BP_PID

太阳位置计算，计算太阳角度，高度角，方位角，真太阳时间(Sun position)

Joannopoulos "Photonic crystals. Molding the flow of light" - one of the best books on photonic crystals(Joannopoulos "Photonic crystals. Molding the flow of light"- one of the best books on photonic crystals)

基于matlab做的三维射线追踪的源代码。供大家交流之用。(based on Matlab do 3D ray tracing the source code. For exchange purposes.)

基于matlab的JPEG压缩源码，含压缩与解压缩，还有与原图的对比测试。(Matlab-based JPEG compression source, including compression and decompression, as well as comparison with the original image.)

切比且夫线阵幅度加权方向图计算,画出二位方向图,图示中标示出增益,副瓣电平等(Ratio and the linear amplitude weighted directional graph computation, draw two direction map, marked gain the diagram, the sidelobe level etc. )

matlab编写的蚁群算法程序，供大家使用参考。(ant colony algorithm matlab preparation procedures for the use of U.S. reference.)

A simple program to find the discrete fourier transform(DFT) and inverse discrete fourier transform(IDFT) of a signal.

使用matlab编程的，内点惩罚函数法优化程序(Using matlab programming, interior-point optimization procedure penalty function method)

Partial differential equations student solutions manual

该matlab代码是一个函数。它接受频域电磁场二维空间分布（用矩阵表示），包括幅度和相位，返回avi文件，显示二维电磁场的动画。(The code is a matlab function. It accepts frequency domain two-dimensional spatial distribution of electromagnetic field (with matrix), including the amplitude and phase, back avi files, the animation shows two-dimensional electromagnetic fields.)