무향수조 내에서 MUSIC 알고리듬을 이용한 음원의 위치 추적

Abstract

Localization with array sensors has been applied for not only military but also non-military purposes. The identification of submarines and fish finding are those examples. Nowadays the demand for noise identification is increasing to characterize noise sources and improve acoustic performance of underwater acoustic equipment. For that reason KRISO/KORDI recently constructed an anechoic basin which has reflection only at the free surface. This paper suggests a noise identification methods using MUSIC algorithms in such an acoustic field. For comparison phase delay sum and minimum variance methods are also described. At first basic principles are described. A several numerical simulations are also performed. The results say that reflection effect may cause a new non-real source although good estimation is obtained under no reflection conditions.