Techniques for detecting and characterising objects on and under the sea bed

• Autorzy: Woodward B.
• Konferencja: Proceedings of the 2 nd EAA International Symposium on Hydroacoustics 24-27 May 1999, Gdańsk-Jurata POLAND
• Języki publikacji: EN

Abstrakty

EN

Active sonar systems are usually used to locate objects in mid-water, while passive systems are used to determine the range and direction of sources of sound Some systems can yield information about the seabed, for example a depth sounder can give a plof of depth along the travel direction, while a side scan sonar can give a two-dimensional image of the sea bed This paper describes the application of a parametric sonar system that can generate a narrow beam with enough acoustic power to penetrate the water/sea bed interface. Subsequent acoustic scattering at deeper interfaces may yield information about the underlying sediments or the detection and ultimately the characterisation of buried objects such as lost cargo, mines, pipelines or shipwrecks.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 1999
• Tom: Vol. 2
• Strony: 73--78
• Opis fizyczny: Bibliogr. 3 poz., rys., tab.

Twórcy

autor

Woodward B.

• Department of Electronic and Electrical Engineering, Loughborough University, LE II 3TU, U.K.

Bibliografia

• [1] B. Woodward, A.D. Goodson, J.C. Cook and P.A. Lepper, Sea bed characterisation using non-linear acoustics, Proc. 2nd European Conf. on Underwater Acoustics, Copenhagen, Denmark, 4-8 July (1994).
• [2] B. Woodward, J.e. Cook, A.D. Goodson and P.A. Lepper, A phase-steered parametric array for sub-boftom profiling, Proc. 6th lnt. Conf. on Electronic Engineering in Oceanography, Churchill College, Cambridge, 19-21 July (1994).
• [3] J.C. Cook, A.D. Goodson, P.A. Lepper and B. Woodward, The design and evaluation of a phase-steered parametric sonar system intended for sediment characterisation, J. Soc. Underwater Technology, 22, pp. 43-54 (1997).