jkshangwang

导纳矩阵的形成方法,用于电力系统潮流计算分析相当有用.(admittance matrix formation method for power flow analysis has been useful.)

例3：分析占空比为ta的矩形脉冲频谱 T=1 时间窗大小 ta=0.5 占空比 N=256 t=linspace(-T,T,N) ts=2*T/N fs=1/ts (x=zeros(1,N) x(N/2-round(N/2*ta):N/2+round(N/2*ta))=ones(1,2*round(N/2*ta)+1) y=fft(x,N) figure plot(t,x) title([ 时域信号图 占空比为 ,num2str(ta)]) axis([-T T-0.2 1.2]) xlabel( t /s ) figure subplot(211) f=linspace(-fs/2,fs/2,N) plot(f,abs(fftshift(y))/N) title([ 矩形脉冲双边谱 脉冲时间t=[- ,num2str(ta*T), , ,num2str(ta*T), ] ]) xlabel( f /Hz ) )

求混沌时间序列的盒子维(box dimension)覆盖法(Seeking chaotic time series box dimensions (box dimension) covering method)

这个源码提供了穿墙雷达反向投投影成像算法的实现 (This source provides a through-wall radar projectors imaging algorithm to achieve reverse)

说明：  图象压缩方面的论文pdf格式 可用于毕业设计方面的工作(Image compression pdf format papers for school design work)

基于蒙特卡罗方法的试卷难度分布研究,Monte Carlo method based on the difficulty of distribution of papers(Monte Carlo method based on the difficulty of distribution of papers)

说明：  matlab说明，各种各样的公式符号说明(matlab shows a variety of formulas symbol description)

矩阵功能的演示 首先显示矩阵 所有数据按照MATLAB中的矩阵操作实例实现(Matrix function shows the first display all the data matrix in the matrix operation in accordance with examples of MATLAB Implementation)

说明：  matlab神经网络，用于神经网络的建模。希望有用(matlab neural network for neural network modeling. Hope that useful)

使用时域有限差分法编写的计算散射截面的简单程序(Scattering cross section is calculated using a simple program written in finite difference time domain method)