MATLABexcise

使用matlab实现香农编码，并求出编码效率(Using matlab to achieve the Shannon encoding, and find the coding efficiency)

非平稳信号时频分析中的S变换实现的例程及应用(Non-stationary signal analysis of time-frequency S transform realization and application of routine)

testocx.m － 用于测试ActiveX控件ActVoice的MATLAB录音程序

清华大学周东华教授提出的强跟踪滤波器，有效改善突发干扰下的跟踪能力。(Strong tracking filter supposed by Pro. ZHOU Dong-hua, which enhanced the tracking ability during sudden disturb.)

现代通信系统第二版 的整个书得源代码，很全的代码，希望对同学有帮助(The second edition of modern communication systems have the source code throughout the book)

本程序的功能主要是雷达系统的仿真，包含雷达信号的产生，线性调频，脉冲压缩，正交双通道处理，杂波对消，MTD处理，恒虚警检测等部分内容。其中雷达信号的产生是采用7位巴克码序列。(This program ismainly about Radar System Simulation.Important part of Radar is included.)

介绍了平均电流控制型 PFC Boost 变换器的结构， 分析了其工作原理。 分别采用 Power System 工具箱和考虑电感电流断续工作状态的 C-MEX 文件 S 函数建立了主电路模型，对平均电 流控制型 PFC Boost 变换器进行了仿真。仿真结果表明，与 Power System 工具箱模型相比，基于 C-MEX 文件的 S 函数仿真模型能够准确仿真电流断续工作状态，仿真速度快。设计了电路样机进 行了实验研究，仿真结果与实验结果一致，证明了该方法的正确性。利用该方法可以高效地仿真 研究系统结构和参数变化时性能变化情况，得到的平均电流控制型 PFC Boost 变换器的混沌分岔 图，为更好地理解和设计这种变换器提供了有利的工具。(The structure of average current controlled power factor correction (PFC) Boost converter is introduced, and its working principle is analyzed. The PFC Boost converter is simulated using the model established with Power System toolbox and the C-MEX file S-function model respectively. Simulation results show that the C-MEX file S-function model can simulate the all state of the converter including discontinuous conduction mode with high speed. Experimental results show the correctness of the simulation results and the proposed method. The method is suitable for simulation the performance changing with the variation of system structure or parameters. The bifurcation diagram is derived for PFC Boost converter using this method, which is very useful for better understanding and better design of the converter.)

simulation of pll-dl

用Matlab实现的数字音频水印嵌入与提取，包括水印提取，水印嵌入，前后对比等功能。(Using Matlab implementation of the digital audio watermark embedding and extraction, including the watermark extraction, the watermark embedding, and other functions before and after contrast.)

本代码是关于医学图像的边缘检测，可实现快速的的收敛到感兴趣边缘，matlab编程。(The code is on the medical image edge detection, can be achieved fast convergence to the edge of interest, matlab programming.)