Publication result detail

Acoustic signal response in solid structures measured by distributed acoustic sensing

DEJDAR, P.; MOKRÝ, O.; HORVÁTH, T.; SCHIMMEL, J.; MÜNSTER, P.

Original Title

Acoustic signal response in solid structures measured by distributed acoustic sensing

English Title

Acoustic signal response in solid structures measured by distributed acoustic sensing

Type

Paper in proceedings (conference paper)

Original Abstract

This paper investigates the propagation of acoustic waves in solid media using a distributed acoustic sensing (DAS) system. An optical fiber is embedded in a plastic cable raceway, which is subjected to sound stimuli generated by a loudspeaker and mechanical impulses. The DAS system is configured to sample the backscattered signal with a spatial resolution of 1 meter along the fiber. By triggering the acoustic excitation at various positions relative to the fiber, the resulting DAS traces are analyzed to evaluate the temporal and spatial response of the system. The measurements reveal that the DAS response is close to being uniform along the sensing fiber. While local effects cannot be excluded, the results suggest that sound propagation through the solid structure does not introduce a dominant distortion or delay of the signal in the investigated configuration. Consequently, for the purposes of localization and event detection in such setups, the influence of acoustic wave propagation within the supporting medium appears to be limited.

English abstract

This paper investigates the propagation of acoustic waves in solid media using a distributed acoustic sensing (DAS) system. An optical fiber is embedded in a plastic cable raceway, which is subjected to sound stimuli generated by a loudspeaker and mechanical impulses. The DAS system is configured to sample the backscattered signal with a spatial resolution of 1 meter along the fiber. By triggering the acoustic excitation at various positions relative to the fiber, the resulting DAS traces are analyzed to evaluate the temporal and spatial response of the system. The measurements reveal that the DAS response is close to being uniform along the sensing fiber. While local effects cannot be excluded, the results suggest that sound propagation through the solid structure does not introduce a dominant distortion or delay of the signal in the investigated configuration. Consequently, for the purposes of localization and event detection in such setups, the influence of acoustic wave propagation within the supporting medium appears to be limited.

Keywords

Distributed acoustic sensing; Fiber installations; Sound; Vibration sensing

Key words in English

Distributed acoustic sensing; Fiber installations; Sound; Vibration sensing

Authors

DEJDAR, P.; MOKRÝ, O.; HORVÁTH, T.; SCHIMMEL, J.; MÜNSTER, P.

Released

05.03.2026

Publisher

SPIE

Book

Optical Sensing and Precision Metrology II

Periodical

Proceedings of SPIE

Volume

2026

Number

13914

State

United States of America

Pages count

6

URL

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13914/1391408/Acoustic-signal-response-in-solid-structures-measured-by-distributed-acoustic/10.1117/12.3080923.full

BibTex

@inproceedings{BUT201796,
  author="Petr {Dejdar} and Ondřej {Mokrý} and Tomáš {Horváth} and Jiří {Schimmel} and Petr {Münster}",
  title="Acoustic signal response in solid structures measured by distributed acoustic sensing",
  booktitle="Optical Sensing and Precision Metrology II",
  year="2026",
  journal="Proceedings of SPIE",
  volume="2026",
  number="13914",
  pages="6",
  publisher="SPIE",
  doi="10.1117/12.3080923",
  issn="1996-756X",
  url="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13914/1391408/Acoustic-signal-response-in-solid-structures-measured-by-distributed-acoustic/10.1117/12.3080923.full"
}