gps_acquisition_theoretic

提出了一种多迸制频移键控(M娲K)信号调制分类及解调方法，选取截获接收机输出的MFSK信 号的时频脊线作为分类特征，利用无监督聚类算法求取最佳聚类数M．利用时频脊线的Ham：小波变换 估计码元宽度，并且利用对应最佳聚类数的聚类中心确定抽判门限，通过对时频脊线抽样判决，实现了 MFSK信号的解调．理论分析和对实际信号的处理结果证明了此算法的可行性．(new algorithm is proposed for elassillcation and demodulation of MFSK signals．The ridge of time— frequency representation of MFSK signals is analyzed．Modulation elassi_fieation is realized by using the unsupervised clustering algorithm to determine the optimal nulnllt2r of clusters．In order to demodulate MFSK signals，the Haar wavelet transform is used to estimate the code—width and the centers of optimal clusters are used to determine thresholds．Theoretical analysis and practical signal processing results justify the robusticity and the efficiency of the new classification and demodulation Mgorithm．)

文件里面是关于地震反演的文档和MATLAB程序实例，适合反演初学者使用学习。(Document which is a document and MATLAB instance on seismic inversion, for beginners to learn the inversion.)

system for DC controller

open loop model for dc motor....

This is the parser of NMEA encoded data from GPS it separates lat and long

radar matlab simulation

小波包能量代码，利用db1小波将信号分解和重构，然后计算小波系数的平方，进行正则化(Wavelet packet energy code, the use db1 wavelet signal decomposition and reconstruction, and then calculate the square of wavelet coefficients, the regularization)

曲线拟合工具箱curefit的说明文档。(Curve Fitting Toolbox curefit the documentation.)

huffmann code..........................................

ecganalysis to analysis ecg signal