aCM_HJY_100veh_wchange_120221

noise removal using spatial filter

ASK,QPSK,FSK,MSK等通信中经典的调制程序，用matlab编写，非常适合通信领域专业参考(ASK, QPSK, FSK, MSK modulation and other communications in the classic procedure, using matlab prepared, very professional reference for communication)

快速傅里叶变换，很实用的！！希望能帮助你(Fast Fourier transform, it is useful! ! Hope you can help)

File is from the wavelet toolboxs, decomposes an image with wavelet transform.

说明：  控制受控电流源模拟光伏电池PV、IV外特性(Controlled current source analog control external characteristics of photovoltaic cells)

忽略系统阻尼，建立工程车辆的扭转振动模型，进行振型分析。(Ignoring the system damping, the engineering vehicle torsional vibration model is established to do the vibration analysis.)

说明：  求解方阵所有的特征值以及特征值对应的特征向量(all eigenvalue and the corresponding eigenvectors for square matrix)

说明：  matlab的时频工具箱，里面有很多的例子。很有参考价值的(matlab time frequency toolbox, there are many examples. Worthy)

介绍如何使用matcom实现matlab和C++的混合编程，利用matcom将.m文件直接转成.cpp文件(matcom,matlab,c++)

利用自然梯度算法，ML法能够很好的估计信号的信噪比,考虑雨衰 阴影 和多径影响。( Use of natural gradient algorithm, ML estimation method can be a good signal to noise ratio, Consider shadow rain attenuation and multipath effect.)