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中国大学生数学建模竞赛历年试题MATLAB程序(China Undergraduate Mathematical Contest in Modeling historical questions MATLAB program)

创新性的使用烟雾粒子浓度，来探测火灾，基于图像处理(Innovative use of smoke particle concentration, to detect fires, based on image processing)

最原始的灰色预测，matlab程序，可直接使用(Most original gray forecast, matlab program, can be used directly)

数组运算示例，演示二维数组的存储方式（不同于其它语言）以及数组的运算和输出方法。(example of array operations. Demostration of storage (unlike other languages) , operation and output method of two dimensional array.)

用MUSIC算法作谐波恢复，该算法精确度非常高，能够分辨0.013Hz的频率分量。(Using MUSIC algorithm for harmonic retrieval, the algorithm accuracy is very high, to distinguish the frequency components 0.013Hz.)

FFT编程实例 进行FFT变换，显示频谱图 (FFT transform FFT programming examples show that the spectrum graph)

this folder contains a matlab code for wmr coding.

用内插实现定时功能。算法中有一些不足，但可以作为一个参考。(Using interpolation to achieve timing. Algorithm has some deficiencies, but can be used as a reference.)

说明：  Floyd最短路径算法，任意找出两点的最短距离，可以在MATLAB上运行。(Floyd shortest path algorithm, and find out the most short of any two points, can run in MATLAB. )

A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.Black-body radiation is distributed in energy (or frequency) in a manner set by the temperature T. A black body in thermal equilibrium emits electromagnetic radiation called black-body radiation. The radiation is emitted according to Planck s law, meaning that it has a spectrum that is determined by the temperature alone (see figure at right), not by the body s shape or composition. Practical materials emit energy at a fraction of black-body energy levels called the emissivity of the surface. By definition, a black body in thermal equilibrium has an emissivity of ε = 1.0. A source with lower emissivity independent of frequency often is referred to as a gray body. Construction of black bodies with emissivity as close to one as possible remains a topic of current interest. This code can be used to simulate the black body radiation.