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说明：  本文阐述了扩展频谱通信技术的理论基础和实现方法，利用MATLAB 提供的可视化 工具Simulink 建立了扩频通信系统仿真模型，详细讲述了各模块的设计，并指出了仿真建模 中要注意的问题。在给定仿真条件下，运行了仿真程序，得到了预期的仿真结果。同时，利 用建立的仿真系统，研究了扩频增益与输出端信噪比的关系，结果表明，在相同误码率下， 增大扩频增益，可以提高系统输出端的信噪比，从而提高通信系统的抗干扰能力。 (This paper describes the theory of spread-spectrum communication technology and implementation methods based on the use of visualization tools provided by MATLAB Simulink to establish a spread spectrum communication system simulation model, described in detail the design of each module, and pointed out that the simulation modeling to note problem. In the given simulation conditions, running a simulation program to obtain the desired simulation results. Meanwhile, the use of the simulation system to study the spreading gain and the relationship between the output signal to noise ratio, results show that the same bit error rate, increased spreading gain can increase the system output signal to noise ratio, thereby enhancing communication system disturbance.)

抽取和内插的分数阶Fourier 域分析 离散时间分数阶Fourier 变换(Extraction and interpolation of the fractional Fourier domain analysis of discrete-time Fourier transform fractional)

认知无线电matlab模拟小程序，带图分析(Cognitive radio matlab simulation applet with FIG Analysis)

sift算法实现的图像匹配程序，使用matlab编写的，多用于图像拼接，融合等领域。(sift algorithm of image matching procedures, the use of matlab prepared are used for image mosaic, integration and other fields.)

论述了MALAB仿真的一系列经常遇到的基本知识及难题，是这方面的经典书籍(Discusses the simulation MALAB often encountered in a series of basic knowledge and problems, is a classic book in this area)

轨道交通牵引供电的一个初步模型，给分析暂态一个很好的方向。(A preliminary model of traction power supply for rail transit provides a good direction for transient analysis.)

it s combination from okumurra hatta pathloss and walfish ikegami model it can count pathloss in urban,suburban, and rural area

模糊神经网络解耦MATLAB程序，系统辨识中有用，希望对大家有帮助(Fuzzy Neural Network Decoupling MATLAB procedures, system identification useful, and they hope to help everyone)

watermarking is the process of hiding information in the digital image.

optical code recognition