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FT4 Data Analysis Summary (SSI-ARC)Standards for Unmanned Aircraft System (UAS) Detect-and-Avoid (DAA) systems are currently being developed under the auspices of the RTCA Special Committee 228 (SC-228). To support the development of these standards, a series of flight tests has been conducted at NASAs Armstrong Flight Research Center (NASA-AFRC). The fourth in this series of flight test activities (Flight Test 4, or simply FT4) was conducted during the Spring and Summer of 2016. FT4 supported the objectives of numerous organizations working toward UAS DAA Minimum Operational Performance Standards (MOPS) and UAS DAA Radar MOPS. The summary provided herein is limited to the objectives, analysis and conclusions of the NASA Ames Research Center (NASA-ARC) SSI team toward the refinement of UAS DAA MOPS. This document provides a high-level overview of FT4 and the SSI-ARC objectives, a summary of the data analysis methodology and recommendations for UAS DAA MOPS refinements based on the data analysis results. A total of 72 encounters were flown to support SSI-ARC objectives. Test results were generally consistent with acceptable UAS DAA system performance and will be considered in broader SC-228 requirements validation efforts. Observed alert lead times indicated acceptable UAS DAA alerting performance. Effective interoperability between the UAS DAA system and the Traffic Alert and Collision Avoidance System (TCAS) was observed with one notable exception: TCAS Resolutions Advisories (RA) were observed in the absence of any DAA alert on two occasions, indicating the need for alert parameter refinement. Findings further indicated the need for continued work in the areas of DAA Well Clear Recovery logic and alert stability for Mode-C-only intruders. Finally, results demonstrated a high level of compliance with a set of evaluation criteria designed to provide anecdotal evidence of acceptable UAS DAA system performance.
Document ID
20170003855
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Isaacson, Douglas R.
(NASA Ames Research Center Moffett Field, CA United States)
Gong, Chester
(NASA Ames Research Center Moffett Field, CA United States)
Reardon, Scott Edward
(NASA Ames Research Center Moffett Field, CA United States)
Santiago, Confesor
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
April 21, 2017
Publication Date
December 12, 2016
Subject Category
Air Transportation And Safety
Report/Patent Number
ARC-E-DAA-TN37771
Meeting Information
Meeting: RTCA Special Committee (SC-228)
Location: Moffett Field, CA
Country: United States
Start Date: December 15, 2016
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
UAS Test Flight
Java Architecture for Detect and Avoid Extensibility and Modeling (JADEM)
Detect-And-Avoid (DAA)
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