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A Study on the Underwater Target Detection Using the Waveform Inversion Technique

파형역산 기법을 이용한 수중표적 탐지 연구

Bae, Ho Seuk;Kim, Won-Ki;Kim, Woo Shik;Choi, Sang Moon
배호석;김원기;김우식;최상문

  • Received : 2015.09.23
  • Accepted : 2015.10.01
  • Published : 2015.11.30

Abstract

A short-range underwater target detection and identification techniques using mid- and high-frequency bands have been highly developed. However, nowadays the long-range detection using the low-frequency band is requested and one of the most challengeable issues. The waveform inversion technique is widely used and the hottest technology in both academia and industry of the seismic exploration. It is based on the numerical analysis tool, and could construct more than a few kilometers of the subsurface structures and model-parameters such as P-wave velocity using a low-frequency band. By applying this technique to the underwater acoustic circumstance, firstly application of underwater target detection is verified. Furthermore, subsurface structures and it's parameters of the war-field are well reconstructed. We can confirm that this technique greatly reduces the false-alarm rate for the underwater targets because it could accurately reproduce both the shape and the model-parameters at the same time.

Keywords

Waveform inversion;Target detection;Low-frequency detection;Model-parameter estimation

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