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说明：  水声原理，超级经典水声学教材，学习必看，水声学基本理论(Acoustic principles, super classic acoustics materials, learning must see, the basic theory of acoustics)

matlab code for SEP protocol

incidencia normal ondas planas simulación en el dominio del tiempo

四旋翼无人机sliding mode backstepping代码(Four-rotor UAV sliding mode backstepping code)

根据Richard.J.Cameron在论文综合N+2耦合矩阵的代码，主要的不同就是进行了去归一化，能够画出真实物理频率的频响曲线(Synthesis the N+2 coupled Matrix ,and which different from the former is thar I change the normalization frequency into reality frequency )

机器人运动和行走仿真，实现既定的运动轨迹(Robot simulation)

DPSK信号的调制解调Matlab代码实现的一个例子(采用正交调制解调)，方法简单可靠，使用性强(DPSK signal modulation and demodulation of a Matlab example code (using quadrature modulation and demodulation), a simple and reliable methods, the use of strong)

求图形图像梯度的程序，方便简洁，轻松解决，效率高(make it)

傻瓜型matlab教程，手把手教你使用matlab。 (Fool matlab tutorial taught you how to use matlab.)

this file contains some m-files about calculating the fractional fourier transform