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Search: (swepub) conttype:(refereed) mspu:(conferencepaper) > (2025)

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1.
  • Nilsson, Henrik, et al. (author)
  • Dronar: Obstacle Echolocation Using Drone Ego-Noise
  • 2025
  • In: Proceedings of 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW). - 9798350374513 ; , s. 184-188
  • Conference paper (peer-reviewed)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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2.
  • Havinger, Carl-Johan, et al. (author)
  • My Digital Mountain - An Autoethnographic Exploration of Off-piste Skiers' Use of Digital Tools
  • 2025
  • In: Proceedings of the Annual Hawaii International Conference on System Sciences (HICSS). - 1530-1605 .- 2572-6862.
  • Conference paper (peer-reviewed)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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