matlabfangzhen

直接扩频系统常用函数，有助于对直接扩频系统的算法研究。(functions for Direct spread spectrum system,guod referense for the study for Direct spread spectrum system)

This simulink model simulates the damped driven pendulum, showing it s chaotic motion. theta = angle of pendulum omega = (d/dt)theta = angular velocity Gamma(t) = gcos(phi) = Force omega_d = (d/dt) phi Gamma(t) = (d/dt)omega + omega/Q + sin(theta) Play with the initial conditions (omega_0, theta_0, phi_0 = omega(t=0), theta(t=0), phi(t=0)) and the system parameters (g, Q, omega_d) and the solver parameters/method. Chaos can be seen for Q=2, omega_d=w/3. The program outputs to Matlab time, theta(time) & omega(time). Plot the phase space via: plot(mod(theta+pi, 2*pi)-pi, omega, . ) Plot the Poincare sections using: t_P = (0:2*pi/omega_d:max(time)) plot(mod(spline(time, theta+pi, t_P), 2*pi)-pi, spline(time, omega, t_P), . ) System is described in: "Fractal basin boundaries and intermittency in the driven damped pendulum" E. G. Gwinn and R. M. Westervelt PRA 33(6):4143 (1986) (This simulink model simulates the damped driven pendulum, showing it s chaotic motion. theta = angle of pendulum omega = (d/dt)theta = angular velocity Gamma(t) = gcos(phi) = Force omega_d = (d/dt) phi Gamma(t) = (d/dt)omega+ omega/Q+ sin(theta) Play with the initial conditions (omega_0, theta_0, phi_0 = omega(t=0), theta(t=0), phi(t=0)) and the system parameters (g, Q, omega_d) and the solver parameters/method. Chaos can be seen for Q=2, omega_d=w/3. The program outputs to Matlab time, theta(time) & omega(time). Plot the phase space via: plot(mod(theta+pi, 2*pi)-pi, omega, . ) Plot the Poincare sections using: t_P = (0:2*pi/omega_d:max(time)) plot(mod(spline(time, theta+pi, t_P), 2*pi)-pi, spline(time, omega, t_P), . ) System is described in: "Fractal basin boundaries and intermittency in the driven damped pendulum" E. G. Gwinn and R. M. Westervelt PRA 33(6):4143 (1986) )

Convolution Encoder and Decoder 1/2 , Viterbi algorithm

induction motor m-file simulation

计算天线阵列远场方向图，支持各种幅度加权，相位加权，可自行指定阵元方向图(calculate the farfield of an antenna array with various degrees of freedom)

很实用的matlab编程，适合于初学人员同时也适用于高年级的学生及研究人员(Very practical matlab programming, suitable for beginners who also suitable for high-grade students and researchers)

这是关于调制传递函数MTF如何处理卫星遥感图像的一个讲义，对图像进行复原，提高清晰度(This is the modulation transfer function MTF on how to deal with satellite remote sensing images of a lecture, image recovery, improve clarity)

MATLAB最陡下降法自适应滤波器的数据，以及处理程序·(MATLAB method of steepest descent adaptive filter data, and processing)

验证平稳随机信号的互功率谱等于各自相关函数傅里叶变换的乘积。(To SSS signal, I will prove the cross PSW is equal to the multiply of two FT of the autocorrelation.)

用matlab编写季节性差分处理程序！！ ！！ ！！ ！！ ！1(using Matlab preparation procedures for handling seasonal difference! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 1)