Browse > Article
http://dx.doi.org/10.7776/ASK.2017.36.5.300

A broadband detection algorithm using cross-correlation of two split beams for cylindrical array sonar  

Kwak, ChulHyun (Agency for Defence Development)
Publication Information
The Journal of the Acoustical Society of Korea / v.36, no.5, 2017 , pp. 300-304 More about this Journal
Abstract
In a cylindrical sonar, a conventional broadband energy detector has limitations in the separation of adjacent targets. In this paper, a broadband detection algorithm using cross-correlation is applied to the cylindrical sonar to improve the bearing resolution. The proposed algorithm uses split beamforming before broadband detection processing using cross-correlation to generate half beams. The time delay obtained from the peak of correlation between half beams is used to estimate the bearing of target. Simulations demonstrate the improved performance of the proposed algorithm against the conventional algorithm.
Keywords
Broadband detection; Cross-correlation; Split beamforming; Bearing resolution; Passive sonar;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 R. P. Hodges, Underwater Acoustics: Analysis, design and performance of Sonar (Wiley, West Sussex, 2011), pp. 1.
2 R. O. Nielsen, Sonar Signal Processing (Artech House, Norwood, 1991), pp. 150-157.
3 Y. Shefeng, and M. Yuanliang, "High-resolution broadband beamforming and detection methods with real data," Acoustical Science and Technology, 25.1, 73-76 (2004).   DOI
4 S. M. Kogon, "Robust adaptive beamforming for passive sonar using eigenvector/beam association and excision," Proc. IEEE SAM, 33-37 (2002).
5 C. Bao, "Robust high resolution dominant mode rejection (DMR) beamformer for passive sonar," Proc. ACOUSTICS Gold Coast, Australia: Austral. Acoust. Soc., 523-525 (2004).
6 M. Bono, B. Shapo, P. McCarty, and R. Bethel, "Subband energy detection in passive array processing," Proc. IEEE ASAP, 25-30 (2001).
7 T. S. Kim, Y. S. Kim, Y. G. Kim, and S. T. Moon, "Receivin g signal level measurement based weighting method for broadband energy detection"(in Korean), J. Acoust. Soc. Kr. 32, 532-540 (2013).   DOI
8 R. E. Zarnich, "A fresh look at broadband passive sonar processing," Proc. Seventh Annual ASAP '99 Workshop, 99-103 (1999).
9 S. Stergiopoulos and A. T. Ashley, "An experimental evaluation of split-beam processing as a broadband bearing estimator for line array sonar systems," J. Acoust. Soc. Am. 102, 3556-3563 (1997).   DOI
10 Y. W. Ryu, E. C. Jeong, and S. Y. Chun, "Analysis on noise correlation of triplet line array sensors in the east sea" (in Korean), J. Acoust. Soc. Kr. 34, 479-486 (2015).   DOI