shulispa

通信的数字化是它能与计算机技术和数字信号处理技术相结合的基础，而实现通信数字化的前提是信源能提供的各种用于传递的消息，例如语音、图像、数据、文字等都必须以数字化形式表示。而信源编码是数字通信系统中的重要组成部分，他是保证信号有效传输的一种重要方式。霍夫曼编码依据字符出现的概率来构造异字头的平均长度最短的码字，有时称之为最佳编码，其优越的性能被广泛使用在数字通信系统中。霍夫曼编码已经成为数据压缩的灵魂算法。本文介绍了无失真编码算法的构造，霍夫曼编码的规则和特点，同时分析了对信源进行优化的方法，最后通过MATLAB仿真来讨论比较二元霍夫曼编码、三元霍夫曼编码以及信源扩展编码的效率，来实现霍夫曼码的优化构造。(The digital communication is it can and computer technology and digital signal processing technology in combination of the base, and realize the digital communication is the premise of source can provide all kinds of used to deliver news, such as voice, video and data and text must take the digital form said. And the source coding digital communication system is the important component, he is to ensure the effective transmission signal is an important way. Huffman coding based on the probability of characters appear to construct different "the average length of the shortest code words, sometimes called the best coding, superior performance is widely used in digital communication system. Huffman coding has become the soul of data compression algorithm. This paper introduces the structure of the encoding algorithm without distortion, Huffman coding rules and characteristics, and analysis of the source of the optimization method, and finally by MATLAB simulation to discuss compares two yu)

生成FPGA编程中ROM初始化所需要的.MIF文件。该程序生成的是双极性波的波形数据。生成的数据宽度为8，深度是1024。(ROM generation FPGA programming needed to initialize. MIF file. The program is a bipolar wave generated by the waveform data. Generated data width is 8, the depth is 1024.)

基于Scilab的粒子群算法代码，Scilab是一个功能和matlab差不多的开源软件(Based on the Particle Swarm Optimization Scilab code, Scilab is a functional and open source software similar to matlab)

matlab在系统辨识中的应用此处为递推的极大似然法应用的源代码及运行后结果（包括图像）(Matlab system identification in the application of recursive here Maximum Likelihood of the application's source code and running after the results (including images))

MATLAB多个小程序:关于MATLAB中数组函数的使用以及运算(small number of MATLAB : MATLAB array of functions and the use of Operational)

摄影定理原理 对测方图像 连续相对定向 并进行误差分析 单位权中误差(Photography theorem principle of the measuring square image is continuous relative orientation and error analysis of unit weight error)

最小方差无畸变波束形成，常用的常规波束形成方法(Minimum variance distortionless beam forming, common conventional beamforming method)

book for reference dss systems

Gray scale for digital Image Processing MATLAB code

某铁路局电气化铁道过分相真实模型，其中参数为真实参数，具有应用价值(Excessive relative to the true model for electrified railway)