EmFDTD-v1.2r1

基于分数阶傅里叶变换的线性调频信号的自适应时频滤波，希望对大家有用(Based on Fractional Fourier Transform Linear FM signal adaptive time-frequency filtering and hope for all of us)

以重力异常为例，对重力异常曲线进行圆滑和求导数。(This is a matlab code.It about smooth and derivative algorithm.)

说明：  此代码包括牛顿法和梯度下降法的实现过程，最优化以及算法中常见的问题解决方式(This code includes the process of Newton method and gradient descent method)

自己编写的振动响应计算的matlab程序，可以运行，结果正确。(dynamic response of the system using matlab。)

多维随机数的生成方法，一维随机数生成方法，高维随机数的生成方法(Generation methods of multidimensional random number, one-dimensional random number and high-dimensional random number)

高等边界元法理论里面在求解弹性力学二维三维程序，(Advanced boundary element program)

说明：  《遗传算法及其在电力系统中的应用》华中科技大学版("Genetic Algorithms and Their Applications in Power Systems" 2002)

自己编写的关于水声实验插值的程序，给大家借鉴一下。(I have written on the underwater acoustic experiments interpolation procedure, we learn from you.)

说明：  牛顿法又称牛顿-拉弗森方法（Newton-Raphson method），是一种在实数域和复数域上近似求解方程的方法。本程序收敛速度快，迭代步数可取大一些(Newton method, also known as Newton-Raphson method, is an approximate method for solving equations in real and complex fields. The program has fast convergence speed so the number of iteration steps can be larger.)

此程序是用多重散射理论计算二维声子晶体的结构的Fortran代码。(This program is multi-dimensional phonon scattering calculated crystal structure Fortran code.)