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Preliminary investigations on implementation of technology of broadband signals for marine biology and sediments recognition

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This paper describes potential applications of broadband acoustic signals for marine biology and fisheries and acoustic precise profiling of the upper layer of sediments. Comparisons of the results of conducted experiments employing the same experimental setup but with different signals are presented. In each of experiments short pulses of CW signals and long pulses of up/down chirp signals were used. The basic theory of FM signals as well as some of the factors that must be considered when implementing this type of signal in actual systems are described.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
143--152
Opis fizyczny
Bibliogr. 12 poz., rys.
Twórcy
autor
autor
autor
autor
  • *Institute of Oceanology, PAS, Powstańców Warszawy Str. 55, 81-712 Sopot, Poland
Bibliografia
  • [1] J. E. Ehrenberg, T.C. Torkelson, FM slide (chirp) signals: a technique for significantly improving the signal-to-noise performance in hydroacoustic assessment systems, Fisheries Research, vol. 47, 193-199, 2000.
  • [2] M. Jakobsson, First high-resolution chirp sonar profiles from the central Arctic Ocean reveal erosion of Lomonosov Ridge sediments, Marine Geology, vol. 158, 111-123, 1999.
  • [3] Z. Klusek, J. Tegowski, J. Szczucka, “Characteristic properties of bottom backscattering in the southern Baltic Sea at ultrasound frequencies,” Oceanologia, vol. 36, , 81–102, 1994.
  • [4] Z. Klusek, P. Majewski, A. Dragan, CW and Chirp Signals Bottom Backscattering in PEZ of the Baltic Sea, (this issue).
  • [5] Z. Klusek, J. Tęgowski, Chirp signals in investigations of acoustical properties of sediments in the southern Baltic Sea (Sygnały świergotowe w badaniach własności akustycznych sedymentów w Bałtyku Południowym), Proc. of XII Symposium on Hydroacoustics, Jurata 1995, 153-160 (in Polish), 1995.
  • [6] L. R. LeBlanc, S. Panda, S.G. Shock,, Sonar attenuation modeling for classification of marine sediment, Journal of Acoustical Society of America, vol. 91 (1), 116-126, 1992.
  • [7] G. Michaelov, S. Sarkani, L.D. Lutes, "Spectral characteristics of nonstationary random processes - a critical review", Structural Safety, 21, pp.223-244, (1999).
  • [8] S.G. Schock, L.R. LeBlanc, L.A. Mayer, Chirp sub-bottom profiler for quantitative sediment analysis, Geophysics, vol. 54, 445-450, 1989.
  • [9] T.K. Stanton et al., Inferring fish orientation from broadband acoustic echoes, ICES Journal of Marine Science, vol. 60, 524-531, 2003.
  • [10] I.R. Stevenson, C. McCann, P.B. Runciman, Using broad-band chirp sonar it is possible to estimate the attenuation of acoustical waves in sea sediments in real time. Marine Geophysical Researches , vol. 23, 277-298, 2002.
  • [11] J. Tęgowski, Z. Łubniewski, The use of fractal properties of echo signals for acoustical classification of bottom sediments, Acta Acustica, vol. 86, 2000.
  • [12] P.A. van Walree et al., Acoustic seafloor discrimination with echo shape parameters: A comparison with the ground truth, Continental Shelf Research, vol. 25, 2273-2293, 2005.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWM1-0007-0017
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