chirp-

霍夫曼变换，是一种可变长编码方式.Huffman树是二叉树的一种特殊转化形式。(huffman_core)

说明：  四种常见的归一化方法，归一化效果不错。应用在matlab环境下。(Four common normalization method, normalized results are good. Used in the matlab environment.)

现代信号谱分析 minnorm MATLAB 算法例程(spectral analysis of signals)

菲涅尔透镜的matlab程序 对于衍射光学元件设计有重大帮助(Fresnel lens matlab program for diffractive optical element design has significant help)

基于matlab的相场模拟程序，希望对各位有所帮助，如有不对，还请批评指正(Matlab-based phase field case, you want to help, if wrong, criticism and)

covolutional turbo coides

一个帮助外汇交易者判断交易方向的信号，思路是进行突破交易，结合布林带通道和KD指标，KD上涨过程中过滤做空信号，KD下跌过程中，过滤做多信号。(A signal to help foreign exchange traders to judge the transaction direction, train of thought is a breakthrough deal with Bollinger channel and KD index, filter the short signal KD increases, KD falls in the process, filtering the signal to do more.)

电磁场数值计算的作业代码和文档，绘制了一个立方体空间中电磁场变化情况(Job electromagnetic field numerical calculation code and documentation, draw a cube space electromagnetic field changes)

此为三相正弦波PWM逆变器电路，由IGBT元件构成，可实现三相逆变仿真。(PWM inverter)

说明：  带约束的多目标遗传优化算法NSGA-II(Constrained Multi-objective Genetic Algorithms NSGA-II)