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The Generic Resolution Advisor and Conflict Evaluator (GRACE) for Unmanned Aircraft Detect-And-Avoid SystemsThe paper describes the Generic Resolution Advisor and Conflict Evaluator (GRACE), a novel alerting and guidance algorithm that combines flexibility, robustness, and computational efficiency. GRACE is generic since it was designed without any assumptions regarding temporal or spatial scales, aircraft performance, or its sensor and communication systems. Therefore, GRACE was adopted as a core component of the Java Architecture for Detect-And-Avoid (DAA) Extensibility and Modeling, developed by NASA as a research and modeling tool for Unmanned Aerial Systems Integration in the National Airspace System (NAS). GRACE has been used in a number of real-time and fast-time experiments supporting evolving requirements of DAA research, including parametric studies, NAS-wide simulations, human-in-the-loop experiments, and live flight tests.
Document ID
20170011450
Acquisition Source
Ames Research Center
Document Type
Technical Memorandum (TM)
Authors
Abramson, Michael (Universities Space Research Association Moffett Field, CA, United States)
Refai, Mohamad (Universities Space Research Association Moffett Field, CA, United States)
Santiago, Confesor (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
December 1, 2017
Publication Date
May 1, 2017
Subject Category
Air Transportation And Safety
Report/Patent Number
ARC-E-DAA-TN42014
NASA/TM-2017-219507
Report Number: ARC-E-DAA-TN42014
Report Number: NASA/TM-2017-219507
Funding Number(s)
CONTRACT_GRANT: NNA16BD14C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Unmanned Aircraft
simulation
detect and avoid

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