항적의 미세 기포에 의해 산란된 신호의 모의와 실험적 연구

Abstract

Microbubbles are created in copious quantities in the wakes of ocean vessels and, because of their large acoustical cross sections, are responsible for the scattering acoustical signature of the wake.

The acoustic characteristics of the suspended microbubbles can be used to detect and track the ship wake.

In this thesis, a reverberation model simulating the signal scattered by microbubbles within the ship wake is developed and compared with the experimental data. In order to calculate the scattering strength, the bubble radius and corresponding bubble population are considered.

We show that the experimental results can be simulated with the developed model using a set of acoustic parameters. Finally, the discussions and future research directions are given.