QAM_16

matlab在数学建模中的应用，有许多有用的算法，可以帮助需要参加数学建模工作的人快速建立模型并求解(matlab mathematical modeling, there are many useful algorithms, people need to participate in the mathematical modeling can help to quickly build the model and solving)

典型连续信号和离散信号的时频分析，包括：单位冲激信号、单位阶跃信号、矩形脉冲信号、正弦信号、指数序列等等(Typical continuous signal and discrete signal frequency analysis, including: unit impulse signal, the unit step signal, rectangular pulse signal, sinusoidal signal, the index sequence, etc.)

很好的超声声场仿真软件，由丹麦理工超声实验室编写。(a good ultrasound simulating software, DTU ultrasound lab. )

基于matlab中simulink的频率合成器的设计，主要结构包括鉴相器，低通滤波器，压控振荡器(simulink based franquence synthesis,consisted of pdf,lpf,vco)

比例导引弹道仿真，目标方向速度可变，非插值法，xy面投影，xz面投影均遵循比例导引，合成后构成三维图形。(Proportional navigation trajectory simulation, variable speed target direction, non-interpolation method, the xy plane projection, the xz surface projection are follow the proportional navigation guidance, synthetic After a three-dimensional graphics.)

主要介绍了MATLAB命令，并对其进行了一定总结。对掌握相应的函数有所帮助。(Mainly introduces the MATLAB command, and gain a certain sum. Corresponding function of the master help.)

说明：  这是一份介绍MATLAB的WORD版教程，里面有具体的实例，对于初学者很有用，欢迎大家下载学习。(This is a description of the WORD version of MATLAB tutorial, there are specific examples useful for beginners, are welcome to download the study.)

应用matlab仿真改进A*算法在三维地形上的寻径过程(Application matlab simulation on improved A* algorithm in three-dimensional terrain routing process)

本函数主要用于计算两个参考数列与待测矩阵之间灰色关联度，返回值为综合关联度 综合关联度系数设默认为0.5(This function is mainly used to calculate the gray correlation between the number of columns and the two reference test matrix, the return value is the comprehensive correlation degree overall correlation coefficient of 0.5 set by default)

Campbell figure is very good method in solving nonlinear dynamics(this code gives a good approximation method to get Campbell figure)