수중 무선인지 네트워크를 위한 수중 음향 장비 주파수 대역 현황 조사

Abstract

요약문 The channel spectrum in underwater acoustic networks is severely limited by the unique characteristics of underwater acoustic communications. In oder to efficiently utilize spectrum while avoiding interference among acoustic systems, the techniques of spectrum aware and dynamic spectrum sharing should be applied to underwater acoustic networks. To this end, underwater cognitive acoustic networks preliminarily know which spectrum is idle temporally and spatially. This paper focuses on the spectral distribution of underwater acoustic equipments developed and implemented in the last few years. Various commercial underwater acoustic equipments are investigated: communication modems, positioning systems. multi beamechosounders, side-scan sonars, and sub-bottom profilers. This study is useful for the ocean engineering community to mange various kinds of acoustic equipments simultaneously.