Bridge vibration measurements from very high-resolution spaceborne SAR

Aleksanteri Vattulainen*, Finlay Rollo, Alessandro Lotti, Daniel Tonelli, Sebastian Diaz Riofrio, Enrico Tubaldi, Daniele Zonta, Christos Ilioudis, Pietro Milillo, Carmine Clemente

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

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Abstract

Structural health monitoring (SHM) using vibrometry is a key technique for the maintenance of bridges and other infrastructure. Conventional methods require in-situ placement of sensors which can be costly and inconvenient. This paper presents a remote monitoring method for extracting vibrational information from very high-resolution SAR data. This was achieved using a combination of a modified back-projection algorithm, spectrogram, and cadence-frequency analysis, which was applied to SAR data of a bridge. The extracted vibrations were validated against synchronous in-situ ground truth measurements.
Original languageEnglish
DOIs
Publication statusPublished - 17 Dec 2024
EventIEEE Sensors 2024 - Kobe, Japan
Duration: 20 Oct 202423 Oct 2024

Conference

ConferenceIEEE Sensors 2024
Country/TerritoryJapan
CityKobe
Period20/10/2423/10/24

Funding

This research is funded by the European Space Agency under the projects Bridge Monitoring Based on Single Pass SAR Images, EO4Security - Innovative SAR Processing Methodologies For Security Applications - Topic B2: Micro-Doppler Processing, Fondazione CARITRO (grant number 2021.0224) and the Agreement DPC/ReLUIS 2024-2026 (WP6). This work was in part performed at the University of Houston under a contract with the NASA Commercial Smallsat Data Acquisition Program (QKWEF8XLMTT3).

Keywords

  • SAR
  • micro-Doppler
  • structural health monitoring

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