PID-MATLAB

描述了LFM信号及其回波的仿真技术，matlab环境开发，适合初学者掌握原理性知识(Describes the LFM signal and its echo simulation, matlab environment, development, master the principles of knowledge for beginners)

This is a basic program for quan filter for filtering multiplicative noise it gives reasonable output for speckle noise removal

图论常用算法代码，floyd，tsp的模拟退火算法等。(Used graph theory algorithm code, floyd, tsp of the simulated annealing algorithm.)

采用滑模控制对LORENZE混沌系统进行抑制(Sliding Control To Lorenze Chaos system)

欧拉法求解波动方程, 初始条件c=1m/s,矩形波，x=1-2时，u=2m/s(Euler explicit method to solve wave equation)

说明：  能够很好的解决牛顿插值问题，对于构建差商表的程序给出了解释和说明！！！(Newton interpolation can be a good solution to the problem, divided difference table for building the program and instructions are given to explain! ! !)

用matlab计算图片中圆心的坐标，先进行区域分隔，打标记，再计算各个圆心的坐标，有一定的实用型(calculated using Matlab pictures of the center coordinates first regional segregation, marking, calculate the coordinates of the center of each, to a certain extent practical)

具有良好自相关特性的伪随机序列构造方法，可用来雷达设计研究(sequence design)

In a normal communication channel, it is often desirable to concentrate the information in as narrow a region of the frequency spectrum as possible in order to conserve available bandwidth and to reduce power. The basic spread spectrum technique, on the other hand, is designed to encode a stream of information by spreading the encoded data across as much of the frequency spectrum as possible. This allows the signal reception, even if there is interference on some frequencies. While there are many variations on spread spectrum communication, we concentrated on Direct Sequence Spread Spectrum encoding (DSSS). The DSSS method spreads the signal by multiplying it by a chip, a maximal length pseudorandom sequence modulated at a known rate. Since the host signals are in discrete-time format, we can use the sampling rate as the chip rate for coding.

程序为相关干涉仪测向方法的matlab仿真。以5元圆天线阵列为接收阵列，计算两元间的相位差，形成标准库，并通过相关的方式测得信号来波方向。(Matlab simulation of the program for the direction finding method of correlation interferometer. With 5 yuan of circular antenna array for receiving array, calculate the phase difference between the two, the formation of the standard library, and through the measured signal wave direction. )