Survey of Seafloor Targets with Varied Sizes by Multi Beam Sonar in Different Depth Water

Abstract:

Multi beam sonar needs complex data processing lying on human intervention to get accurate depth contour and low accuracy in sonar image which prevent its popular use in surveying seafloor targets. To survey seafloor target in different depth by GeoSwath, this article presents survey parameter setting method such as ping length, ship velocity to increase points over targets, navigation line parallel to heading of target during survey, adopting along track filter to depth data processing and using TVG control over amplitude data to get accurate depth grid and sonar image of seafloor target. Finally, the way is used to measure the artificial object in harbor and two ship wrecks at sea, which improve GeoSwath survey capability with compound detection and is helpful for make precise map for waterway. Also this work is helpful to achieve detecting seafloor objects fast, accurately, effectively in underwater large scale area during salvation and rescue task.

• Periodical: Applied Mechanics and Materials (Volumes 263-266)
• Pages: 909-914
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.263-266.909
• Online since: December 2012
• Authors: Li Hong Wu*, Wen Hai Xu, Wenbo Wang
• Keywords: Data Processing, GeoSwath Multi Beam Sonar, Large Scale and Fast Detection, Seafloor Target, Spatial Resolution, Survey Factors

References

[1] P.C. Wille: Sound Images of the Ocean in Research and Monitoring. (Springer,Berlin(2005) ).

[2] Q.L. Dong, Y.Z. Ou Yang Y.Y. Chen,et al: Measuring Bottom of Sea target with Side Scan Sonar and Multibeam Sounding System,Hydrographic Surveying and Charting,Vol. 29(5) (2009),pp.51-53.

[3] O. Bergem,E. Pouliquen, G. Canepa, N.G. Pace: Time Evolution Modeling of Seafloor Scatter. Journal of Acoustical Society of America, Vol. 105(1999),pp.3136-3141.

DOI: 10.1121/1.424644

[4] Y.C. Liu, F.M. Xiao, J.Y. Bao, et al. Introduction to Hyddrography. (Surveying and Mapping Press, Beijing,China (2006)).In Chinese.

[5] L. Fonseca, C. Brown, B. Calder, L. Mayer, Y. Rzhanov: Angular Range Analysis of Acoustic Themes from Stanton Banks, Ireland: a Link between Visual Interpretation and Multibeam Angular Signature. Applied Acoustics, Vol. 70(2009), pp.1298-1304.

DOI: 10.1016/j.apacoust.2008.09.008

[6] J.M. Preston: Automated Acoustic Seabed Classification of Multibeam Images of Stanton Banks. Applied Acoustics,Vol. 70(2009),pp.1277-1287.

DOI: 10.1016/j.apacoust.2008.07.011

[7] X.C Zhu, Y.C. Liu, F.M Xiao, et al:Full Coverage Resolution of Multibeam Echo Sounding.Science of Surveying and Mapping,Vol. 35 Supp1 (2010),pp.22-24.In Chinese.

[8] Y.G. Zou, J.S. Zhai, Y.C. Liu, et al: A Bottom Coverage Estimation Model Based on Trapezium for Multibeam System, Hydrographic Surveying and Charting,Vol. 30(2)(2010),pp.15-18. In Chinese.

[9] Z.C. Liu, X.H. Zhou, Y.L. Chen, G.H. Hu: The Development in the Latest Technique of Shallow Water Multibeam Sounding System,Hydrographic Surveying and Charting, Vol. 25(5)(2005),pp.67-70.In Chinese.

[10] GeoAcoustics Ltd:GeoSwath Plus Operational Manual 9-GS+ -6100/BE.2006.