A deep insight into avalanche transceivers for optimizing rescue

Ayuso, Natalia; Cuchí, José Antonio; Lera, F.; Villarroel, José Luis

doi:10.1016/j.coldregions.2014.12.005

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…4,17,18 Rescue algorithms for avalanche accidents should consider the potential of prolonged search and rescue missions from EMI caused by electric devices. 5,19 Furthermore, EMI caused by HE was more pronounced in rescuer ATs. Interference by on-state HEs was most frequently observed during the initial signal detection and coarse search but not during fine search.…”

Section: Discussionmentioning

confidence: 97%

“…4,17,18 Rescue algorithms for avalanche accidents should consider the potential of prolonged search and rescue missions from EMI caused by electric devices. 5,19…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3] During signal search with the rescuer AT (receiving AT), multiple-antenna digital beacons can transmit and detect electromagnetic waves and display the estimated distance from the source. 4,5 Once a signal is received, the AT displays an arrow to guide the rescuer to the target AT (transmitting AT). Coarse search is performed to rapidly detect signals from buried victims, whereas fine search specifies the accurate location.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Interference from Heated Gloves May Compromise Avalanche Transceiver Function

Troeger

Isser²,

Lengerer³

et al. 2022

Wilderness & Environmental Medicine

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Introduction-Rapid location of avalanche victims by companions using avalanche transceivers is of utmost importance to prevent asphyxiation. The objective was to determine whether electromagnetic interference from heating elements in gloves worn by rescuers or victims can impair the receiving or transmitting function of avalanche beacons.Methods-Commercially available heated gloves from 3 different manufacturers were examined during a simulated search with 3 common brands of avalanche transceivers. Distance to target beacon at first signal detection and accuracy of direction to target, as indicated by the arrow from the direction indicator, were evaluated.Results-Preliminary tests showed that transmitting and receiving signals are degraded by electromagnetic interference caused by rectangular pulses emitted by activated heating elements. Field tests revealed significantly reduced distances of first signal detection when heated gloves were turned on near receiving avalanche transceivers (P<0.001; Wilcoxon signed-rank test). Decreased distance to target beacon ranged between 1.9 m (5%) and 41.5 m (94%) at first detection, depending on the avalanche transceiver used.Conclusions-Avalanche transceivers are susceptible to electromagnetic interference from gloves with electric heating elements. We do not recommend using heated gloves when performing a transceiver search for avalanche victims because it can lead to a delay in rescue.

show abstract

Section: Discussionmentioning

confidence: 97%

“…4,17,18 Rescue algorithms for avalanche accidents should consider the potential of prolonged search and rescue missions from EMI caused by electric devices. 5,19…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electromagnetic Interference from Heated Gloves May Compromise Avalanche Transceiver Function

Troeger

Isser²,

Lengerer³

et al. 2022

Wilderness & Environmental Medicine

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A penalized batch-Bayesian approach to informative path planning for decentralized swarm robotic search

2022

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Quantum limits of position and polarizability estimation in the optical near field

Kienesberger,

Juffmann,

Nimmrichter

2024

Phys. Rev. Research

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Optical near fields are at the heart of various applications in sensing and imaging. We investigate dipole scattering as a parameter estimation problem and show that optical near fields carry more information about the location and the polarizability of the scatterer than the respective far fields. This increase in information originates from, and occurs simultaneously with, the scattering process itself. Our calculations also yield the far-field localization limit for dipoles in free space. Published by the American Physical Society 2024

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A deep insight into avalanche transceivers for optimizing rescue

Cited by 4 publications

References 24 publications

Electromagnetic Interference from Heated Gloves May Compromise Avalanche Transceiver Function

Electromagnetic Interference from Heated Gloves May Compromise Avalanche Transceiver Function

A penalized batch-Bayesian approach to informative path planning for decentralized swarm robotic search

Quantum limits of position and polarizability estimation in the optical near field

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