CH6

this file is about band structure of 3d photonic crystal.in this program we use the pwe methode for calculation of band structure

说明：  利用CEEMD进行时间序列的分解，可获得各种时间尺度的信号(The decompisition of time series with CEEMD)

Chomsky文法的判断。0型1型2型3型的判断(Chomsky)

it is a matlab code for stateflow.and it is c type of state flow.

DateConvert：简单而快速的日期转换 DateConvert转换DATESTR（0）格式的日期向量或序列号和日期向后。 Matlab的DATENUM，DATEVEC和DATESTR接受各种不同意见，但结果他们是缓慢的。如果输入格式正是众所周知，转换可以更快： DATENUM（ 17 - 10 - 2009 11时08分23秒 ）：2.97秒 DateConvert（ 17 - 10 - 2009 11时08分23秒 ， 号码 ）：0.039秒 =>“1.3％（1000环，1.5GHz的奔腾- M的，利用Matlab 7.7） DateConvert不*不*验证作为Matlab的日期函数输入日期： DATEVEC（ 32 - 2 - 2008 25:62:63 ）的答复[2008 3 4 2 2 7] DateConvert（ 32 - 2 - 2008 25:61:67 ， 载体 ）的答复[2008 2 32 25 61 67]！ 因此DateConvert几乎微不足道，但对速度进行了优化。我需要时间排序200 000邮票，并从217个减少到11秒的时间。 请运行单元测试TestDateVec检查的有效性和速度。 测试：利用Matlab 6.5，7.7，7.8，winxp的，32位。 纯Matlab代码，所以兼容性的MacOS，Linux操作系统，64位预期。 英语月份名称是必要的。(DateConvert: Simple but fast date conversion DateConvert converts the DATESTR(0) format to a date vector or serial date number and backwards. Matlab s DATENUM, DATEVEC and DATESTR accept a variety of inputs, but in consequence they are slow. If the input format is exactly known, the conversion can be much faster: DATENUM( 17-Oct-2009 11:08:23 ): 2.97 sec DateConvert( 17-Oct-2009 11:08:23 , number ): 0.039 sec => 1.3 (1000 loops, 1.5GHz Pentium-M, Matlab 7.7) DateConvert does*not* validate the input date as Matlab s date functions: DATEVEC( 32-Feb-2008 25:62:63 ) replies [2008 3 4 2 2 7], DateConvert( 32-Feb-2008 25:61:67 , vector ) replies [2008 2 32 25 61 67] ! So DateConvert is nearly trivial, but optimized for speed. I needed it for sorting 200 000 time stamps and reduced the time from 217 to 11 sec. Please run the unit-test TestDateVec to check validity and speed. Tested: Matlab 6.5, 7.7, 7.8, WinXP, 32bit. Pure Matlab code, so compat)

利用古典显式差分格式求解抛物型偏微分方程(parabolic partial differential equation)

说明：  MIMO无线通信系统容量的研究与仿真，可以参考的毕业设计(Capacity of MIMO wireless communication system research and simulation, can refer to the graduation)

此程序用来一个BPSK的调制信号。程序后面都有详细的注解，帮助理解！(This program is used to a BPSK modulated signal. Procedures are followed with detailed comments, to help understand!)

脉冲压缩，用于雷达信号处理，chirsp信号的时域和频域压缩算法。(range compress，used for radar signal process。)

计算差分盒维数的matlab程序,是根据一篇文章写出来的，我也是下载的，看着不错就穿上来了，但还不知这样求维数对不对？(difference calculation of the box dimension Matlab procedure is based on an article written by, I also downloaded, Seeing good to wear it, but it has not requested such dimension that right?)