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本文件是基于MATLAB的声音信号频谱分析仪的源代码(This document is based on MATLAB)

Debye级数展开模型计算双层球形粒子散射角——散射光强曲线： 1. RB1.m 计算第一类Ricatti-Bessel函数的函数 2．RB2.m 计算第二类Ricatti-Bessel函数的函数 3. Alegendr.m 计算角函数 和 的函数 4. MieCoeff.m 计算米尔系数的函数 5. Amp.m 计算散射光复振幅的函数 6. DebyeIntensity.m Debye级数展开模型画包覆粒子散射角-光强图 (Debye series expansion model double spherical particle scattering angle- scattering intensity curve: 1. RB1.m calculated first class Ricatti-Bessel function of the function 2. RB2.m calculate the second category Ricatti-Bessel function of the function 3. Alegendr.m computing angle functions and function 4. MieCoeff.m Mill coefficient calculation function 5. Amp.m calculate the scattering amplitude recovery function 6. DebyeIntensity.m Debye series expansion model painted coated particle scattering angle- light intensity diagram)

说明：  matlab代码 适用于鲸鱼寻优算法，初级教程(Matlab code for whale optimization algorithm, primary tutorial)

利用matlab实现GMSK，调制出各个时间段的波形。如基带波形，相位波形，GMSK波形等(Using matlab to achieve GMSK, modulation of the waveform each time. Such as baseband waveform, phase, waveform, GMSK waveforms)

Supermarket cashier system .doc(Supermarket cashier system )

此代码产生一个16QAM信号，通过高斯白噪声信道后，对其使用常模盲均衡算法，最后输出星座图和收敛图。(This code generates a 16QAM signal, through the white Gaussian noise channel, the norm for its use of blind equalization algorithm, the final output constellation map and the convergence plan.)

人工神经网络进行数字卡片识别，Matlab环境(Artificial neural network for digital identification card)

说明：  搭建了精准的车辆模型，可以与Carsim中车辆模型进行对比，验证模型的正确性。(An accurate vehicle model is built, which can be compared with the vehicle model in Carsim to verify the correctness of the model.)

有关TANNER软件的使用入门介绍，很不错的书籍(For TANNER introduction to the use of software, very good books)

扩频通信，从电磁波利用来看，与一般现有的常规通信方式完全不同。扩频通信利用伪随机编码把信息数据（窄带信号）的频谱进行扩展，形成宽带的低功率谱密度信号发射，使用不同的伪随机序列编码，不同通信用户可在同一频段、同一时间工作，互不影响或干扰极小地进行通信。(Spectrum, from the electromagnetic waves used term, and the general existing conventional means of communication is entirely different. Spread spectrum communication using pseudo-random code to the information data (narrowband signal) to extend the spectrum, the formation of low-power spectral density broadband signal transmission, using different pseudo-random sequence of coding, different communication users at the same frequency band, at the same time work, mutual does not affect or interfere with a very small way to communicate.)