A SMART NAS Toolkit for Optimality Metrics Overlay, Phase I

Metadata Updated: February 28, 2019

The innovation proposed is a plug-and-play module for NASA's proposed SMART NAS (Shadow Mode Assessment using Realistic Technologies for the NAS) system that computes and displays metrics related to how close to optimal a simulated scenario is performing under various system objectives in a multi-objective setting. The module, called TOMO (Toolkit for Optimization Metrics Overlay) is a large-scale optimization model that computes trajectories of aircraft under Trajectory Based Operations (TBO) that optimize system performance under various objectives such as delays, fuel burn, and environmental impacts. The toolkit is designed to be used either in shadow mode or in post-operations analysis. This capability within SMART NAS would allow a scenario's performance to be normalized against an achievable best case and will facilitate a meaningful comparison of the performance of scenarios with different types of demand, weather, and operating constraints. TOMO will also feature a "simultaneous playback" mode, in which a user can simultaneously compare the simulated scenario with an optimized version for each potential objective.

TOMO is based on a new class of algorithms for solving large-scale TFM problems by separating TFM optimization into two problems---a master problem that checks for capacity violations and allocates resources to competing aircraft, and a sub-problem solved by each individual aircraft that generates 4-d trajectories for each flight. The master problem exchanges dual prices that signal congestion across ATC resources to guide the sub-problems to an optimal solution. This "agent-based" optimization approach is well-suited to be used within a large-scale agent-based simulation framework.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019

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Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_33441
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
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Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2015-12-01
Homepage URL https://techport.nasa.gov/view/33441
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 787990e1b5e0f003fa8677457b75d4537ca12a91
Source Schema Version 1.1

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