AM_Mod.m

Double Pendulum simulation and description

说明：  本程序为BP算法在一个简单分类中的应用,主要针对异或问题,有助于对本算法的理解()

《精通simulink系统仿真与控制》，学习simulink不可多得的好书，已经很难找了(" Proficient simulink simulation and control" , learning simulink rare books, has been hard to find)

说明：  ESPRIT方法进行DOA估计，各种参数见程序内部的参数设置，只是简单的ESPRIT程序，而非修正的ESPRIT方法(ESPRIT DOA estimation methods, see the program within the parameters set of parameters, but simply the ESPRIT program, rather than the ESPRIT method of correction)

卷积码编码译码MATLAB仿真程序，比较详细的源代码(Convolutional coding and decoding MATLAB simulation program)

quadrature amplitude modulation (QAM64)

修改Windows95 GUI函数的源代码 (The source for modifying windows 95s GUI function)

定向能武器相关的文章 学习新的军事技术的好文章 了解知识(directed-energy weapons-related articles to learn new military technology in good understanding of knowledge)

说明：  字典树的基本功能是用来查询某个单词（前缀）在所有单词中出现次数的一种数据结构，它的插入和查询复杂度都为O(len),Len为单词（前缀）长度，但是它的空间复杂度却非常高，如果字符集是26个字母，那每个节点的度就有26个，典型的以空间换时间结构。(The basic function of the dictionary tree data structure is used to query a number of times a word (prefix) appears in all the words, which insertion and query complexity are O (len), Len is a word (prefix) length, but its space complexity is very high, if the character set is 26 letters, and that the degree of each node will have 26, the typical structure of space for time.)

The objective is to demonstrate character/ symbol frequency distribution analysis (reference to the English language) on 2 vintage ciphers, namely Caesar cipher (a mono-alphabetic substitution cipher) and the Vigenere cipher (a poly-alphabetic substitution cipher).