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此函数包含了IBP算法的matlab源码程序，共享给大家共同学习(This function includes the IBP algorithm matlab source program, to share common learning)

由matlab实现的HMM，两个文件可以相互参考(Implemented by the matlab HMM, the two files can refer to each other)

几种时延估计算法，包括广义相关法，二次相关法，循环谱相干法等(Time delay estimation of cyclic cross-correlation method, based on steady signal cycle characteristics of several time delay estimation algorithms, including the generalized correlation method, quadratic correlation method, cyclic spectral correlation method, etc)

包括广义互相关函数GCC时延估计，小波包分析提取振动信号中的特征频率，计算互信息非常有用的一组程序。( Including the generalized cross-correlation function GCC time delay estimation, Wavelet packet analysis to extract vibration signal characteristic frequency, Mutual information is useful to calculate a set of procedures.)

这本书是老师推荐给我的，非常好，我用这个学习matlab然后毕设时候很顺利。(This book is the teacher recommended to me, very good learning matlab and then completed the set up very well when I use this.)

经典的瑞利衰落信道仿真模型-jakes模型。程序可以修改不同的入射路径个数。仿真结果是不同入射路径个数的jakes模型和同分布的瑞利衰落的包络分布对比。直接运行“tu.m”(The classic Rayleigh fading channel simulation model-jakes model. Program can modify the number of incident path. The simulation results compare jakes model of different incident paths with distribution of Rayleigh fading.)

GPS工具箱，包括坐标变换，求解定位信息(GPS toolbox, including coordinate transformation, to solve the positioning information)

说明：  在灰度范围[100,200]内显示图像，以灰度等级20显示图像(In gray-scale range of [100,200] display image to 20 gray levels display images)

matlab code for Hilbert Huang Transform part (matlab code for Hilbert Huang Transform part)

Fminsearch does not admit bound constraints. However simple transformation methods exist to convert a bound constrained problem into an unconstrained problem.