STUDY OF THE INTERACTION AND EFFICIENCY OF FIBER-OPTICAL MODAL STRUCTURES AND SPECTRAL-CORRELATION RADIO DIRECTION FINDING METHOD IN VIBROACOUSTIC MONITORING SYSTEMS
Abstract. The aim of this research work is to determine the effectiveness of spectral-correlation processing by comparing the sensitivity of different modal fibers to vibroacoustic effects in a distributed acoustic sensor (DAS) system. Single-mode (SMF, ITU-T G.652) and specially doped low-mode (FMF 21/125, 5-LP-modal, GeO₂-based) optical fibers were taken as the object of research. In […]