a_second_order_moment_method

该资料简述了matlab在数字信号处理中的应用(The information outlined matlab in digital signal processing applications)

扩展的kalman 滤波算法，使用matlab进行实现,由国外人士编写(Extended kalman filter algorithm, using matlab to achieve)

在均匀介质中，时间二阶空间四阶的有限差分声波方程正演程序。(In homogeneous medium, the second order time space fourth-order finite difference acoustic wave equation forward modeling program.)

直接使用MLS访问方式生成art迭代重建的投影系数，重建时，可以直接按序使用投影系数。(use MLS to create the projection matrix of art, so we can directly use the matrix to reconstruct image )

MDCT s program. Can be used with matlab software. Easy to compilate.

光波传输原理与技术（含有利用matlab进行仿真的代码和相应的结果）(Lightwave transmission principle and technology (with the use of matlab simulation code and corresponding results))

matlab上机实验用fft对信号作频谱分析(Signal using the fft spectrum analysis )

matlab 2012b 完美破解的方法，77个工具箱都可以用(matlab 2012b crack perfect way 77 toolbox can be used)

利用Matlab软件编写的轨道不平顺数据分析程序能够对轨检车测得的不平顺数据进行处理,得到功率谱密度分布函数.轨道不平顺分析程序包括轨道不平顺数据预处理、轨道不平顺谱分布函数计算以及根据实测的车体振动加速度,对轨道不平顺与车体振动加速度进行相干分析、提出对行车运行有不利影响的不平顺波长范围等.研究结果表明:车辆的动力特性与轨道不平顺有密切关系.高低不平顺对车体垂向振动影响显著,轨向不平顺对车体水平振动影响显著,水平不平顺对列车垂向、横向振动均有显著影响.(Matlab software written track irregularity data analysis program able to track inspection car irregularity measured data are processed to obtain the power spectral density function. Track Irregularities track irregularity analysis procedures including data preprocessing, track irregularity spectrum distribution function calculations, and based on the measured vibration acceleration of the vehicle, with the body of track irregularity acceleration coherent analysis, have an adverse impact on traffic running irregularity wavelength range, etc. the results show that: the dynamic characteristics of the vehicle and the track irregularity closely related. rough along the vertical vibration of the vehicle significantly, rail irregularity vibration to levels significantly affect the body, the level of irregularity to train the vertical and horizontal vibration significantly affected.)

说明：  能够实现双树复小波包变换，有一段仿真例子可以供大家参考(Realization of dual tree complex wavelet packet transform)