work

说明：  提出了正交频分复用(O FDM ) 系统中一种新的载波频偏估计算法L 载波频偏估计过程可分 为获取和跟踪, 其中, 获取过程和时间同步是同时完成的L新算法可实现的最大载波频偏获取范围 是整个信号带宽的一半L新的跟踪算法是一个最大似然算法, 在加性白噪声高斯信道(AW GN ) 下, 当N (训练序列长度的一半) 等于128 时, 其性能比Schm idl 算法提高约7127 dB 在多经信道下, 当 信噪比不是很高时, 新算法仍具有优势L(new carrier f requency offset est imat ion scheme in o rthogonal f requency division mu lt ip lex ing (O FDM ) system is p ropo sed. The carrier f requency offset est i2 mat ion includes acqu isit ion and t rack ing, and acqu isit ion as w ell as t im ing synch ro2 n izat ion can be perfo rmed simu ltaneou sly w ith h igh accu racy. The max imum acqu i2 sit ion range can be up to one half of overall signal bandw idth. The p ropo sed t rack2 ing est imato r is a max imum 2likelihood est imato r, and in AW GN channel, abou t 7127dB imp rovemen t is ob tained compared to the Schm idl’s algo rithm w hen N = 128 in mu lt ipath channel, the p ropo sed algo rithm wo rk s w ell at moderate SNR.)

《图论算法及其matlab实现》的部分原始m文件，免去了自行键入的烦恼，很便捷(" Graph Theory Algorithm and Its Implementation matlab" m part of the original document, which eliminates the trouble of their own type, it is convenient)

利用matlAB中自带的guide工具，绘制三维李萨如图形，也可绘制广义的李萨如图形，包括矩形波，三角波(the simulation of lissar figure)

说明：  模式识别中的ISODATA算法，以及利用模式相似性测度分类的源程序(The ISODATA algorithm for pattern recognition and classification using pattern similarity measure of the source)

矩量法计算二维圆柱体散射，通过比较波长与半径比值，分析雷达散射截面结果变化。(The method of moment method is used to calculate the scattering of two-dimensional cylinder. The ratio of wavelength and radius is analyzed.)

This program give examples on how to sample from normal distribution

基于matlab实现电力电子的simulink仿真，内有详细的原器件介绍及实例详解，很容易快速掌握电力电子仿真。(Realization based on matlab simulink power electronics simulation, with detailed description and examples explain the original device, it is easy to grasp the power electronic simulation.)

说明：  有关机动目标跟踪，卡尔曼滤波相关的资料，对从事卡尔曼滤波研究，机动目标跟踪的朋友有参考价值 (The maneuvering target tracking, Kalman filtering relevant information, engaged in Kalman filtering, target tracking friends have reference value)

feature extraction of images using moment invarients

使用matlab来对图像进行边缘检测的方法之一，便于在此基础上进行其他的功能的实现(Using matlab to the image edge detection methods, to facilitate this function based on the realization of other)