junyunlianghua

cosmic下载数据，读取其中的有用数据，phs，prof等数据，画出电离层电子密度(cosmic download data, read one of the useful data, phs, prof other data, draw the ionospheric electron density)

有限差分法 微分方程和积分微分方程数值解的方法。基本思想是把连续的定解区域用有限个离散点构成的网格来代替， 这些离散点称作网格的节点；把连续定解区域上的连续变量的函数用在网格上定义的离散变量函数来近似；把原方程和定解条件中的微商用差商来近似， 积分用积分和来近似，于是原微分方程和定解条件就近似地代之以代数方程组，即有限差分方程组 ， 解此方程组就可以得到原问题在离散点上的近似解。然后再利用插值方法便可以从离散解得到定解问题在整个区域上的近似解。 (Finite Difference Method Numerical solution of differential equations and integro-differential equation approach. The basic idea is to set a continuous solution of the region with a finite number of discrete points instead of a grid consisting of, these discrete points called grid nodes the solution of a continuous area on a given function of continuous variables used in the definition of discrete grid variable function approximation the original equation and boundary conditions in the micro-business operators to approximate differential, integral with the points and to approximate, so the original differential equations and boundary conditions are replaced by algebraic equations near Side, that is, finite difference equations , solve this equation group can get the original problem in discrete points on the approximate solution. And then using interpolation methods can be determined from the discrete solution of the problem solution of the approximate solution on the entire region)

小波框架融合： 直接执行Kuang文件即可得融合后图像(Wavelet frame fusion: Kuang documents directly to the implementation of a fused image)

fastica 工具包，独立成分分析。安装在matlab的toolbox下即可使用(fastica toolbox，for ica analysis)

文章对几种常用的基于循环前缀(CP)的最大似然同步算法进行了分析，并对其频偏估计方差进行了比较；同 时针对基于CP 的同步算法在多径衰落信道下性能较差的情况，提出了一种改进的CP 同步算法并进行了仿真，结果表明相比 于原ML 算法，文中算法在多径信道下可有效提高频偏估计性能。(】This paper does some research on multiple maximum-likelihood (ML) algorithms based on cyclic prefix (CP) and compares variances of frequency-offset estimation After the analysis of the bad performance of CP based algorithms in multi-path fading channels, an improved CP algorithm is proposed and the simulation shows that this algorithm can improve its performance effectively in multi-path fading channels.)

matlab练习用100个实例。有各个方面的。简单实用。(matlab exercises with 100 instances. There are various aspects. Simple and practical.)

基于MATLAB的FFT方法的滤波方法分析(Filter Method Based on MATLAB FFT method)

主要是看如何产生矩形波，定义了矩形波的持续时间，采样点数(width points)

非常好的关于matlab绘图的代码，可以学会绘制漂亮的二维与三维制图(Very good about matlab drawing code, you can learn to draw beautiful 2D and 3D mapping)

Algorithm to find the melody of a polyphonic music signals.