| Téléchargement | - Voir la version finale : Satellite synthetic aperture radar, multispectral, and infrared imagery for assessing bridge deformation and structural health—a case study at the Samuel de Champlain bridge (PDF, 15.9 Mio)
|
|---|
| DOI | Trouver le DOI : https://doi.org/10.3390/rs16040614 |
|---|
| Auteur | Rechercher : Cusson, Daniel1Identifiant ORCID : https://orcid.org/0000-0002-2961-6912; Rechercher : Stewart, Helen |
|---|
| Affiliation | - Conseil national de recherches du Canada. Construction
|
|---|
| Bailleur de fonds | Rechercher : Transport Canada; Rechercher : Infrastructure Canada; Rechercher : National Research Council Canada |
|---|
| Format | Texte, Article |
|---|
| Sujet | remote sensing; satellite imagery; bridge deformation; environmental data |
|---|
| Résumé | A space-borne remote sensing method was applied, validated, and demonstrated in a case study on the Samuel de Champlain Bridge in Montreal, Canada. High-resolution C-band radar satellite imagery was analyzed using the Persistent Scatterer Interferometric Synthetic Aperture Radar technique to derive bridge displacements and compare them against theoretical estimates. Multispectral and long-wave thermal infrared satellite imagery acquired during the InSAR observation period and historical environmental data were analyzed to provide context for the interpretation and understanding of InSAR results. Thermal deformation measurements compared well with their theoretical estimates based on known bridge geometry and ambient temperature data. Non-thermal deformation measurements gave no evidence of settlement during the 2-year monitoring period, as would normally be expected for a newly constructed bridge with its foundation on bedrock. The availability of environmental data obtained from multispectral and thermal infrared satellite imagery was found to be useful in providing context for the bridge stability assessment. Ambient temperature measurements from thermal infrared satellite imagery were found to be a suitable alternative in cases where data from in situ temperature sensors or nearby weather stations are not available or not fit for purpose. No strong correlation was found between the river conditions and bridge deformation results from the InSAR analysis; this is partly due to the fact that most of these effects act along the river flow in the north–south direction, to which the satellite sensor is not sensitive. |
|---|
| Date de publication | 2024-02-07 |
|---|
| Maison d’édition | MDPI |
|---|
| Licence | |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Identificateur | rs16040614 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 4361368e-b587-48b5-bef5-fe6bc39d1b8f |
|---|
| Enregistrement créé | 2024-07-24 |
|---|
| Enregistrement modifié | 2025-11-03 |
|---|
