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产生两不迥频率的信号，并对两信号作复数FFT变换，找出频率为50Hz的信号对其进行能量计算(Two distant signal is not generated frequency, and two signals for complex FFT transform to identify the frequency of 50Hz signal to calculate its energy)

ACA_TSP是用蚁群算法（ant colony algorithm）解决旅行商问题（travelling salesman problem）。文件打开后运行ACA_TSP.m文件即可得到结果，代码中有详细注释，方便修改。运行示例已经保存为图片附在压缩包中。(ACA_TSP is to solve the traveling salesman problem (travelling salesman problem) ACO (ant colony algorithm). Run ACA_TSP.m file to get the file to open the result, the code has detailed notes, easy to modify. Run the sample has been saved as a picture attached to the compressed package.)

用Matlab语言实现基于小波DWT域水印技术(Matlab language using DWT domain watermarking technique based on wavelet)

实现基于贝叶斯阈值的小波图像去噪算法，相比较其它的小波去噪算法而言，去噪效果非常好。(Wavelet image denoising based on Bayesian threshold, compared with other wavelet denoising algorithm, the de-noising effect is very good.)

this is a matlab based simulation of grid connected PV power plant

说明：  瞬时测频的基础知识、多信道法瞬时测频、鉴频法瞬时测频、干涉仪比相法瞬时测频、驻波鉴相法瞬时测频、瞬时测频编码、数字计算法瞬时测频(Instantaneous Frequency Measurement of the basic knowledge, multi-channel method of instantaneous frequency measurement, frequency Instantaneous Frequency Measurement Act, interferometer phase method than the Instantaneous Frequency Measurement, standing-wave phase Instantaneous Frequency Measurement Act, Instantaneous Frequency Measurement encoding, digital calculation of Instantaneous Frequency Measurement)

WSN 经典定位算法 包括： Centoid, Bounding_box, Grid_Scan, RSSI, DV_hop, MDS_MAP，APIT-WSN(Centoid, Bounding_box, Grid_Scan, RSSI, DV_hop, MDS_MAP，APIT-WSN)

说明：  多元统计分析过程下的主元个数的计算，运用于pca以及pls的数据分析算法中(the calculation of principal components)

A matlab code to compute Moody s friction factor

这是一个关于abaqus子程序二次开发的学习程序，其适用于初学umat的同学。(this is a secondary development for abaqus,it is a easy material model)