燕山大学学报Issue(2)：156-162,7.DOI:10.3969/j.issn.1007-791X.2014.02.012
水声信号的调制方式识别
Recognition of underwater acoustic signal modulation
摘要
Abstract
In this paper, the recognition algorithm of different modulation signals from different underwater acoustic channels is studied. The bispectrum matrix of underwater signal is computed by indirect bispectrum algorithm, and it is decomposed to extract the eigenvalue and eigenvector.The eigenvector of the maximum eigenvalue is selected as the characteristic vector.The characteristic vector of the sample signals selected from different underwater acoustic channels is extracted to make inner product operation with the characteristic vector of the signals to be identified. The maximum inner product value corresponds to one modulation, which is the modulation scheme of the signal to be identified. The experiment shows that the algorithm can realize the classification and recognition of underwater signals from different channels, and identify more than 90%of the signals in the condition of high SNR.关键词
水声信号/双谱/特征提取/分类识别Key words
underwater acoustic signal/bispectrum/characteristic extraction/classification and identification分类
信息技术与安全科学引用本文复制引用
杨柳,赵晓群,徐静云..水声信号的调制方式识别[J].燕山大学学报,2014,(2):156-162,7.基金项目
中国人民解放军总参谋部预研课题 （）
