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Map-based Height Above Ground Estimation for Safe Operation Monitoring of Unmanned Aircraft in Very Low Level Airspaces

Schopferer, Simon and Schirmer, Sebastian and Jünger, Franz and Loheide, Hannes (2023) Map-based Height Above Ground Estimation for Safe Operation Monitoring of Unmanned Aircraft in Very Low Level Airspaces. In: Deutscher Luft- und Raumfahrtkongress 2023. Deutscher Luft- und Raumfahrtkongress (DLRK) 2023, 2023-09-19 - 2023-09-21, Stuttgart. doi: 10.25967/610406.

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Official URL: https://publikationen.dglr.de/?tx_dglrpublications_pi1%5bdocument_id%5d=610406


According to current European regulations, most common drone operations are limited to a maximum altitude of 120m above ground. However, a direct measurement of the height above ground is usually not available for small drones. Consequently, ensuring compliance to height above ground constraints may prove to be difficult for many scenarios, especially when flying over complex terrain or beyond the visual line-of-sight of a remote pilot. In this work, we investigate the use of a satellite-based navigation and digital terrain maps to estimate the height above ground. We propose to integrate this estimation into a runtime assurance architecture with a safe operation monitor ensuring compliance to the maximum height above ground imposed by regulatory or operational constraints. We assess the feasibility and limitations of the approach, by analyzing sources of errors including navigation uncertainty and elevation data accuracy. We present the design and implementation details of a height above ground estimation and monitoring system and show results from flight tests with a multicopter drone. The presented results indicate the practicability and current limitations of a map-based height above ground estimation for drones operated in very low level airspaces.

Item URL in elib:https://elib.dlr.de/201009/
Document Type:Conference or Workshop Item (Speech)
Title:Map-based Height Above Ground Estimation for Safe Operation Monitoring of Unmanned Aircraft in Very Low Level Airspaces
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schopferer, SimonUNSPECIFIEDhttps://orcid.org/0000-0001-5254-3961UNSPECIFIED
Schirmer, SebastianUNSPECIFIEDhttps://orcid.org/0000-0002-4596-2479UNSPECIFIED
Date:10 November 2023
Journal or Publication Title:Deutscher Luft- und Raumfahrtkongress 2023
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:UAS, very low level operations, height above ground estimation, digital elevation model, safe operation monitoring
Event Title:Deutscher Luft- und Raumfahrtkongress (DLRK) 2023
Event Location:Stuttgart
Event Type:national Conference
Event Start Date:19 September 2023
Event End Date:21 September 2023
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Unmanned Aerial Systems
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems
Institute of Flight Systems > Unmanned Aircraft
Deposited By: Schopferer, Simon
Deposited On:25 Jan 2024 13:00
Last Modified:24 Apr 2024 21:01

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