matlab的simulink仿真，一个关于通信系统的仿真设计，文件太大，这是第七部分...

关于图像分割的一个代码，最小生成树Prim算法，能够实现相应功能，拿出来与大家共享(Image Segmentation on a code, Prim minimum spanning tree algorithm, can achieve the corresponding functions, and show to share with you)

this is the free hand draw. using this project design, you can draw a free hand drawing. but it still has error and you need to fix the error. i don t know what is the error on this project.

超声在多层复合结构中传播的stoneley波的相关程序(Ultrasound propagation in multi-layer composite structure of stoneley waves associated procedures)

分别使用MVDR、Root-Music和ESPRIT三种方法对信号频率估计进行仿真实验，其中噪声为复正弦加性白噪声，给出正弦信号频率的估计值。(Using MVDR, Root- Music and ESPRIT three methods to estimate the signal frequency simulation experiment respectively, which is suitable for complex sinusoidal additive white noise noise, sine signal frequency estimate is given.)

说明：  对比了dv-hop基本算法，和加入pso后得算法。由于结果是随机产生的，不能保证每次得结构都能提高，但大部分时候，比基本算法得定位准确度好。(DV hop algorithm is compared with PSO algorithm. Because the results are generated randomly, it can not be guaranteed that every time the structure can be improved, but most of the time, the positioning accuracy is better than the basic algorithm.)

计算认知无线系统中跳频信道接入方案有效容量的函数。(Computational Cognitive radio system hopping channel access scheme effective capacity of the function.)

通过设置不同的参数利用Matlab软件仿真了不同场景下的系统性能 (This document suggests a user’s guide to a MATLAB application which simulates a Spatial Channel Model (SCM) based on reference [1] with some minor adjustments. It focuses on how to use the Graphical User Interfaces (GUIs) and the functions of the application and avoids going into specifics about the nature of the parameters as this is done analytically in the reference document)

解决了非线性函数的逼近问题,实现了BP神经网络在非线性函数逼近中的应用。得出了信号的频率与隐含点之间，隐含点与函数逼近能力之间的关系——隐含层神经元数目越多。(Solved the problem of nonlinear function approximation, and realized the application of the BP neural network in nonlinear function approximation. Between signal frequency and implicit points are drawn, implied the relationship between the point and the function approximation ability, the more number of hidden layer neurons. )

此程序适合对数字基带信号的仿真，并对两径信道传递函数曲线分析(This program suitable for digital base-band signal simulation, and the two-path channel transfer function curve analysis)

说明：  匹配追踪MP算法，实现信号稀疏分解，运用的是投影思想(Matching up MP to achieve sparse signal decomposition)