Hamm_dual_rat

说明：  伪随机码或称PN码，是扩频通信中不可缺少的一种序列。扩频通信，简单的说来就是通过一组相关性很强的伪随机序列，使原有的信号按照伪随机序列的特性出现。从波形上看，原有信号完全淹没于随机的噪声中，达到隐藏信号和抗干扰的目的。接受方只要有相同的伪随机序列，就可以通过伪随机序列很强的相关性将信号还原出来。而m序列，是扩频系统中最长用的伪随机序列。下面的代码就是基于matlab的生成m序列的代码，通过改变初始多项式的值，就可以生成不同阶数的m序列。(Pseudo-random code or PN code, spread spectrum communication is indispensable to a sequence. Spread spectrum communication, a simple to say that the adoption of a group of highly related to pseudo-random sequence, so that the original signal in accordance with the characteristics of pseudo-random sequence there. From the wave point of view, the original signal completely submerged in the random noise to hide the purpose of signal and interference. As long as the recipient has the same pseudo-random sequence, the pseudo-random sequence can be a strong correlation to restore the signal out. And m sequence spread spectrum system is the longest of the pseudo-random sequence used. The following code is generated based on m sequences of matlab code, by changing the value of the initial polynomial, we can generate a different order of the m sequence.)

MImo detector , very useful for student

This program shows how convolution works, going through all the steps of exactly what gets added up and multiplied with what. It also explains from the ground-up how to do for-loops in Matlab. (By the way, if you want to see an example of how to "vectorise" code to avoid for-loops altogether, look at the bkprop.m program in my

时变信道的频率选择性和时变性。系统的输入是一个BPSK信号。系统的时变特性使BPSK信号作为时间的函数，发生衰减和相位旋转。(Time-varying channel frequency selectivity and time variability. Input to the system is a BPSK signal. System is time-varying characteristics make BPSK signal as a function of time, the occurrence of attenuation and phase rotation.)

贝叶斯分类器 模式识别（电子工业出版社）源代码(Bayesian classifier ..........)

雷达基础导论，雷达监测，雷达波形，雷达模糊函数，脉冲压缩，面杂波与体杂波，动目标显示和杂波抑制，相控阵，目标跟踪，电子对抗，雷达截面积，高分辨率战术合成孔径雷达，信号处理。(MATLAB Simulation for Radar System Design)

说明：  此文件包含了zoom-fft算法语言，结果与FFT对比图片输出(This file contains ZOOM-FFT algorithm language, the results are compared with FFT image output.)

数学公式模型的仿真，在matlab环境下把数学公式的图像画出来(Math model simulation, in the matlab environment, the mathematical formulas drawn images)

MATLAB实现的移位寄存器，可以很容易在网上找到框图，原理也很简单，适合初学者参考。(MATLAB implementation of the shift register, you can easily find online diagram, the principle is very simple, suitable for beginners reference.)

说明：  将以下代码加入HEML的<body></body>之间：[第2步的下面位置] <!-- 你可以改变菜单出现的外观风格-->(following code will join the HEML)