A1_13

熵（近似熵，样本熵）,适合初学者。值得一看。。。。。(Entropy (entropy of approximate entropy, sample), suitable for beginners. Worth a look... )

说明：  利用时域有限差分（FDTD）仿真二维（2D）横磁波（TM）的传播，吸收边界条件为完全匹配层（PML）。(The use of finite difference time domain (FDTD) simulation of two-dimensional (2D) transverse magnetic (TM) the spread of absorbing boundary conditions for the perfectly matched layer (PML).)

用几种函数实现傅里叶变换，变换后可输出图形(With several functions for Fourier transform, transform graphics output)

1)program for GPS week num. and time of week into year/month/day/hour/minute/second format. 2)programs for various data formats into matlab format such as Kp, Solar Flux, Bz, Dst etc.

G-P算法计算关联维数，可以运用在混沌时间序列的瓦斯浓度预测研究中(GP algorithm to calculate the correlation dimension, you can use the gas concentration in the prediction of chaotic time series in)

利用回溯算法解决组合问题。构造虚拟二叉树，采取深度优先搜索方式得到解。(Backtracking algorithm to solve combinatorial problems. Construct a virtual binary tree, the depth-first search to get the solution.)

face_LDA program surce code in matlab

说明：  FA算法，能很好的解决函数优化问题，对于解高维函数有较好的实验结果(FA algorithm can solve function optimization problem, the solution of high-dimensional function for better results)

that the performance is improved by increasing N, and probability of detection can be improved by increasing N value even if the SNR is much lower, as long as N is large enough without noise uncertainty.

很简单易懂的卡尔曼滤波算法，希望能帮助到初学者(kalman filter)