wudianchafen

基于全周傅立叶的实时阻抗测量 基于全周傅立叶的实时阻抗测量(Impedance measurement)

PB开发的计算器程序，适合初学者，比较简单，开发程序版本PB9.0(PB calculator program developed for beginners, is relatively simple, the development program version PB9.0)

一种基于多文档得图像合并技术，是信号处理的基础，PLS部分最小二乘工具箱。( Based on multi-document image obtained combining technique, Is the basis of the signal processing, PLS PLS toolbox.)

ansys-初应力-残余应力-焊接残余应力-ansys温度场(ansys-initial stress)

Evesen开发的scalarmodel，耦合了集合卡尔曼滤波算法和集合卡尔曼平滑算法(Scalarmodel coupled with Ensembled Kalman Filter and Ensembled Kalman Smoother)

二维粘弹性介质中波的传播的解析形式。应用Carcione等在1988年发表的《WAVE PROPAGATION SIMULATION IN A LINEAR VISCOELASTIC MEDIUM》一文中的方法，更加详细的介绍见英文描述。该代码对于做波场模拟的同学有很好的参考价值。( MATLABScript for obtaning the analytical solution for 2D wave propagation in a viscoelastic medium, based on the Appendix B of paper of Carcione et al. (1988)(1), corrected in (2). The source used is a Ricker wavelet in the y velocity component. A figure of the source temporal function and its inverse Fourier transform are provided to verify the good working of the method. Also works for elastic variables by substituting the values of vp and vs by real constant ones (vp_0 & vs_0). Attenuation is implemented by GMB-EK rheology presented in (4) and thoroughfully explained in (3). In order to make a proper comparison with numerical data it is recommended to either use the same rheology in both the numerical and the analytical. It is also possible to get an almost constant Q value by increasing a lot the number of mechanisms used in both the numerical and the analytical solutions, thus minimizing the effects of the Q fitting in the comparison.)

求解一维热传导方程，格式包括FTCS、BTCS、CNCS三种差分格式(solve one dimension heat transfer equation. )

说明：  计算时程信号数据的快速傅里叶变换，进行频谱分析(The fast Fourier transform of time history signal data is calculated and the spectrum analysis is carried out)

自适应滤波器的LMS算法实现，主要实现滤波和算法的方法。(adaptive filter)

matlab求解抛物方程源程序，包括真值、近似值与误差，最大误差随网格数变化(matlab solve the parabolic equations)