Change search
ReferencesLink to record
Permanent link

Direct link
Comparison between whitened generalized cross correlation and adaptive filter for time delay estimation with scattered arrays for passive positioning of moving targets in Baltic Sea shallow waters
Responsible organisation
2005 (English)Conference paper (Refereed) Published
Abstract [en]

Results from an acoustic measurement campaign in shallow waters (at 22 meters depth) are given. Eight hydrophones, placed at the seabed, were used simultaneously to investigate how different distances between hydrophones affect the Time Delay Estimation (TDE). In order to position targets two TDE methods were applied. The used methods were the Generalized Cross Correlation (GCC) function weighted by the Phase Transform (PHAT) and an adaptive Normalized Least Mean Square (NLMS) filter estimating the TDE between pairs of sensors. The two methods gave approximately the same result, except for the largest baseline where the GCC PHAT performed better. In the study we found that increasing separation distance decrease the bandwidth of coherence between the signals, however the study also indicated that scattered arrays with large baselines has better positioning capability than those with small baselines.

Place, publisher, year, edition, pages
Washington: IEEE , 2005.
Keyword [en]
acoustic measurement, adaptive filters, array signal processing, delay estimation, hydrophones, least mean squares methods, oceanographic techniques, position control, underwater sound
National Category
Signal Processing
URN: urn:nbn:se:bth-10245Local ID: 0 933957 34 3OAI: diva2:838326
Available from: 2012-09-18 Created: 2006-02-06 Last updated: 2016-05-24Bibliographically approved

Open Access in DiVA

fulltext(525 kB)3738 downloads
File information
File name FULLTEXT01.pdfFile size 525 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Pettersson, MatsClaesson, Ingvar
Signal Processing

Search outside of DiVA

GoogleGoogle Scholar
Total: 3738 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 29 hits
ReferencesLink to record
Permanent link

Direct link