Interference Pattern Analysis of the Radiated Noise in Submarine Passive Sonar

Kim, ByoungUk; An, SangKyum; Lee, Kuenhwa; Seong, WooJae; Hahn, JooYoung

doi:2013.16.4.456

J. KIMS Technol > Volume 16(4); 2013 > Article

Journal of the Korea Institute of Military Science and Technology 2013;16(4):456-464.
DOI: https://doi.org/10.9766/KIMST.2013.16.4.456

Interference Pattern Analysis of the Radiated Noise in Submarine Passive Sonar

ByoungUk Kim, SangKyum An, Kuenhwa Lee, WooJae Seong, JooYoung Hahn

¹
²

잠수함 수동소나에서 방사소음의 간섭패턴 분석

김병욱, 안상겸, 이근화, 성우제, 한주영

¹서울대학교 수중음향연구실
²국방과학연구소

Abstract

Passive sonar in submarine can detect the target in long range and can attack using it. There are many noises which can be received at passive sonar of submarine. When noise received in the sonar it make diverse interference pattern depend on the ocean ambient and movement scenario. Interference pattern can be explained by theory of waveguide invariant. In this paper, analyze the interference pattern according to the relative motions of surface ship and submarine. And analyze the occurrence reason of 2 kinds of interference patterns those are usually display on the submarine console. The results show that if relative speed of submarine and target increase then gradient of interference pattern will increase. And closest point approach of submarine and target decrease then gradient of interference pattern will increase. Bathtube pattern usually appear when target pass though close to submarine and Pinetree pattern appear target pass though above of submarine.

Key Words: Submarine, Passive Sonar, Target Noise, Interference Pattern