DocumentCode
2990463
Title
DEMONgram Enhancement Based on Hough Transformation
Author
Gao Xin ; Liu Qi-Jun
Author_Institution
Navig. Fac., Navy Submarine Acad., Qingdao, China
fYear
2010
fDate
25-27 June 2010
Firstpage
5107
Lastpage
5109
Abstract
Line spectrum in DEMONgram of ship-radiated noise is a set of linear. According to this characteristics, this paper provides a enhancement technique of DEMONgram based on Hough transform for line spetrum detection. Weighting coefficient for each DEMONgram can be determined without knowing the propeller shaft frequency. It solved the problem of evaluating definition of DEMONgram. The analysis of the Sea test data shows the signal to noise ratio of propeller shaft and blade frequency are noticeably improved and line spectrum is clearer, attaining the goal of enhencing DEMONgram.
Keywords
Hough transforms; acoustic noise; propellers; ships; spectral analysis; DEMONgram enhancement; Hough transform; blade frequency; line spectrum detection; propeller shaft; sea test data; ship-radiated noise; signal to noise ratio; Computers; Navigation; Propellers; Shafts; Sonar; Transforms; Underwater vehicles; DEMONgram; Hough transformation; enhencement; subband;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-6880-5
Type
conf
DOI
10.1109/iCECE.2010.1236
Filename
5630400
Link To Document