New-folder-4

采用标量衍射理论，实现菲涅尔衍射和夫琅禾费衍射，对光波的波前传播和数字全息的应用有帮助。(Using scalar diffraction theory, Fresnel diffraction and the realization of Fraunhofer diffraction of light waves of wave-front propagation and the application of digital holography to help.)

通信行业中的扩频通信技术使用广泛，该文档主要介绍有关扩频通信的相关知识。(communication sectors of the use of spread-spectrum communication technology widely, the document introduces the spread spectrum communication related knowledge.)

Basic top gravity scenario, nothing fancy. Items do not fill the screen.

This model is very much useful in converting the normal three phase voltages to the corresponding alpha beta components

用matlab制作的小球的平抛运动动画，实现竖直方向速度表示(Ball produced using matlab the flat projectile motion animation, the vertical direction, speed)

说明：  粒子滤波、无迹粒子滤波算法程序，高斯混合模型参数设置等详细代码(Particle filter, unscented particle filter program, Gaussian mixture model parameter settings, and more code)

分别采用4种控制律进行单神经元PID控制,即无监督的Hebb学习规则、有监督的Delta学习规则、有监督的Hebb学习规则、改进的Hebb学习规则.(Separately using four kinds of control laws for single neuron PID control, that is, unsupervised Hebb learning rules, there is the Delta Study supervision rules, there is supervised Hebb learning rule to improve the Hebb learning rule.)

Image Processing toolbox - Average filter(Image Processing toolbox- Average filter)

本模型可用于计算晴天下北半球任意地区任意角度下集热器太阳日辐射强度(Any angle collector solar radiation calculation model)

Ⅰ层模型声波波场数值的有限差分模拟程序，可自行下载研究( finite difference method)