waveletlegall53

说明：  book related to electronic 1(korea version)

基于Matlab环境，对雷达信号，基于高斯模型的回波进行仿真。(Based on the Matlab environment, the radar signal, based on the Gauss model of echo simulation.)

1、利用自相关法找出含有大量数据的周期信号的周期 2、利用互相关对齐含有大量数据的多路采样信号以便分析 3、使用分段平滑经过求导后的含有干扰的图像曲线(1, using the autocorrelation method contains large amounts of data to identify the period of the periodic signal 2, using the cross-correlation contains a large amount of data aligned with the sampling signal for the multiplexed analysis, the use of segmented through derivative after smoothing with interference by the image curve)

pca与ica相结合的特征选择,进行主成分分析以后，再对所得特征进行独立成分分析(the combination of pca and ica for feature selection，after Principal component analysis, the resulting characteristics is has a independent component analysis )

基于DVB-T标准,COFDM调制系统的利用导频信号进行符号粗同步,仿真条件：68个OFDM符号，64QAM调制，莱斯信道(Based on DVB-T standard, COFDM modulation system using pilot symbols rough signal synchronization, simulation conditions: 68 OFDM symbols, 64QAM modulation, Rice channel)

生成反射系数的，希望对大家有帮助,是我们实验室用做地震资料处理流程中合成地震反射系数用的，具体看程序就知道。(you can see chinese explane,)

Low density parity check matrix(Description A program written for generating LDPC matrix in the as pattern as discussed in the research paper , " Time varying periodic convolutional codes with low density parity check matrix" by Alberto jiménez Felströ m and Kamil Sh. zigangirov IEEE Transaction on information theory vol 45 no 6 sept 1999. pages 2181-2191)

用DWT实现二维小波变换：对图像进行二维小波分解，显示分解结果，最后重构源图像并显示结果 (Achieved using two-dimensional wavelet transform DWT: two-dimensional wavelet decomposition of the image, showing decomposition results, and finally reconstruct the source image and display the results)

admittance matrix caluculation for load flow analysis universal applicable to any no. of nodes

对信号进行小波包分解，得到节点的小波包系数。然后对每个节点系数进行重构。(Wavelet packet decomposition is used to get the wavelet packet coefficients of the nodes. Then the coefficients of each node are reconstructed.)