NDLI: Pre-processing algorithm and P-SAS processing applied to underwater acoustic data of a 2D scanning on a dump site in the sea

Content Provider	IEEE Xplore Digital Library
Author	Belkacem, A. Jammali, A. Besbes, K. Zakharia, M.
Copyright Year	2009
Description	Author affiliation: Ecole Navale French Naval Academy BREST France (Zakharia, M.) \|\| Microelectronics & Instrumentation Laboratory, University of Monastir, Faculty of Sciences of Monastir, Tunisia (Belkacem, A.; Jammali, A.; Besbes, K.)
Abstract	In underwater imaging, Planar Synthetic Aperture Sonar (P-SAS) technique has been validated on both simulated and tank data. It showed a significant improvement of 3D representation of bottom and sub-bottom. In this paper we present its application to real data acquired during sea experiments on a dump site in the Baltic sea. Data were acquired during a European project “SITAR” (Seafloor Imaging and Toxicity: Assessment of Risks caused by buried waste). The transmitter was a Topographic Parametric Sonar (TOPAS) fixed on a ROV which position was monitored. Two central frequencies were explored, 10 kHz and 20 kHz. As P-SAS algorithm was designed for data obtained on a regular planar grid important modification were required to handle real sea data and “realistic” navigation conditions (irregular grid): a “rearrangement” algorithm was designed for preprocessing actual data and correct trajectory disturbances (in 2D). This algorithm is the re-projection of data positions to a new (virtual) regularly grid. The algorithm was validated on tank experimental data prior to application to sea data. P-SAS processed data will be presented. A strata representation technique was used for analyzing the seafloor and the sub-bottom and for locating buried objects on the scanned dump site.
Starting Page	1
Ending Page	6
File Size	981805
Page Count	6
File Format	PDF
ISBN	9781424443451
DOI	10.1109/SSD.2009.4956765
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-23
Publisher Place	Tunisia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Sonar navigation preprocessing algorithm strata representation Synthetic aperture sonar Remotely operated vehicles Condition monitoring Transmitters Acoustic imaging Sea floor underwater imaging Frequency Underwater acoustics buried objects P-SAS algorithm
Content Type	Text
Resource Type	Article

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