demo2

Matlab高级讲义- SIMULINK仿真基础(Matlab senior notes- SIMULINK based simulation)

自由空间光通信系统在大气湍流信道下的3个主要性能指标分析，即平均误码率、中断概率和平均信道容量。其中大气湍流采用gamma-gamma湍流信道衰退模型。3个M文件为平均误码率与平均信噪比之间的关系(BER_SNR.m)，中断概率(OutageP.m)，以及平均信道容量与平均信噪比之间的关系（C_SNR.m）。程序可直接运行。(The analysis of 3 key performance indicators of Free-Space Optical communication system in atmospheric turbulent channel, namely the average bit error rate, outage probability and the average channel capacity. The atmospheric turbulence is modeled by the gamma-gamma turbulent channel fading model. Three M-files are the relationship between the average bit error rate and the the average SNR (BER_SNR.m), outage probability (OutageP.m), the relationship between the average channel capacity and the average SNR (C_SNR.m).The programs can run directly.)

说明：  关于混沌振子检测弱信号的系统相位变化图，对初学混沌的人很有用。(On the chaotic oscillator detection of weak signal system phase diagram, for beginners of chaos is very useful.)

jpeg压缩与解压例子，matlab中离散余弦变换并用huffman编码(jpeg compression and decompression example, matlab and used in the discrete cosine transform coding huffman)

基于卡尔曼滤波器的目标跟踪.有文档说明，代码与文中一致。(Kalman filter based target tracking. There documentation, code and the text is consistent.)

解线性方程组之直接法【matlab例程】经典算法直接应用方便快捷(Convenient and direct method for solving linear equations of the [routine] classical algorithm matlab direct application)

说明：  滤波的常用方法,数字图像处理的常用滤波算法，试过，可以用！(Common method of filtering, digital filtering algorithm commonly used in image processing, tried, you can use!)

matlab code for leach protocol

QR码作为一种可高速、全方位识别的二维条码,已经在各行各业中得到了应用,并具有很大发展潜力.本文针对QR码图像的识别过程中可能遇到的图像噪声干扰、QR码占实际拍摄图像的一部分、倾斜、几何失真等问题进行了研究,提出了通过改进型中值滤波去除噪声,使用QR码符号特性定位并对倾斜图像进行旋转,对失真不严重的图像采用控制点变换和双线性插值方法进行几何校正.实验证明, 本文的方法简单有效, 可以用于提高条码的正确识别率.(As a high-speed, full identification of the two-dimensional bar code, QR code has been applied in all walks of life, and also has great potential for development. In this paper, aiming at QR code image recognition process may be encountered in noise interference, QR code accounting for the actual captured image just a part, slant, geometric distortion, and other issues have been studied, put forward through improved median filter to remove noise, use QR code symbol characteristics to locate and rotate the tilted image, distortion which is not serious use control-point transform and spatial bilinear interpolation method for geometric correction. The results show that this method is simple and effective, can be used to improve the QR code correct recognition rate.)

power_singlephaseASM.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_singlephaseASM.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)