3.8 Proceedings Paper

Kilometer-range distributed acoustic sensing by time-expanded phase-sensitive time-domain reflectometry

Publisher

IEEE

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Funding

  1. Comunidad de Madrid
  2. FEDER Program [SINFOTON2-CM: P2018/NMT-4326]
  3. Generalitat Valenciana [PROMETEO/2020/029]
  4. Spanish Government [RTI2018-097957-B-C31, RTI2018-097957-B-C32, RTI2018-097957-B-C33]
  5. Universitat Jaume I [UJI-B2019-45]

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By utilizing two electro-optic frequency combs with very different line spacing, we have successfully demonstrated acoustic sensing over a range of 1 km with a resolution of 4 cm, using megahertz detection bandwidth and a sampling rate of 40 Hz.
We demonstrate acoustic sensing over 1 km with 4-cm resolution, using megahertz detection bandwidth and a sampling rate of 40 Hz, by means of two electro-optic frequency combs with very dissimilar line spacing. (c) 2021 The Author(s)

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