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ADS-B Mixed sUAS and NAS System Capacity Analysis and DAA PerformanceAutomatic Dependent Surveillance-Broadcast (ADS-B) technology was introduced more than twenty years ago to improve surveillance within the US National Airspace Space (NAS) as well as in many other countries. Via the NextGen initiative, implementation of ADS-B technology across the US is planned in stages between 2012 and 2025. ADS-B's automatic one second epoch packet transmission exploits on-board GPS-derived navigational information to provide position information, as well as other information including vehicle identification, ground speed, vertical rate and track angle. The purpose of this technology is to improve surveillance data accuracy and provide access to better situational awareness to enable operational benefits such as shorter routes, reduced flight time and fuel burn, and reduced traffic delays, and to allow air traffic controllers to manage aircraft with greater safety margins. Other than the limited amount of information bits per packet that can be sent, ADS-B's other hard-limit limitation is capacity. Small unmanned aircraft systems (sUAS) can utilize limited ADS-B transmission power, in general, thus allowing this technology to be considered for use within a combined NAS and sUAS environment, but the potential number and density of sUAS predicted for future deployment calls into question the ability of ADS-B systems to meet the resulting capacity requirement. Hence, studies to understand potential limitations of ADS-B to fulfill capacity requirements in various sUAS scenarios are of great interest. In this paper we, validate/improve on, previous work performed by the MITRE Corporation concerning sUAS power and capacity in a sUAS and General Aviation (GA) mixed environment. In addition, we implement its inherent media access control layer capacity limitations which was not shown in the MITRE paper. Finally, a simple detect and avoid (DAA) algorithm is implemented to display that ADS-B technology is a viable technology for a mixed NAS/sUAS environment even in proposed larger mixed density environments.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Matheou, Konstantin J.
(ZIN Technologies, Inc. Brook Park, OH, United States)
Apaza, Rafael D.
(NASA Glenn Research Center Cleveland, OH, United States)
Downey, Alan N.
(NASA Glenn Research Center Cleveland, OH, United States)
Kerczewski, Robert J.
(NASA Glenn Research Center Cleveland, OH, United States)
Wang, John
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 20, 2018
Publication Date
April 10, 2018
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
Meeting Information
Meeting: 18th Integrated Communications, Navigation and Surveillance Systems (ICNS) Conference
Location: Herndon, VA
Country: United States
Start Date: April 10, 2018
End Date: April 12, 2018
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 334005.
Distribution Limits
Public Use Permitted.
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