Self-organizing_feature_map_model

TDOA code for position location

在实现QPSK的系统时，用到的位同步部分的程序(QPSK in the realization of the system, used part of the process-bit synchronous)

％ EM algorithm for k multidimensional Gaussian mixture estimation ％ ％ Inputs: ％ X(n,d) - input data, n=number of observations, d=dimension of variable ％ k - maximum number of Gaussian components allowed ％ ltol - percentage of the log likelihood difference between 2 iterations ([] for none) ％ maxiter - maximum number of iteration allowed ([] for none) ％ pflag - 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) ％ Init - structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) ％ ％ Ouputs: ％ W(1,k) - estimated weights of GM ％ M(d,k) - estimated mean vectors of GM ％ V(d,d,k) - estimated covariance matrices of GM ％ L - log likelihood of estimates ％( EM algorithm for k multidimensional Gaussian mixture estimation Inputs: X (n, d)- input data, n = number of observations, d = dimension of variable k- maximum number of Gaussian components allowed ltol- percentage of the log likelihood difference between 2 iterations ([] for none) maxiter- maximum number of iteration allowed ([] for none) pflag- 1 for plotting GM for 1D or 2D cases only, 0 otherwise ([] for none) Init- structure of initial W, M, V: Init.W, Init.M, Init.V ([] for none) Ouputs: W (1, k)- estimated weights of GM M (d, k)- estimated mean vectors of GM V (d, d, k)- estimated covariance matrices of GM L- log likelihood of estimates)

Jakes Simulation Models With Correct Statistical Properties for Rayleigh Fading Channels

偏振图像目标识别算法，根据四个方向的偏振信息，识别目标，内含偏振图片(Polarization image target recognition algorithm, according to the four directions of polarization information, identify targets, containing polarizing picture)

验证了多径效应与瑞利衰落，分别测试了10、100、500、1000条路径下的衰落情况。(Verify the effect of multipath Rayleigh fading, were tested under the fading paths 10,100,500,1000 situation.)

说明：  用MATLAB m文件编些的DS-CDMA 仿真程序

这是计算分维数的分形程序，经检测能完美运行，效果很好。(This is dimensions calculation fractal program, after testing can perfect operation, the effect is very good. )

基于matlab和simulink的时间延迟chen系统的吸引子程序，对与非线性动力学与混沌方面的同行很有用。(A code for time-delayed chen attractor based on matlab and simulink)

当水下存在多个目标时，利用平均声强器检测已经不再有效，此时使用复平均声强器来确定多目标的方位。(When existing multi sources, average acoustic intensity does work. At this case, complex average acoustic intensity can obtain the direction of multi sources.)