PCAL1

implementation to calculate the snr of a mri signal

matlab仿真的频率捷变雷达信号，进行了时域显示和脉压分析，适用于对雷达信号处理学习的同学。(matlab simulation of frequency-agile radar signals for display and pulse time-domain analysis for radar signal processing for the students to learn.)

tikz manual use of tikz code in latex to draw good circuit diagrams.

this code is for speech recognition

PCA程序，可用于学习交流，也可用于特征脸的获取等(PCA program can be used for the exchange of learning, it can also be used to obtain the characteristics of the face, etc.)

说明：  matlab源代码，是重要的地震勘探源代码，工具箱程序(matlab source code, it is important to seismic exploration source code, toolbox procedures)

这是根据《最优阵列处理技术》一书中，第三章零点调向编写的代码。是自己写的。比网上给出的那个随书附带例程要详细。并且在关键的地方附加了注释。各位刚开始看这个比较迷茫的可以参考(failed to translate)

系统辨识、用于ARXM模型的辨识、matlab程序(System the identification, ARXM model the identification)

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.)

Finite Impluse Response