512，调制方式为BPSK。扩频序列可选m序列或者Gold序列，编码方式可选不编码或者卷积编码。(Simulation of direct sequence spread spectrum communication system, the channel joined the Gaussian white noise, the spreading ratio is 512, the modulation scheme is BPSK. Spreading sequences m sequence or Gold sequence selectable, optional coding or non-coding convolution coding.)

基于凸优化算法，频率分集阵列天线在全时空域内可控点聚焦，实现对动目标追踪、多目标聚焦，可用于实现点对点秘密通信(Based on convex optimization algorithm, the frequency diversity array antenna can focus on controllable points in the whole time and space domain, and can be used to realize point to point secret communication.)