Viscoelastic

说明：  郭照立D2G9(D2G9)

说明：  共轭梯度法求解线性方程组,主要采用FR共轭梯度法(solve liner solutions from CG)

说明：  编程教程，帮助入门学者学习建模，从初级开始，逐步深化，非常有帮助(Programming tutorials, help beginners learn modeling, from the beginning, gradually deepen, very helpful)

说明：  曲线的三次样条插值，在非首尾节点处具有三次光滑性质(Curve cubic spline interpolation, in both nodes with non-smooth nature of the three)

数值分析的牛顿法,是用C编写的,希望大家互相参考!!1(Pleiades值tub cavity Xu Yang Lai Hey, Did using C met写cavity, submerged mode希望deceive gaze intently EC banana!! 1)

频域二维卷积算法，通过在频域用fft计算，加速了卷积的实现过程(Frequency domain of two-dimensional convolution algorithm, by calculating the frequency domain using fft and accelerate the realization of the convolution process)

这是数值分析中拟上三角法的实现程序,c语言(This is the numerical analysis to be on the triangulation procedures, language c)

计算按频率抽取的基4快速傅里叶变换算法，与基2FFT相比，基4FFT的乘法量约减少25 。(Calculating frequency taken by fast Fourier transform algorithm base 4, compared with the base 2FFT the base 4FFT multiplication about 25 less.)

用FORTRAN编制的交错网格化数值模拟程序，生成共炮点理论地震记录。(using FORTRAN compiled by the staggered grid of numerical simulation program to produce a total theoretical shot seismic record.)

调试通过可以使用，已调制信号计算其普相关密度，空间目标识别，采用PM算法。( Debugging can be used, Modulated signals to calculate its density Pu-related, Space target recognition algorithm using PM.)