Lax_Wendroff

用matlab读取.dxf文件。本站原有代码dxf2coord_20.m中对于圆弧只能读出其圆心坐标及半径，缺少圆弧起始角及终止角，并不能在应用中实际用起来。修改后可以读出圆弧的起始角和终止角(the script can offer start angle and end angle of an arc,which are unable to access in an earlier script dxf2coord_20.m 。)

用曲线拟合的方式估计线性调频信号的初始频率及其调频斜率。得到的效果比较好。(Curve fitting way to estimate the initial frequency and chirp rate of the linear FM signal. Get better.)

说明：  matlab中，对常微分方程求解，ode45函数的应用(In MATLAB, to solve ordinary differential equation, the application of ode45 function)

本文介绍了直接序列扩频系统中数字Costas环的设计与实现，用来实现载波同步的闭环算法(This paper introduces the direct sequence spread spectrum digital Costas loop in the design and implementation to achieve closed-loop carrier synchronization algorithm)

基于均匀线阵的，利用延迟的方法进行信号方位角与频率的联合估计，采用MUSIC算法(Based on uniform linear array, and methods of use of the delay signal azimuth and frequency of joint estimation using MUSIC algorithm)

建立cost231仿真模型函数，cost231是一种无线信道(Cost231 simulation model-building function, cost231 is a wireless channel)

this program is implementation of TOPSIS algorithm

《MATLAB图像处理实例详解》源代码 第二章( MATLAB image processing example explanation Source Code Chapter II)

读入COMSOL软件所生成的二维mphtxt三角形网格文件，读入相关网格的节点、三角形单元，边界信息。调用此函数时应将包含相关的路径与文件名的字符串作为输入参数。包 中包含了一个m函数文件与一个示例网格数据文件。 (read the information of 2-d triangle mesh file--*.mphtxt generated by COMSOL. The input parameter is the path and name of mesh file. A matlab source file and mesh file is included in it.)

watermarking audio mp3