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Planar SAS for Sea Bottom and Subbottom Imaging: Concept Validation in Tank

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4 Author(s)
Belkacem, A. ; Faculte des Sci. de Monastir ; Besbes, K. ; Chatillon, J. ; Zakharia, M.E.

The paper deals with a new concept of imaging technique based on planar synthetic aperture sonar (P-SAS). P-SAS processing takes advantage of the overlap of both ping-to-ping and track to track footprints to improve the imaging resolution in both directions. After describing the method, its implementation is discussed. The exact implementation [three-dimensional (3-D)] is defined and an approximated and faster approach [2timestwo-dimensional (2-D)] is then proposed. The gain in computation time and the possible loss in performances (resolutions, echo amplitude) are investigated by simulating a simple point target. The point spread function is studied in details. The new concept is finally validated by tank experiments (scale about 100) for both proud and buried target imaging

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Oceanic Engineering, IEEE Journal of  (Volume:31 ,  Issue: 3 )