Publication type: Conference paper
Type of review: Peer review (publication)
Title: Impact of GNSS outage on mid-air collision
Authors: Figuet, Benoit
Waltert, Manuel
Monstein, Raphael
Felux, Michael
et. al: No
Proceedings: Proceedings of the IWAC2022
Page(s): 41
Pages to: 48
Conference details: 7th International Workshop on ATM/CNS (IWAC), Tokyo, Japan (online), 25-27 October 2022
Issue Date: 25-Oct-2022
Publisher / Ed. Institution: Electronic Navigation Research Institute
Publisher / Ed. Institution: Tokyo
Language: English
Subjects: Collision risk model; GNSS jamming; Airspace safety
Subject (DDC): 629: Aeronautical, automotive engineering
Abstract: Automatic dependent surveillance broadcast technology is transforming aviation by providing air traffic controllers with fast and accurate surveillance capabilities which rely on aircraft broadcasting their position obtained typically through the global navigation satellite system. While satellite navigation enables accurate positioning, it remains vulnerable to external disturbances, which can be triggered by multiple causes, such as intentional jamming or ionospheric events. In such cases, navigation systems revert to less accurate navigation techniques, such as inertial sensors or ground-based radio navigation aids. This study comes with two main objectives: (i) to study the impact of an outage of satellite navigation systems on mid-air collision risk due to navigation performance degradation, and (ii) to translate collision probabilities due to navigation error into minimum spacing requirements. In this context, this study simulates navigation errors of real world trajectories by using a probabilistic radio navigation error model. Results show that the risk of mid-air collisions is increased in case of a degradation of the navigation performance. However, it stays well below the target level of safety when ground-based navigation aids are used instead of satellite navigation.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Centre for Aviation (ZAV)
Appears in collections:Publikationen School of Engineering

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Figuet, B., Waltert, M., Monstein, R., & Felux, M. (2022). Impact of GNSS outage on mid-air collision [Conference paper]. Proceedings of the IWAC2022, 41–48.
Figuet, B. et al. (2022) ‘Impact of GNSS outage on mid-air collision’, in Proceedings of the IWAC2022. Tokyo: Electronic Navigation Research Institute, pp. 41–48.
B. Figuet, M. Waltert, R. Monstein, and M. Felux, “Impact of GNSS outage on mid-air collision,” in Proceedings of the IWAC2022, Oct. 2022, pp. 41–48.
FIGUET, Benoit, Manuel WALTERT, Raphael MONSTEIN und Michael FELUX, 2022. Impact of GNSS outage on mid-air collision. In: Proceedings of the IWAC2022. Conference paper. Tokyo: Electronic Navigation Research Institute. 25 Oktober 2022. S. 41–48
Figuet, Benoit, Manuel Waltert, Raphael Monstein, and Michael Felux. 2022. “Impact of GNSS Outage on Mid-Air Collision.” Conference paper. In Proceedings of the IWAC2022, 41–48. Tokyo: Electronic Navigation Research Institute.
Figuet, Benoit, et al. “Impact of GNSS Outage on Mid-Air Collision.” Proceedings of the IWAC2022, Electronic Navigation Research Institute, 2022, pp. 41–48.

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