assign2

，用MATLAB实现快跳频通信系统的仿真。主要应用了SIMULINK和COMMUNICATION BLOCKETS两个模块。整个设计包括了信源产生部分、发送部分、跳频调制部分、信道部分、接收部分和结果分析部分共六个模块，核心技术是伪随机序列的产生和频率合成器的设计，而关键技术是收发两端的伪随机码元的同步。伪随机码的产生用S－函数编程来开发自己的SIMULINK模块。同步的实现是收发两端采用相同的扩频脉冲触发。而且在设计中每个模块都采用了模块封装技术，从而简化了框图结构(Using MATLAB to achieve fast frequency-hopping communication system simulation. The main use of SIMULINK and COMMUNICATION BLOCKETS two modules. The whole design, including part of the generated source, sending part of some frequency-hopping modulation, channel of the receiving part and the results of analysis of part of a total of six modules, the core technology is the emergence of pseudo-random sequence and frequency synthesizer design, and the key technology is the transceivers at both ends of the pseudo-random synchronization symbol. Pseudo-random code generated by S-function programming to develop their own modules SIMULINK. Synchronization is used to send and receive ends of the same spread-spectrum pulse trigger. But also in the design of each module using the module packaging technology, which simplifies the structure of the diagram)

Lucas – Kanade Motion Estimation using Pyramids (视频,运动估计)(Lucas-Kanade Motion Estimation using harvested amids (video, motion estimation))

功率谱估计基本算法，包括Bartlett，welch等(Power spectrum estimation)

使用matlab来处理各种格式的数字图像(use matlab to process image)

This file include very useful matlab code to CDMA communication

卡尔曼滤波工具包，包括网络的配置，与节点的确定。(Kalman filter kit，Including the network configuration，and the determination of nodes )

多载波调试的正交频分复用技术 包括正交振幅键控技术 四相相移键控信号等其它技术 其误码率在千分之几数量级 非常实用(Multi-carrier debugging orthogonal frequency division multiplexing quadrature amplitude shift keying technology quadrature phase shift keying signal other technologies, such as the bit error rate is very useful in a few thousandths of magnitude)

去趋势波动分析，用于信号分析，可以用于信号去噪，检测信号序列的相关性，内有源码及参考资料一篇(DFA analysis is used to analysis the signal.besides,it can also be used to test the conssitency of the input signal series.)

Its about cryptography example. useful for chatting with some sort of security

利用MATLAB仿真小斜视角情况下理想点目标的合成孔径雷达回波数据，并利用RDA算法进行点目标成像。(the echo data of the ideal point target from small oblique Angle is simulated, and the target image is obtained by using RDA.)