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Chin. Phys. B, 2011, Vol. 20(5): 054301    DOI: 10.1088/1674-1056/20/5/054301
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Adaptive and optimal detection of elastic object scattering with single-channel monostatic iterative time reversal

Ying Ying-Zi, Ma Li, Guo Sheng-Ming
Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
Abstract  In active sonar operation, the presence of background reverberation and the low signal-to-noise ratio hinder the detection of targets. This paper investigates the application of single-channel monostatic iterative time reversal to mitigate the difficulties by exploiting the resonances of the target. Theoretical analysis indicates that the iterative process will adaptively lead echoes to converge to a narrowband signal corresponding to a scattering object's dominant resonance mode, thus optimising the return level. The experiments in detection of targets in free field and near a planar interface have been performed. The results illustrate the feasibility of the method.
Keywords:  iterative time reversal      resonant scattering      echo enhancement  
Received:  04 February 2010      Revised:  24 December 2010      Published:  15 May 2011
PACS:  43.30.+m (Underwater sound)  
Fund: Project supported by the Innovation Foundation of Chinese Academy of Sciences (Grant No. CXJJ-260).

Cite this article: 

Ying Ying-Zi, Ma Li, Guo Sheng-Ming Adaptive and optimal detection of elastic object scattering with single-channel monostatic iterative time reversal 2011 Chin. Phys. B 20 054301

[1] Prada C, Wu F and Fink M 1991 J. Acoust. Soc. Am. 90 1119
[2] Prada C, Thomas J L and Fink M 1995 J. Acoust. Soc. Am. 97 62
[3] Song H C, Kuperman W A, Hodgkiss W S, Akal T and Ferla C 1999 J. Acoust. Soc. Am. 105 3176
[4] Montaldo G, Tanter M and Fink M 2004 J. Acoust. Soc. Am. 115 776
[5] Prada C, Manneville S, Spoliansky D and Fink M 1996 J. Acoust. Soc. Am. 99 2067
[6] Sabra K G, Roux P, Song H C, Hodgkiss W S, Kuperman W A, Akal T and Stevenson J M 2006 J. Acoust. Soc. Am. 120 1305
[7] Isaacson D, Cheney M and Lassas M 2001 SIAM J. Appl. Math. 61 1628
[8] Hickling R 1962 J. Acoust. Soc. Am. 34 1582
[9] Flax L, Dragonette L R and Uberall H 1978 J. Acoust. Soc. Am. 63 723
[10] Bishop G C and Smith J 1999 J. Acoust. Soc. Am. 105 130 endfootnotesize
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