chap9

perturbations on a satellite

本程序为将WuYufei的turbo码中随机交织器程序改为分组交织器的程序，此分组交织器为20by20实现行入列出功能，经调试可用(This procedure will be WuYufei random interleaver of turbo codes in the program changed to packet interleaver process, this packet interleaver row into the list for the 20by20 achieve functionality, can be used by the debugging)

产生m序列，应用于扩频你通信技术，非常实用。(Including pseudo-code tracking and using Matlab implementation of direct sequence spread spectrum signal tracking procedures.)

matlad code for corgnitive radio

用matlab构造滤波器,非常有用。用matlab构造等波纹滤波器(Matlab filter structure with very useful)

说明：  该程序涉实现目标检测功能，IIR滤波器的背景估计法的背景相减目标检测 && canny(this is a goal detection program, a IIR filter )

采用MATLAB编写的，斜齿轮时变啮合刚度计算程序。原理参见李瑰贤的《宽斜齿轮副啮合刚度计算及扭振特性的研究》。(program to calculate the time-varing menshing stiffness of helical gear.)

简单直线阵列遗传算法优化，可以实现对简单四元直线阵列的优化。(Simple genetic algorithm to optimize linear array, which can realize the optimization of simple quarternary linear array.)

人口增长（动物繁殖）模型，确定种群的固有增长率和稳定分布，建立稳定收获模型。 (it is about a model of population increasing)

说明：  读取PhysioBank ATM数据库中的.mat心电数据，以图像显示(Read. mat ECG data from Physio Bank ATM database for image display)