data_annalysis

K-means algorithm which is used to find cluster given a dataset

短时傅里叶中加各种不同类型的窗来观察窗的形状(Short-time Fourier and Canada all the different types of windows to observe the shape of the window)

PID控制模块 由SIMULINK仿真建立 版本MATLAB7.0(PID control module from the SIMULINK simulation of the establishment version of MATLAB7.0)

implementation of FIR and IIR filters by matlab

用矩量法计算线天线的电磁场（MATLAB编程）(using the moment method of calculation of electromagnetic wire antenna (MATLAB))

WGS-84 -> ECEF ECEF -> WGS-84 极坐标系 -> ECEF ECEF -> 极坐标系(WGS-84-> ECEF ECEF-> WGS-84 polar-> ECEF ECEF-> polar)

说明：  将GPS得到的经纬度，大地坐标，通过高斯投影正算，得到平面直角坐标 文件大小不够，再增加了高斯投影的pdf文档(The longitude, latitude and geodetic coordinates obtained by GPS are corrected by Gauss projection, and the plane rectangular coordinates are obtained.)

普通通信信号bpsk,qpsk,qam调制解调(bpsk qpsk qam fsk gmsk modulation and demodulation)

基于小波的ICA-R算法，适合混合图像的分离。具有速度快等优势(Wavelet-based ICA-R algorithm, suitable for the separation of mixed images. With a speed advantage. )

说明：  CT三维重建程序代码，正常运行，适合研究这方面的初学者学习借鉴(CT three-dimensional reconstruction program code, normal operation, suitable for beginners to learn from this aspect)