UEL and UMAT

合肥工业大学数值分析（计算方法A）中高斯—塞德尔算法的实现(Gauss- Seidel Algorithm)

说明：  用四阶Runge-Kutta法解延迟微分方程组，用到的朋友看一下啊(Using fourth-order Runge-Kutta method for delay differential equations, a friend used to look at ah)

二阶精度的FDTD正演算法，可用于井间电磁波探测模拟(The accuracy of the second order FDTD are algorithm Can be used to detect simulation between Wells electromagnetic waves )

通过换能器测量得到材料的信号到达时间，根据一些已知条件以及声学公式计算材料的声速(Measured by the transducer signal arrival time of the material, according to some known conditions, and calculated acoustic velocity materials)

有PMUSIC 校正前和校正后的比较，sar图像去噪的几种新的方法，实现了图像的加水印，去噪，加噪声等功能。( A relatively before correction and after correction PMUSIC, Several new methods sar image denoising, Realize image watermarking, de-noising, plus noise and other functions.)

说明：  数值分析中的chebyshev拟合程序，学习数值分析的同学可以参考参考(Numerical Analysis of chebyshev fit program, students study and numerical analysis can refer to reference)

说明：  地球物理大师Claebout的几个有用的程序，包括偏移程序。用fortran语言写的(Several geophysical Claebout Masters useful procedure, including the migration process. Fortran language used to write the)

说明：  集合卡尔曼滤波(EnKF) 数据同化方法可以避免了EKF 中协方差演变方程预报过程中出现的计算不准确和关于协方差矩阵的大量数据的存储问题,最主要的是可以有效的控制估计误差方差的增长,改善预报的效果。(Ensemble Kalman Filter (EnKF) data assimilation methods can be avoided in the EKF covariance forecasting the evolution equation arising in the course of the calculation is not accurate and on the covariance matrix of a large amount of data storage problems, the most important and effective control can be estimated error variance of the growth, improvement in forecasting results.)

说明：  数值分析 显示算法 非线弹性 滞回曲线(Numerical analysis showed that the algorithm the linear elastic hysteresis curve)

仿真啁啾光栅投射及反射特性。建构于解析解的基础之上。(Properties of chirped fiber grating)