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matlab 基础教程，第四章，适合初学者(matlab Essentials, Chapter IV, suitable for beginners)

针对噪声，用AR2建模，用卡尔曼滤波，并用Allan方差检验(against noise, using AR2 modeling, Kalman filtering, and with Allan variance test)

this code solves schrodiger

已知消息信号为一个长度为8的二进制序列；载波频率为 ，采样频率为4KHz。编程实现一种调制、传输、滤波和解调过程。(Known message signal is a binary sequence with a length of 8 the carrier frequency, the sampling frequency of 4KHz. Programming a modulation, transmission, filtering, and demodulation process.)

说明：  应用MATlAB语言处理数字信号与数字图像(Application MATlAB language processing digital signals and digital images)

this is the fan speed motor control that input is torque and output is speed

光纤模式容量，以及归一化。并用此对单模光纤进行模式分析(Fiber mode capacity, and normalization. The mode analysis of single mode fiber is also used.)

采用主成分分析算法进行人脸识别的matlab程序，需要ORL数据库。(PCA recgnition)

GN25L98 GPON 的芯片手册 详细记载了芯片的使用方法(GN25L98 GPON chip manual Detailed the use of the chip)

介绍matlab程序中的傅里叶变换测试语音，测试语音的频谱，并改变采样率和采样点，在测试语音(Matlab program introduces test Fourier transform voice, test speech spectrum, and change the sampling rate and sampling points, the test speech)