Modeling forward acoustic scattering by underwater objects with experimental observation

被引：0
|
作者：
Lei B. [1 ]
Ma Y.-L. [1 ]
Yang K.-D. [1 ]
机构：
[1] Institute of Acoustic Engineering, Northwestern Polytechnical University
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2010年 / 31卷 / 07期
关键词：
Field perturbation; Forward scattering; Target strength; Virtual source;
D O I：
10.3969/j.issn.1006-7043.2010.07.028
中图分类号：
学科分类号：
摘要：
To research forward acoustic scattering by submerged targets in an underwater waveguide, a virtual source model for target scattering in waveguides was developed. Experiments were conducted in a water tank and a lake. The simulation results showed that forward scattered signal strength is stronger than backward scattered signal strength. Actual measured forward target strength was about 3dB less than the modeled result. The results of experiments in a lake showed that perturbations in the received field caused by forward scattering of a moving object can be observed in a periodic continuous Linear Frequency Modulation (LFM) signal.
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收藏
页码：990 / 994
页数：4
相关论文
共 10 条
  • [1] Ingenito F., Scattering from an object in a stratified medium, J Acoust Soc Am, 82, pp. 2051-2059, (1987)
  • [2] Makris N.C., A spectral approach to 3-D scattering in layered media applied to scattering spheres, J Acoust Soc Am, 104, pp. 2105-2113, (1998)
  • [3] Schmidt H., Virtual source approach to scattering from partially buried elastic targets, High Frequency Ocean Acoustics Conference, AIP Conference Proceedings, pp. 456-463, (2004)
  • [4] Ding L., Direct laboratory measurement of forward scattering by individual fish, J Acoust Soc Am, 101, 6, pp. 3398-3404, (1997)
  • [5] Ding L., Takao Y., Sawada K., Et al., Laboratory measurements of forward and bistatic scattering of fish at multiple frequencies, J Acoust Soc Am, 103, 6, pp. 3241-3244, (1998)
  • [6] Lei B., Yang K., Ma Y., Physical model of the acoustic forward scattering by cylindrical shell with laboratory measurement, Chinese Physics B, 19, 5, pp. 1-9, (2010)
  • [7] Matveev A.L., Spindel R.C., Rouseff D., Forward scattering observation with patially coherent spatial processing of vertical array signals in shallow water, IEEE Journal of Oceanic Engineering, 32, 3, pp. 626-639, (2007)
  • [8] Matveev A.L., Mityugov V.V., Complex matched filtered of diffraction sound signals received by vertical array, Acoustical Physics, 46, 1, pp. 80-86, (2000)
  • [9] Naluai N.K., Lauchle G.C., Gabrielson T.B., Et al., Bistatic sonar applications of intensity processing, J Acoust Soc Am, 121, 4, pp. 1909-1915, (2007)
  • [10] Urick R.J., Principles of Underwater Sound, pp. 312-314, (1967)
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