Abstract: Utilizing periodic phase modulation (PPM) can shift the echo spectrum, affecting matched filtering (MF) processing, leading to time delay shift or amplitude attenuation. The prior works on ...

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The old Juan F. Luis Hospital on St. Croix, slated for demolition, will be replaced by a new facility planned under the territory’s hospital redevelopment program. Photo Credit: ERNICE GILBERT, V.I.

Abstract: Distributed acoustic sensing systems based on phase-sensitive optical time-domain reflectometry have been used in several applications, especially in oil and gas fields and seismic ...