Search results for: hydroacoustics

• Impact of Microphytobenthos Photosynthesis on the Characteristics of the Echo Signal from Baltic Sandy Sediments

  Publication

  • N. Gorska
  • E. Kowalska-Duda
  • J. Marszal
  • J. Schmidt
  • Z. Klusek

  - Archives of Acoustics - Year 2015

  The understanding the influence of biological processes on the characteristics of the signals backscattered by the sea floor is crucial in the development of the hydroacoustical benthic habitat classification techniques. The impact of the microphytobenthos photosynthesis on the acoustical backscattering properties of the Atlantic sandy sediments was previously demonstrated by Holliday et al. (2004) and Wildman and Huettel (2012). To...

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• HYDROACOUSTIC NOISE MEASUREMENTS

  Publication

  • E. Kozaczka

  - Year 2013

  The paper deals mainly with investigation of underwater noise that propagation is in shallow water. In this paper has been presented the experimental investigation results concerning the distribution of the sound field pressure generated by moving ships in the shallow water at the small distance from the ship. The main acoustical characteristics describing features of the field are spectrograms in pseudo 3D system – distance and frequency...

• Identification of hydroacoustic wave sources of ship in motion

  Publication

  • E. Kozaczka
  • J. Domagalski

  - Polish Maritime Research - Year 2010

  This paper deals with results of identification tests of acoustic field spectrum of underwater noise generated by ship in motion. The field is connected with acoustic activity of ship mechanisms and devices in operation. Vibration energy generated by the mechanisms and devices is transferred through ship structural elements to surrounding water where it propagates in the form of acoustic waves of a broad band of frequencies. In...

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• Investigation of the underwater noise produced by ships by means of intensity method

  Publication

  • E. Kozaczka
  • J. Domagalski
  • I. Gloza

  - Polish Maritime Research - Year 2010

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• Zespół badawczo-rozwojowy systemów hydroakustycznych

  Research Teams

  • Department of Marine Electronic Systems

  * systemy hydroakustyczne (nawigacyjne, echolokacyjne i komunikacyjne) * przetworniki ultradźwiękowe i anteny hydroakustyczne * propagacja fal akustycznych w morzu i wodach śródlądowych * prowadzone są również prace badawcze w zakresie akustyki teoretycznej, przetwarzania sygnałów analogowych i cyfrowych i techniki ultradźwiękowej * Katedry ma bogate, wieloletnie doświadczenie w budowie systemów hydroakustycznych, poczynając od...