Abstract
According to Doppler shift of moving acoustic source signal, a method is proposed for identification of noise sources on underwater moving target with single hydrophone. The weak Doppler shift curves due to target moving are obtained by utilizing high accuracy ST-Chirp-z algorithm. Considering the sources with small frequency interval, high frequency resolution ST-ESPRIT algorithm is used to extract the Doppler shift curves. After curve smoothing with outlier removing and median filtering, the abeam time when noise sources have the nearest distance to hydrophone is estimated by least square method. Locations of multiple noise sources are obtained with the reference point of a beacon at last. The results of experiment in anechoic water tank showed the validity of this new method, and verified its high localization accuracy.
| Original language | English |
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| Pages | 83-88 |
| Number of pages | 6 |
| State | Published - 2011 |
| Event | Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011, APSIPA ASC 2011 - Xi'an, China Duration: 18 Oct 2011 → 21 Oct 2011 |
Conference
| Conference | Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2011, APSIPA ASC 2011 |
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| Country/Territory | China |
| City | Xi'an |
| Period | 18/10/11 → 21/10/11 |