An Analysis of Pulse Length Effect on Underwater Simulated Target Strength Estimated Model

수중 모의표적 강도예측 모델의 펄스길이 효과 고찰

  • Published : 2001.02.01

Abstract

This Paper the practical echo signal synthesis model to predict the target strength and signal shape of a submarine for a valuable tool to active sonar engineer. It is based on UTAHID (Underwater TArget by Highlight Distribution) model which is relocated highlight points along to external hull for aspect angle, and synthesized echo signal by modified grouping highlights to internal scatter cloud. Proposed model is analyzed target strength characteristics on various incident pulse length, and synthesis signal signature, target time spreading loss, echo elongation effect and so on. Thus it can be efficiently used in various real systems related to underwater target echo signal synthesis, that is, active sonar, acoustic countermeasure and surveillance system.

본 연구에서는 능동소나와 관련된 시스템에 적용가능한 잠수함 수중표적의 표적강도 및 신호형태를 예측하는 반사신호 합성모델을 제안한다. 이는 입사각에 따라 외부헐로 하이라이트의 위치가 변하는 UTAHID (Underwater TArget by Highlight Distribution) 모델을 기초로 하여 잠수함 내부의 복잡한 형상에 의한 반사점들을 산란자운에 의한 구룹화된 하이라이트군으로 변형을 가하여 반사신호를 합성한다. 제안된 모델은 입사신호의 펄스길이 변화에 따른 표적강도 변화특성 및 합성신호 파형, 시간분산손실, 신장효과 등에 대해 분석하였으며, 이는 능동소나, 음향대항, 감시 시스템과 같이 반사신호 합성에 관련된 여러가지 실시스템에 적용이 가능하다.

Keywords

References

  1. A Guided Tour Inside a Niclear Warship T. Clancy, Submarine
  2. JASA v.105 no.6 Detection of Phase or Frequency Modulated Signals in Reverberation Noise V. Carmillet;P.O. Amblard;G. Jourdain
  3. JASA v.92 no.2 Evaluation of the interference Effect in the Energy Investigation of Echoes Scattered by the Uncorrelated Planar Distribution of Spherical Targets Z. Sun;G. Gimenez
  4. Applied Acoustics v.53 no.1 The Scattering of an Acoustic Wave Incident on the Rigid Floating Body C.N. Wang;C.C. Tse
  5. ACTA ACUSTICA v.22 A Study on 2-Dimensional Highlight Distribution of Underwater Target J. Yongmin;F. Haihong;H. Xinya;H. Junying
  6. Proc. UDT Conf. Highlights Model for Submarines A. Rondini;E. Ruchaud
  7. Electronic Progress v.24 Coherent Target and Environmental Modeling for Torpedo Terminal Homing Simulations S.G. Chamberiain;A.M. Berlinsky
  8. 한국음향학회지 v.19 no.7 하이라이트 분포 모델에 의한 수중 표적 에코신호 합성 김부일;박명호;권우현
  9. CSAS-80 Omni Sonar Product Description
  10. Physics of Sound in the Sea, Part Ⅲ Reflection of Sound from Submarines and Surface Vessels J. K. Maior
  11. SeaBat 8112 Diver Detection Sonar Reson Inc.