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Aiming at the disadvantages of current methods to estimate sediment geoacoustic parameters, a geoacoustic estimation scheme is presented, in which used are the bottom back reflection signals from multiple angles sampled with a multi-beam parametric array sub-bottom profiler. Firstly, the sediment thickness and sound speed are estimated with difference frequency backscatter signals separately from upper and lower sediment surfaces with vertical and outboard direction. Then, the sediment attenuation coefficient is estimated by use of the two backscatter signals with different difference frequencies from upper and lower sediment surfaces with vertical direction. Finally, the sediment property impedance is estimated with primary frequency backscatter signals from upper sediment surface with vertical direction and followed by the computation of the sediment density, thereby solving its coupling with sound speed. The efficiency is tested through pool experiment.
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Keywords:
- geoacoustic parameters estimation /
- backscatter signals /
- multiple angles /
- parametric array
[1] Grelowska G, Kozaczka E, Kozaczka S, Szymczak W 2012 11th European Conference on Underwater Acoustics Edinburgh, UK, July 2-6, 2012 p1446
[2] Yang K D, Chapman N R, Ma Y L 2007 J. Acoust. Soc. Am. 121 833
[3] Dettmer J, Dosso S E 2012 J. Acoust. Soc. Am. 132 2239
[4] Tan B A, Gerstoft P, Yardim C, Hodgkiss S 2013 J. Acoust. Soc. Am. 134 312
[5] Neumann P, Muncill G 2004 IEEE J. Oceanic Eng. 29 13
[6] Dettmer J, Dosso S E, Holland C W 2007 J. Acoust. Soc. Am. 122 161
[7] Li Z L, Zhang R H 2007 Chin. Phys. Lett. 24 471
[8] Yang K D, Ma Y L 2009 Acta Phys. Sin. 58 1798 (in Chinese) [杨坤德, 马远良 2009 58 1798]
[9] Jiang Y M, Chapman N R 2010 IEEE J. Oceanic Eng. 35 59
[10] Schock S G 2004 IEEE J. Oceanic Eng. 29 1200
[11] Siemes K, Snellen M, Amiri-Simkooei A R, Simons D G, Hermand J P 2010 IEEE J. Oceanic Eng. 35 766
[12] Hefner B T, Jackson D R, Williams K L, Thorsos E I 2009 IEEE J. Oceanic Eng. 34 372
[13] Ohta K, Okabe K, Morishita I, Frisk G V, Turgut A 2009 IEEE J. Oceanic Eng. 43 526
[14] Theuillon G, Stéphan Y, Pacault A 2008 IEEE J. Oceanic Eng. 33 240
[15] Liu B S, Lei J Y 1993 Principles of Underwater Acoustics (Harbin: Harbin Engineering University Press) 77 (in Chinese) [刘伯胜, 雷家煜 1993 水声学原理 (哈尔滨: 哈尔滨工程大学出版社) 第77页]
[16] Innomar 2009 Technologie GmbH SES2000 User’s Guide (V 2.8) 2009 181
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[1] Grelowska G, Kozaczka E, Kozaczka S, Szymczak W 2012 11th European Conference on Underwater Acoustics Edinburgh, UK, July 2-6, 2012 p1446
[2] Yang K D, Chapman N R, Ma Y L 2007 J. Acoust. Soc. Am. 121 833
[3] Dettmer J, Dosso S E 2012 J. Acoust. Soc. Am. 132 2239
[4] Tan B A, Gerstoft P, Yardim C, Hodgkiss S 2013 J. Acoust. Soc. Am. 134 312
[5] Neumann P, Muncill G 2004 IEEE J. Oceanic Eng. 29 13
[6] Dettmer J, Dosso S E, Holland C W 2007 J. Acoust. Soc. Am. 122 161
[7] Li Z L, Zhang R H 2007 Chin. Phys. Lett. 24 471
[8] Yang K D, Ma Y L 2009 Acta Phys. Sin. 58 1798 (in Chinese) [杨坤德, 马远良 2009 58 1798]
[9] Jiang Y M, Chapman N R 2010 IEEE J. Oceanic Eng. 35 59
[10] Schock S G 2004 IEEE J. Oceanic Eng. 29 1200
[11] Siemes K, Snellen M, Amiri-Simkooei A R, Simons D G, Hermand J P 2010 IEEE J. Oceanic Eng. 35 766
[12] Hefner B T, Jackson D R, Williams K L, Thorsos E I 2009 IEEE J. Oceanic Eng. 34 372
[13] Ohta K, Okabe K, Morishita I, Frisk G V, Turgut A 2009 IEEE J. Oceanic Eng. 43 526
[14] Theuillon G, Stéphan Y, Pacault A 2008 IEEE J. Oceanic Eng. 33 240
[15] Liu B S, Lei J Y 1993 Principles of Underwater Acoustics (Harbin: Harbin Engineering University Press) 77 (in Chinese) [刘伯胜, 雷家煜 1993 水声学原理 (哈尔滨: 哈尔滨工程大学出版社) 第77页]
[16] Innomar 2009 Technologie GmbH SES2000 User’s Guide (V 2.8) 2009 181
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