TY - GEN
T1 - Envelope spectrum analysis of underwater target radiated noise based on harmonic wavelet
AU - Wang, Lu
AU - Lei, Bo
PY - 2012
Y1 - 2012
N2 - Traditional methods can hardly extract the modulated information of underwater target radiated noise accurately. In this paper, a new analysis method of broadband noise envelope based on harmonic wavelet is proposed because it has advantages of band-pass filtering and Hilbert transform in the frequency domain. By using harmonic wavelet transformation, the target radiated noise will be decomposed with multi-resolution and high-precision, so that the frequency band which contains the strongest modulation will be obtained, and the modulated information can be demodulated easily. The experiment results of the oceanic signal show that, compared with the traditional envelope analysis methods, the proposed method can extract the modulated information of target radiated noise faster and more accurately, which will be helpful to improve the underwater target radiated noise signal detection and feature extraction.
AB - Traditional methods can hardly extract the modulated information of underwater target radiated noise accurately. In this paper, a new analysis method of broadband noise envelope based on harmonic wavelet is proposed because it has advantages of band-pass filtering and Hilbert transform in the frequency domain. By using harmonic wavelet transformation, the target radiated noise will be decomposed with multi-resolution and high-precision, so that the frequency band which contains the strongest modulation will be obtained, and the modulated information can be demodulated easily. The experiment results of the oceanic signal show that, compared with the traditional envelope analysis methods, the proposed method can extract the modulated information of target radiated noise faster and more accurately, which will be helpful to improve the underwater target radiated noise signal detection and feature extraction.
KW - Envelop analysis
KW - Harmonic wavelet transformation
KW - High precision
KW - Modulated information
KW - Target radiated noise
UR - http://www.scopus.com/inward/record.url?scp=84876468647&partnerID=8YFLogxK
U2 - 10.1109/ICoSP.2012.6491638
DO - 10.1109/ICoSP.2012.6491638
M3 - 会议稿件
AN - SCOPUS:84876468647
SN - 9781467321945
T3 - International Conference on Signal Processing Proceedings, ICSP
SP - 215
EP - 218
BT - ICSP 2012 - 2012 11th International Conference on Signal Processing, Proceedings
T2 - 2012 11th International Conference on Signal Processing, ICSP 2012
Y2 - 21 October 2012 through 25 October 2012
ER -