util_mod

dft频率测量算法，主要针对电网频率的测量(the dft frequency measurement algorithm)

计算流体力学经典程序Roe格式，每步有说明，适合初学者(Computational Fluid Dynamics classical procedures Roe scheme, each step is described, suitable for beginners)

时域有限差分 2维 完全匹配层 犹他州大学(fdtd method 2D pml perfect mached layed www.ece.utah.edu)

外文资料里面的源代码，使用高阶累积量对MPSK信号进行调制识别，wolf 方法计算李雅普诺夫指数。( Foreign materials inside the source code, Using high-order cumulants of MPSK signal modulation recognition, wolf calculated Lyapunov exponent.)

一阶偏微分方程的基础知识，很容易入门,很多工程处理要用到的(Introduce the basic knoeledge of Partial Differential Equation)

gauss jordan method. not my own program but i just want to share it.

矩阵求逆，使用fortran语言编写，希望能对有需要的朋友有所帮助(Matrix inversion, written in FORTRAN language, hoping to help friends in need)

实现矩阵转置并且方便观看，第二个程序用于进行对海表面高度SSH进行EOF分析，第三个程序进行海陆点分离并写为NC文件(Matrix transpose and convenient to watch the second program for the EOF analysis of sea surface height SSH third program separation of land and sea, and write for NC files)

天线组阵中相位差的递推最小二乘估计与滤波(Phase array antenna group recursive least squares estimation and filtering)

有限元计算软件Abaqus USDFLD子程序在复合材料中强度分析中的应用。(Finite element analysis software Abaqus USDFLD subroutine in the composite material strength analysis applications.)