exam

用MATLAB编写的基于有限体积法求解二维浅水方程边界数值通量的Riemann求解器（HLL格式），可处理干河床问题，适用于规则网格及不规则网格，只需提供边界左右两侧的水深和流速以及外法线矢量(Written using MATLAB numerical flux based on the finite volume method for solving the two-dimensional shallow water equations boundary Riemann solver (HLL format), can handle the dry riverbed problem, applicable to a regular grid and irregular grid, just on both sides of the border around water depth and flow rate as well as outside the normal vector)

批量处理灰度图像，并能够识别图像质量中心进行截圆处理，同时生成灰度直方图以及各个点的坐标文件(Batch processing grayscale images, the image quality and the ability to identify the center circle cut deal, while generating histogram and the coordinates of each point file)

本程序用来计算太阳能的直射辐射，晴天模型(simulation the direct radiation of solar)

matlab仿真平台下仿真输出spwm的电压和电流模型(Voltage and current simulation model for spwm)

In sum capacity of an OFDM system is maximized by allocating each subchannel to the user with the highest channel gain over this channel and distributing power among subchannels in a water-filling manner.

MQAM在AWGN信道下的星座图与误码率分析(MQAM constellation and BER Analysis)

说明：  一个关于傅里叶变换的学习课件，本人自己制作，课题组内部学习使用。(A study on the Fourier transform of the courseware, I produce their own, learning to use the internal research group.)

这里有几篇有关doppler frequency offset估计问题的相关文献，主要采用的是信道响应法，自相关法，循环前缀法来估计多普勒频移的。( Here are a few questions about the doppler frequency offset estimate of the relevant literature, is mainly used in the channel response, self-correlation method, cyclic prefix to estimate the Doppler frequency shift.)

四种聚类算法源代码及示例代码,本程序的最终目的是形成一套标准的用于聚类、可扩展的工具。包括的内容有1. 聚类算法：Kmeans和Kmedoid算法、FCMclust, GKclust, GGclust算法 2. 评估分类原型：程序可以在二维图像上绘制出聚类的结果 3. 验证：程序给每一个算法提供验证机制，每个聚类算法会统计(Partition Coefficient (PC), classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni s Index (XB), Dunn s Index (DI) and Alternative Dunn Index (DII)几种衡量指标。-Four kinds of clustering algorithms source code and sample code, the ultimate goal of this program is to form a set of standards for clustering, scalable tools. Including the contents of a. Clustering algorithm: Kmeans and Kmedoid algorithms, FCMclust, GKclust, GGclust algorithm 2. Assessment classified prototypes: programs can be plotted in two-dimensional image, the results of clustering 3. Verify: Program to provide an algorithm to each authentication mechanism, each clustering algorithm will calculate Partition Coefficient (PC), classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni s Index (XB), Dunn s Index (DI) and Alternative Dunn Index (DII) of several metrics.)

激光650nm接收器资料，接收光为38Khz可调试光(650nm laser data receivers, the received optical light can be debugged to 38Khz)