Monitoring bands during the Norwegian national day parade – Using fiberoptics
8 days ago
- #Crowd Tracking
- #Urban Monitoring
- #Distributed Acoustic Sensing
- Distributed Acoustic Sensing (DAS) technology was used to measure acoustic activity in Oslo, Norway, during the Norwegian National Day parade in May 2023.
- The study aimed to analyze the 'pulse' of Oslo city center during the parade and compare it with background noise conditions recorded five days before and after the event.
- DAS data successfully detected 87 out of 88 participating bands, analyzing their frequency content, walking speed, and step length.
- High-order harmonics were identified in the frequency response of the bands, aiding in their detection and tracking.
- The technology demonstrated potential for crowd monitoring, complementing other data sources like cameras and cell phone positioning systems.
- Challenges included tracking individual bands within the parade due to similar walking frequencies and unknown fiber coupling conditions.
- Future applications of DAS include urban traffic monitoring, security, and environmental studies, leveraging existing fiber optic infrastructure.