火力与指挥控制2011，Vol.36Issue(9)：161-164,4.
2(1/2)谱在直升机声信号特征提取中的应用
Application of Two and Half Spectrum in Feature Extraction of Helicopter Acoustic Signals
摘要
Abstract
A kind of definition of 4th-order cumulant diagonal slice (FOCDS) is introduced, the excellent advantages of FOCDS's fft transform in cubic phase coupling feature extraction are analyzed, and its estimation method is also described. It is used to extract the features of helicopter acoustic signals, which has cubic phase coupling. The simulation results show that the proposed method can analysis the information of cubic phase coupling, and it also shows that the method is much simpler and computes much faster, additionally, it has the advantage of reducing the Gaussian noise. The processed results of real data validate the efficient of this method.关键词
四阶累积量/直升机声信号/三次相位耦合/2(1/2)谱,特征提取Key words
4th-order cumulant, helicopter acoustic signal, cubic phase coupling, 2 -5-spectral, feature extraction分类
信息技术与安全科学引用本文复制引用
谭皇,高勇..2(1/2)谱在直升机声信号特征提取中的应用[J].火力与指挥控制,2011,36(9):161-164,4.基金项目
总装预研基金资助项目(JG2007056) （JG2007056）
