underwater

该程序为自编的一个关于模拟莱斯衰落信道的整个过程，包括信号的调制、经过莱斯信道和解调，最后经过计算误比特率得出莱斯信道的性能的好坏。(The program for the self-simulation of a Rician fading channel the entire process, including the signal modulation, channel, after Rice and demodulation, and finally calculated BER Rice come to channel the good and bad performance.)

针对视频中的运动估计的钻石搜索法，比三步搜索法好，有源码以及数据。(Motion estimation for video in the diamond search, better than the three-step search method, with source code and data.)

用MATLAB语言描述的关于QPSK的无线通信系统仿真应用，如何产生QPSK信号(MATLAB language to describe the use of QPSK wireless communication system simulation applications, how to generate QPSK signal)

本文提出了一种适用于低轨卫异扩频通信系统的多普勒频移快捕方法.该方法基于数字匹配滤波器及自动频率控制环路_利用数字匹配滤波器的囚码快捕特性及其输出主相关峰值对频偏的敏感性，缩短多普勒频移的 捕获时间.论文首先推导了多普勒频移的平均捕获时间表达式，然后根据数值分析结果得到了准最佳捕获判决策略，最后通过比较验证了该快捕方法相对于传统串行捕获方法在性能上的提高. (This paper presents a low-orbit health for different spread spectrum communication system fast catching the Doppler shift method, which based on digital matched filter and automatic frequency control loop _ prisoners using digital matched filter code features rapid acquisition and the output of the main correlation peak frequency deviation of the sensitivity of the Doppler frequency shift to shorten acquisition time. paper first derive the mean Doppler shift acquisition time expression, then the numerical results obtained quasi-optimal capture decision strategies, and finally verified by comparing with the rapid acquisition method to capture the traditional method of serial improvement in performance.)

MATLAB数学工具软件 实例简明教程 王正盛 编写 南京航空航天大学(MATLAB software instances of mathematical tools to prepare simple tutorial Wang Zhengsheng, Nanjing University of Aeronautics)

使用MATLAB进行对信号的加窗和dtft计算(Carried out using the MATLAB signal increases in the calculation window and dtft)

MATLAB源码，P0301：数字图像矩阵数据的显示及其傅立叶变换 P0302：二维离散余弦变换的图像压缩 P0303：采用灰度变换的方法增强图像的对比度 P0304：直方图均匀化 P0305：模拟图像受高斯白噪声和椒盐噪声的影响 P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波 P0308：图像的自适应魏纳滤波 P0309：运用5种不同的梯度增强法进行图像锐化 P0310：图像的高通滤波和掩模处理 P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理 P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理(MATLAB source code, P0301 : Digital image data matrix display and Fourier Transform P0302 : Two-dimensional discrete cosine transform image compression P0303 : Gray used a new method to enhance the contrast of the image P0304 : histogram equalization P0305 : Simulation images by white Gaussian noise and Impulse noise impact P0306 : 2D median filtering function medfilt2 right by the Salt and Pepper image noise filtering P0307 : MATLAB filter2 the function of noise interference by the image filtering P0308 : Image Adaptive Filter Weiner P0309 : use five different gradient Enhancement Act for image sharpening P0310 : Images of the high-pass filtering and mask handling P0311 : use Butterworth (Butterworth) low-pass filter to noise interference by the image smoothing P 0312 : Butterworth (Butte)

HYBRID pso OPTIMIZATION

用于大坝安全预警模型的多元回归以及变量分离的程序。也可以用于其他非线性回归(Dam safety warning model for multiple regression and variable separation procedures. Can also be used for other non-linear regression.)

Cognitive Radio Primary User Detection