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Which minimum Video Frame Rate is needed in a Remote Tower Optical System

Jakobi, Jörn and Hagl, Maria (2022) Which minimum Video Frame Rate is needed in a Remote Tower Optical System. In: Virtual and Remote Tower (2nd edition) - Research, Design, Development, Validation and Implementation Research Topics in Aerospace. Springer Publishers. pp. 405-426. doi: 10.1007/978-3-030-93650-1_17. ISBN 978-3-030-93649-5. ISSN 2194-8240.

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Official URL: https://link.springer.com/book/10.1007/978-3-030-93650-1


Bandwidth, often limited and costly, plays a crucial role in cost-efficient Remote Tower system. Reducing the Video Frame Rate (in the following referred to Frame Rate (FR), expressed in fps, also referred to video update rate (European Organisation for Civil Aviation Equipment. EUROCAE: Minimum aviation system performance specification for remote tower optical systems, ED-240A change 1, EUROCAE, Saint-Denis: 2021)) of the relayed video stream is one parameter to save bandwidth, but at the cost of video quality. Therefore, the present article evaluates how much FR can be reduced without compromising operational performance and human factor issues. In our study, seven Air Traffic Control Officers (ATCOs) watched real air traffic videos, recorded by the Remote Tower field test platform at the German Aerospace Center (DLR e.V.) at Braunschweig-Wolfsburg Airport (BWE). In a passive shadow mode, they executed ATS relevant tasks in four different FR conditions (2, 5, 10 and 15 fps) to objectively measure their visual detection performance and subjectively assess their current physiological state and their perceived video quality and system operability. Study results have shown that by reducing the FR, neither the visual detection performance nor physiological state is impaired. Only the perceived video quality and the perceived system operability dropped by reducing FR down to 2 fps. The findings of the study presented in this chapter will help to better adjust video parameters in bandwidth limited applications in general, and in particular to alleviate large scale deployment of Remote Towers in a safe and cost-efficient way.

Item URL in elib:https://elib.dlr.de/187439/
Document Type:Book Section
Title:Which minimum Video Frame Rate is needed in a Remote Tower Optical System
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Jakobi, JörnUNSPECIFIEDhttps://orcid.org/0000-0003-2352-2971UNSPECIFIED
Date:July 2022
Journal or Publication Title:Virtual and Remote Tower (2nd edition) - Research, Design, Development, Validation and Implementation
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 405-426
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:Springer Publishers
Series Name:Research Topics in Aerospace
Keywords:Video update rate Frame rate Frames per second Detection perfomance Physiological stress
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Human Factors
Location: Braunschweig
Institutes and Institutions:Institute of Flight Guidance > Systemergonomy
Deposited By: Höver, Julia
Deposited On:16 Aug 2022 10:03
Last Modified:29 Mar 2023 00:02

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