Journal of the Korea Society for Simulation (한국시뮬레이션학회논문지)

The Korea Society for Simulation (한국시뮬레이션학회)
권호 표지
DOI QR코드

DOI QR Code

The Modeling and Simulation for Pseudospectral Time-Domain Method Synthetic Environment Underwater Acoustics Channel applied to Underwater Environment Noise Model

수중 환경 소음 모델이 적용된 의사 스펙트럼 시간영역 법 합성환경 수중음향채널 모델링 및 시뮬레이션

  • Received : 2016.05.16
  • Accepted : 2016.07.11
  • Published : 2016.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

It is necessary to analyze underwater acoustics channel(UAC) modeling and simulation for underwater weapon system development and acquisition. In order to analyze UAC, there are underwater acoustics propagation numerical analysis models(Ray theory, Parabolic equation, Normal-mode, Wavenumber integration). However, If these models are used for multiple frequency signal analysis, they are inaccurate to calculate result of analysis effectiveness and restricted for signal processing and analysis. In this paper, to overcome this problem, we propose simple/multiple frequency signal analysis model of the Pseudospectral Time-Domain Method synthetic environment UAC applied to underwater environment noise model as like as realistic underwater environment. In order to confirm the validation of the model, we performed the 9 scenarios simulation(4 scenarios of single frequency signal, 4 scenarios of multiple frequency signal, 1 scenario of single/multiple frequency signal like submarine radiated noise) for validation and confirmed the validation of this model through the simulation model.

수중환경에서 운영되는 무기체계 획득을 위한 설계/개발을 진행하기 위해 수중음향채널 모델링 및 시뮬레이션을 통한 분석은 필수적이다. 일반적으로 수중음향채널 분석을 위해 사용되는 수중음향 전파 수치해석 모델은 음선이론 법, 정규방식 법, 포물선방정식 법, 파수적분 법이 있으나 다중 주파수 분석일 경우 유효성과 신호처리 및 분석에 제한적이다. 본 논문은 단일 및 다중 주파수 분석 및 신호처리 및 분석이 용이한 기존 의사 스펙트럼 시간영역 법 수중음향 수치해석 모델에 수중환경 소음 모델을 적용하여 실제 수중환경과 유사한 합성환경 수중음향채널을 모델링 하였다. 이렇게 구현된 합성환경 수중음향채널 모델의 유효성을 확인하기 위해 단일 주파수 신호 시나리오 4가지 다중 주파수 신호 시나리오 4가지 및 잠수함 기동에 따른 방사소음 분석 시나리오 시뮬레이션을 통해 의사 스펙트럼 시간영역 법 합성환경 수중음향채널 모델 유효성을 확인하였다.

Keywords

References

  1. Republic of Korea Ministry of National Defense, "National Defense Military Force Development Task Instruction ", 2014
  2. Finn B. Jensen, William A. Kuperman, Michael B. Porter and Henrik Schmidt, "Computational Ocean Acoustics, Second Edition", Springer, 2011
  3. DTaQ, Technical Report DTaQ-10-2497-R, "The R&D Trends of Major Countries in Underwater Surveillance System", Defense Agency for Technology and Quality, 2010
  4. Y.H Ha, "Pseudospectral time-domain modeling for rough surface scattering using a surface flattening transformation", Doctoral dissertation, Seoul National University, 2009.
  5. Xavier Lurton, "An Introduction to Underwater Acoustics Principles and Application", Praxis Publishing Ltd, 2002.
  6. Q. H. Liu, "The pseudospectral time-domain (PSTD) algorithm for acoustic waves in absorptive media", IEEE Trans. Ultrason., Ferroelect., Freq. Contr., vol. 45, pp. 1044-1055, 1998. https://doi.org/10.1109/58.710587
  7. Elston, Gareth R., and Judith M. Bell. "Pseudospectral time-domain modeling of non-Rayleigh reverberation: synthesis and statistical analysis of a sidescan sonar image of sand ripples", IEEE J. Oceanic Eng., vol. 29, pp. 317-329, 2004. https://doi.org/10.1109/JOE.2004.828206
  8. APL, Technical Report APL-UW TR 9407, "APL-UW High-Frequency Ocean Environmental Acoustic Models Handbook", Applied Physics Laboratory, University of Washington, 1994
  9. J.E. Kim, D.S. Han, "Effectiveness Analysis Tool for Underwater Acoustics Detection in Quasi-static Underwater Acoustics Channel based on Underwater Environmental Information DB", Journal of The Institute of Electronics and Information Engineers, vol 52 no.10, pp 148-157, 2015 https://doi.org/10.5573/ieie.2015.52.10.148
  10. R. Demirli, "Model-based estimation of ultrasonic echoes part I: Analysis and algorithms", IEEE Trans. Ultrason. Ferroelectr. Freq. Control, vol. 48, pp. 787-802, 2001. https://doi.org/10.1109/58.920713
  11. J.S. Kim, S.B. Hwang, and C.M. Lee, "A DEMON Processing Robust to Interference of Tonals", The Journal of the Acoustical Society of Korea Vol.31, No.6, pp. 384-390, 2012 https://doi.org/10.7776/ASK.2012.31.6.384
  12. W. A. Struzinski and E. D. Lowe, "The Effect of Improper Normalization on the Performance of an Automated Energy Detector", Journal of Acoustics Society of America, vol. 78, no. 3, pp. 936-941, 1985. https://doi.org/10.1121/1.392925
  13. J.E. Kim, T.B. Shim, "Design of a robust underwater acoustic communication system over multipath fading channels." AIP Publishing, ADVANCES IN OCEAN ACOUSTICS: Proceedings of the 3rd International Conference on Ocean Acoustics (OA2012), Vol. 1495. No. 1, 2012.
  14. Sklar, Bernard. "Digital communications". Vol. 2. NJ: Prentice Hall, 2001.