labexp

该程序为matlab环境下程序，主要演示法国尼斯天文台埃农教授在研究天体力学过程中提出了许多二维映射，通常说的是埃农映射H。(The program for the matlab environment procedures, the main demonstration of the Observatory in Nice, France, Egypt and a professor of agricultural research celestial mechanics in the process put forward a number of two-dimensional mapping, is usually said that the Egyptian agricultural mapping H.)

使用matlab软件读取数值天气预报grib文件(Using the Matlab software to read the numerical weather grib files)

利用matlab实现H-infinity鲁棒控制(H-infinity robust control)

分形的练习一 ①Koch曲线 用复数的方法来迭代Koch曲线 clear i 防止i被重新赋值 A=[0 1] 初始A是连接（0，0）与（1，0）的线段 t=exp(i*pi/3) n=2 n是迭代次数 for j=0:n A=A/3 a=ones(1,2*4^j) A=[A (t*A+a/3) (A/t+(1/2+sqrt(3)/6*i)*a) A+2/3*a] end plot(real(A),imag(A)) axis([0 1 -0.1 0.8]) ②Sierpinski三角形 A=[0 1 0.5 0 0 1] 初始化A n=3 迭代次数 for i=1:n A=A/2 b=zeros(1,3^i) c=ones(1,3^i)/2 A=[A A+[c b] A+[c/2 c]] end for i=1:3^n patch(A(1,3*i-2:3*i),A(2,3*i-2:3*i), b ) patch填充函数 end (Fractal Exercise One The ① Koch curve Plural iteration Koch curve clear i to prevent i is reassigned A = [0 1] initial A is a connection (0,0) and (1,0) of the segments t = exp (i* pi/3) n = 2 n is the number of iterations for j = 0: n A = A/3 a = ones (1,2* 4 ^ j) A = [A (t* A+ a/3) (A/t+ (1/2+ sqrt (3)/6* i)* a) A+2/3* a] end plot (real (A), imag (A)) axis ([0 1-0.1 0.8])   ② Sierpinski triangle A = [0 1 0.5 0 0 1] initialized A n = 3 the number of iterations. for i = 1: n A = A/2 b = zeros (1,3 ^ i) c = ones (1,3 ^ i)/2 A = [A A+ [c b] A+ [c/2 c]] end for i = 1:3 ^ n patch (A (1,3* i-2: 3* i), A (2,3* i-2: 3* i), b ) patch filled function end)

采用卡尔曼滤波器来对视频中的目标进行跟踪，带有一个产生视频的主函数，通过kalman滤波器实现对目标的跟踪，简单易懂(Kalman filter to track targets in the video, produced with a video of the main function, to achieve the target tracking by kalman filter, easy to understand)

用遗传算法优化bp网络，实现的方式很新颖也很成功，实现了网络的不陷入局部收敛(Using genetic algorithm to optimize the bp network, is very innovative and successful implementation, realize the network do not fall into local convergence)

说明：  计算时间序列的关联维，可评价时间序列的相关性(The correlation dimension of time series can be calculated and the correlation of time series can be evaluated)

RD 算法----SAR点目标仿真 结果还是比较不错的。(RD algorithm---- SAR point target simulation results is quite good.)

四种IIR滤波器的设计与性能对比（巴特沃斯，切比雪夫I、II型，椭圆滤波器）(The four IIR filter design and performance comparison (Butterworth, cut Chebyshev I, type II, elliptic filter))

一个用与电网不平衡的锁相环 是参考搭建的 能够适应基本的不平衡 复杂的情况效果不好(it is used for the unbalanced grid converter and phase locked loop is the basic idea from the id=0)