Possibilities of detection and identification objects located on the sea bottom by means of a simple sidescan sonar

• Autorzy: Łukaszewicz D. , Rowiński L.
• Języki publikacji: EN

Abstrakty

EN

Several underwater tasks require detail visualisation of a water space and bottom features. Search and identification of sea mines or explosives are good examples of such activity. To achieve high capability of detection and correct identification, high accuracy and resolution are required. One of the valuable tools, that can be used for acoustic visualisation are side scan sonars. They are in use since early beginning of underwater activity, but it is only recently that applications of high frequency, high definition sonars are being investigated. First research results show a need regarding better understanding of equipment specification. The aim of a research, reflected in this paper, is to study possibilities of detection and identification of objects located on the sea bottom or slightly buried by means of a side-scaning sonar. The sonar considered is installed on Remotely Operated cable controlled Vehicle (ROV) or Autonomous Underwater Vehicle (AUV) that introduces important limitations to size, weight and power consumption of sonar system. Theoretical evaluation of sonar parameters and definition of information needed for detection and recognition of selected types of object are required for this purpose. For experimental evaluation of theoretical consideration typical industrial equipment has been selected. Tritech International Sea King Side Scan Sonar provides basic facilities. It is modified to allow direct comparison of two images obtained simultaneously from two transducers working at different frequencies.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2005
• Tom: Vol. 8
• Strony: 111--116
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Łukaszewicz D.

• Faculty of Ocean Engineering & Ship Technology Gdańsk University of Technology 80-952 Gdańsk, Narutowicza 11/12, Poland

autor

Rowiński L.

• Faculty of Ocean Engineering & Ship Technology Gdańsk University of Technology 80-952 Gdańsk, Narutowicza 11/12, Poland

Bibliografia

• [1] Kilian L., Analiza warunków wykrywania i zdolności rozdzielczej sonaru bocznego, Instytut Telekomunikacji Politechniki Gdańskiej, Gdańsk 1979
• [2] Riyait V.S., Lawlor M.A., Comparison of the Mapping Resolution of the ACID Synthetic Aperture Sonar with Existing Sidescan Sonar Systems, IEEE OCEANS’94,III-559-III-564, 1994
• [3] Sternlicht D., Pesaturo J.F., Synthetic Aperture Sonar: Frontiers in Underwater Imaging, Sea Technology, p. 27-32, November 2004
• [4] Wilcox T.E., Fletcher B., High-Frequency Sonar For Target Re-Acqusition and Identification, Sea Technology, p. 41-45, June 2004,
• [5] Alais P., Ollivier F. et al., A high resolution Sidescan Sonar, IEEE OCEANS 94, p.I- 340 - I-343, November 1994
• [6] Perry S.W., Applications of Image Processing to Mine Warfare Sonar, DSTO Aeronautical and Maritime Research Laboratory, Melbourne Victoria 3001 Aubtralia, February 2000.
• [7] Thekkathala J., Spruance J.C., Side-Scan Targets: Image Analysis, Database Management, Sea Technology, p. 57-64, September 1992
• [8] Waite A.D., Sonar for practising engineers, John Wiley & Sons Ltd, England, 2002.