98732963pi_4_DQPSK

数学建模赛题的Matlab解决程序，模拟车灯的映照情况(Mathematical Modeling Contest in the Matlab problem solving program to simulate the reflection of light conditions)

此文件包含有四个基于matlab源程序,可直接运行.其说明如下 P0301：数字图像矩阵数据的显示及其傅立叶变换 P0302：二维离散余弦变换的图像压缩 P0303：采用灰度变换的方法增强图像的对比度P0304：直方图均匀化(This file contains four based on the matlab source code can be directly run. Its description is as follows P0301: digital image data display matrix and its Fourier transform P0302: Two-dimensional discrete cosine transform image compression P0303: the use of gray-scale transformation method contrast-enhanced images P0304: Histogram of homogenization)

说明：  在地球物理勘探中将原始的SEG-Y数据导入(In geophysical exploration will be the original SEG-Y data import)

该程序介绍的是40节电电力系统的前推回代法潮流计算过程(The program is presented in the first 40 power-saving electric power system to push back on behalf of the current calculation method)

MATLAB中ODE算法的完整例程，可以参照学习，并且可以直接改动参数，可以运行成功。(Complete routine in MATLAB ODE algorithm can refer to learn, and you can directly change the parameters, you can run successfully.)

2 level Voltage inverter in simulink

说明：  求希尔伯特谱的程序，可以出图像，可以运行。(A program that can run Hilbert spectrum.)

Simple, yet simplistic, Lattice Boltzmann (LB) MATLAB implementation. D2H9, BGK, omega = 1, laminar flow in a 2D channel used as benchmark. Requires Image Processing Toolbox. The code is not optimized for memory nor for speed, i.e. not efficient at all. However, it is better than almost nothing (i.e. the present MATLAB situation at Feb 2005 ? as far as I know) Optimization for memory should consider only dry locations.

水声通信信道参数的生成以及水声信道的仿真，该包内包括set_channel_params.m和channel_simulator.m两个函数。仿真器包含了大规模和小规模衰落两种。(This package consists of Matlab codes set_channel_params.m and channel_simulator.m and a series of Matlab functions that will be called by the main codes. )

basic matlab codes 1