EEMD

用matlab编程绘制矩形窗函数的幅频特性，窗函数形状的长度为10，20，50，100.(Programming using matlab draw rectangle window function of the amplitude-frequency characteristics, the shape of window function of length of 10,20,50,100.)

说明：  RD算法作为SAR处理中最重要的处理算法，在远场近似的条件下，可将二维处理分离为两个一维处理，降低了运算量，成像效果良好。(RD算法作为SAR处理中最重要的处理算法，在远场近似的条件下，可将二维处理分离为两个一维处理，降低了运算量，成像效果良好。 RD algorithm is the most important processing algorithm in processing SAR, in the far field approximation, the two-dimensional separation into two one-dimensional processing, reduces the amount of computation, good imaging effect. )

As shown in (5), the inductor current oscillates around a dc value at twice the grid frequency. The PWM technique assumes a constant dc input current and thus,

此程序可以把MATLAB二维仿真图形进行全屏显示(This program can be two-dimensional simulation of MATLAB graphics full screen)

ATLAB是矩阵实验室（Matrix Laboratory）的简称，是美国MathWorks公司出品的商业数学软件，用于算法开发、数据可视化、数据分析以及数值计算的高级技术计算语言和交互式环境，主要包括MATLAB和Simulink两大部分。(ATLAB is a matrix laboratory (Matrix Laboratory) for short, is a U.S. company produced a commercial mathematics MathWorks software for algorithm development, data visualization, data analysis and numerical calculation of the senior technical computing language and interactive environment, including MATLAB and Simulink two parts.)

计算一维时间序列的盒子维数，并提供了洛伦兹、哈农两种典型的混沌信号以及实际海洋背景噪声信号可供计算参考。(Calculate the dimension of the box one-dimensional time series and provides Lorentz, Hanon two typical chaotic signal and the actual ocean background noise signal for calculation.)

蒙特卡罗方法的基本原理及思想如下： 当所要求解的问题是某种事件出现的概率，或者是某个随机变量的期望值时，它们可以通过某种“试验”的方法，得到这种事件出现的频率，或者这个随机变数的平均值，并用它们作为问题的解。(　The principle of Monte Carlo method and it s application are int roduced.)

岩体稳定性研究在工程中十分重要，岩体破坏引起崩塌落石等。(Stability of rock mass is very important in engineering, rock mass damage caused by falling rock and so on collapse.)

最小二乘加速算法的算法说名，并附有详细matlab代码(least square acceleration filtering)

％ A 2D homogeneous convection-diffusion case (u=exp(-ex*deta*x-ex*deta*y) with a square with ％ all Dirichlet boundary, note that reaction coefficient is not zero ％ by indirect BKM ( A 2D homogeneous convection-diffusion case (u = exp (-ex* deta* x-ex* deta* y) with a square with all Dirichlet boundary, note that reaction coefficient is not zero by indirect BKM)