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说明：  讲解matlab中求解偏微分方程的工具箱PDE工具箱，深入浅出！(Explain the matlab toolbox for solving partial differential equations PDE Toolbox, and easy!)

Convert LCC Lambert Conformal Conic to Geodesic coordination system from clark 1880 ellipsoid

产生所需要的正弦信号，并把信号保存到本地，实现信号的存储(Sinusoidal signal need, and save the signal to local signals for storage)

音频水印就是在音频中加入水印信息以达到版权保护的目标，该算法是在原始音频中嵌入另一段音频，使嵌入的音频文件并不影响原始音频的音质，就是说在音频中再嵌入一段音频，欢迎有需要的朋友学习下载

linux进程的pdf文档说明，是一个学习教程，可以方便大家学习。(pdf document of linux process.)

脑电处理中，特征提取的几个有用算法程序，包括小波熵、LZC脑电复杂度、互信息等，以上程序，我已将亲自运行，可以通过，便于大家做脑电特征提取，希望对大家有帮助(EEG processing, feature extraction algorithm several useful programs, including wavelet entropy, LZC EEG complexity, mutual information, the above procedure, I have personally run, can facilitate you to do EEG feature extraction, in the hope that everyone has to help)

说明：  主要是介绍卡尔曼滤波器的原理，并形象地说明了实现过程，最后用matlab实现了这一原理。(Mainly to introduce the principle of Kalman filter, and vividly illustrates the realization of the process, and finally use matlab to achieve this principle.)

根据NRW方法推导出计算超材料等效参数的方法，由CST仿出S11,S21并导出S11,S21的复数形式，利用matlab调用，就可以算了介电常数和磁导率(By S11, S21 calculate dielectric constant and magnetic conductivity)

使用CDKF：中心差分卡尔曼滤波算法模拟仿真不同编队构形的轨道预报，实现双星编队的精确轨道确定。其中还有可观测性能监测，Monte-Carlo的性能分析等相关程序(central difference kalman filter was used to fulfill the estimation of dual satellite, the observation of different foramtion was investigated.)

4 QAM Spatial modulation with maximum likehood detection