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- Nilsson, Henrik, et al.
(författare)
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Dronar: Obstacle Echolocation Using Drone Ego-Noise
- 2025
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Ingår i: Proceedings of 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW). - 9798350374513 ; , s. 184-188
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Konferensbidrag (refereegranskat)abstract
- A method for obstacle detection using the sound that a drone naturally emits is proposed. The sound emitted from a vehicle, ego-noise, is often considered a complicating factor for mission fulfilment, without purpose. The idea in this paper is to utilise this ego-noise for obstacle detection, being the first to perform practical experiments of this. Adding a few microphones to the vehicle, the ego-noise is utilised as the sound source for echolocation. The method consists of auto-correlating the received signals to estimate echo delays, using the known array geometry and signal propagation speed to relate delays to distances, and then beamforming to position targets. A proof-of-concept has been constructed, and promising results are presented for experiments in a controlled environment.
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- Havinger, Carl-Johan, et al.
(författare)
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My Digital Mountain - An Autoethnographic Exploration of Off-piste Skiers' Use of Digital Tools
- 2025
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Ingår i: Proceedings of the Annual Hawaii International Conference on System Sciences (HICSS). - 1530-1605 .- 2572-6862.
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Konferensbidrag (refereegranskat)abstract
- This paper explores the sociocultural dynamics of off-piste skiers' engagement with digital tools for information-seeking, sharing, and risk management. The study uses autoethnographic narratives and qualitative interview data to understand the digital interactions of off-piste skiers and their influence on decision-making and safety. The findings underscore the extensive use of digital tools, particularly FATMAP, to provide real-time information crucial for navigating the unpredictable terrain and enhancing decision-making processes. This research underscores the significant role of digital representation of the mountain in shaping off-piste skiing practices, cultivating community, and, ultimately, experiences. The findings provide unique insights that help us understand digital tools’ informational use in extreme environments, specifically in the context of off-piste skiing.
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