035 - Classification of underwater objects by means of an acoustic method
Kozaczka E.
Abstract
The underwater object detection, identification and classification that are immersed or buried by means of an acoustic method have been of great interest for a few decades by acousticians marines and archaeologist. There are used the objects e.g. mines, amphorae in a finite cylindrical shape or similar. The method of active location (echolocation) is very popular in detection of the immersed or buried objects. In the shape of reflected sounding pulse one can observe the ridged part of sounding pulse and also so-called tail. In this tail we can find a substantial feature of the object that scattered the sound pulse. The paper deal with the basic problem connected with the free vibration of finite cylindrical steel shell immersed in water. There is described the simplified theoretical model of this problem and next the results of numerical investigations are presented. The final results are the acoustics characteristics obtained in the sea. These ones are compared to numerical results
Citation
Kozaczka E.: Classification of underwater objects by means of an acoustic method, CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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