Browse > Article

Difference in Peak and Integrated Target Strengths Depending on Signal Duration Using a Time-Domain Physical Diffraction Theory  

Lee, Keun-Hwa (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
Park, Sang-Hyun (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
Yang, In-Sik (Agency for Defense Development)
Oh, Won-Tchon (Agency for Defense Development)
Seong, Woo-Jae (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.3E, 2009 , pp. 88-92 More about this Journal
Abstract
The target strength (TS) is calculated from the measured signal using the definition of the peak TS (PTS) or the integrated TS (ITS). These two types of TS sometimes give different results depending on what the pulse duration is. In this paper, we model the scattered time signal by the numerical code based on the physical diffraction theory and examine the effect of the pulse duration on the value of PTS or ITS. The transformed TS (TTS) for the frequency domain is used as a reference solution.
Keywords
Target strength; Physical diffraction theory; PTS; ITS;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 K. Lee, W. Seong, and Yongtaek Joo, 'Modeling of scattering from targets in an oceanic waveguide using Kirchhoff/diffraction method,' J. Acous. Soc. of Am .. vol. 124, PP. 3757, 2008   DOI
2 A. D. Waite, Sonar for practising engineers, John Wiley & Sons, Ltd., West sussex, 2002
3 C. Jenn, Radar and laser cross section engineering, AIAA Inc., Washington, DC, 1995
4 Y. Choi, K. Shin, J. You, J. Kim, W. Joo, Y. Kim, J. Park, S. Choi, and W. Kim, 'Numerical modeling and experimental verification for target strength of submerged objects,' J. Korean Soc. of Ocean Engineers, vol. 19, PP. 64-70, 2005   과학기술학회마을
5 W. B. Gordon, 'Far field approximation to the Kirchhoff-Helmholtz representations of scattered fields,' IEEE Transactions on antennas and propagation, AP-23, PP. 590-592, 1975   DOI
6 P. Ufimtsev, Fundamentals of the physical theory of diffraction, Wiley-IEEE press, New Jersey, 2007
7 K. Kim, D. Cho and W. Seong, 'Simulation of time-domain acoustic wave signals backscattered from underwater targets,' J. Acous. Soc. Kr., vol. 27, no. 3, PP. 140-148, 2008   과학기술학회마을
8 R. J. Urick, Principles of underwater sound, McGraw-Hili Book, 1983
9 K. Lee and W. Seong, 'Time-domain Kirchoff model for acoustic scattering from an impedance polygon facet,' J. Acous. Soc. Am .. Vol. 126, PP. EL14-EL21, 2009   DOI   ScienceOn