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SAFEGUARD: An Assured Safety Net Technology for UASAs demands increase to use unmanned aircraft systems (UAS) for a broad spectrum of commercial applications, regulatory authorities are examining how to safely integrate them without loss of safety or major disruption to existing airspace operations. This work addresses the development of the Safeguard system as an assured safety net technology for UAS. The Safeguard system monitors and enforces conformance to a set of rules defined prior to flight (e.g., geospatial stay-out or stay-in regions, speed limits, altitude limits). Safeguard operates independently of the UAS autopilot and is strategically designed in a way that can be realized by a small set of verifiable functions to simplify compliance with regulatory standards for commercial aircraft. A framework is described that decouples the system from any other devices on the UAS as well as introduces complementary positioning source(s) for applications that require integrity and availability beyond what the Global Positioning System (GPS) can provide. Additionally, the high level logic embedded within the software is presented, as well as the steps being taken toward verification and validation (V&V) of proper functionality. Next, an initial prototype implementation of the described system is disclosed. Lastly, future work including development, testing, and system V&V is summarized.
Document ID
20160012239
Document Type
Conference Paper
Authors
Dill, Evan T. (NASA Langley Research Center Hampton, VA, United States)
Young, Steven D. (NASA Langley Research Center Hampton, VA, United States)
Hayhurst, Kelly J. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
October 11, 2016
Publication Date
September 25, 2016
Subject Category
Air Transportation and Safety
Report/Patent Number
NF1676L-25048
Meeting Information
Digital Avionics Systems Conference (DASC) 2016(Sacramento, CA)
Funding Number(s)
WBS: WBS 154692.02.10.07.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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