Ultra-low sampling resolution technique for heterodyne phase-OTDR based distributed acoustic sensing.
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DOI: 10.1364/ol.456925
Abstract: Phase-sensitive optical time-domain reflectometry (Φ-OTDR) based on heterodyne detection is widely used for its simple structure and high signal-to-noise ratio (SNR). However, the large amount of raw data of Φ-OTDR places a heavy burden on… read more here.
Keywords: heterodyne; sampling resolution; phase; low sampling ... See more keywords