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Initial Evaluation of Air/Ground Operations with Ground-Based Automated Separation Assurance  (2009)
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NextGen air/ground operations with ground-based automated separation assurance have been initially evaluated with controllers and pilots in the loop at the NASA Ames Research Center. Nominal and off-nominal situations were investigated in a highly automated environment, under 2x and 3x traffic densities. The paper starts with a review of previous simulations on nominal operations, followed by a description of the underlying concept and the roles and responsibilities of controllers, pilots, and automation. The core of this paper discusses a simulation of air/ground operations, in which controllers and pilots were confronted with a challenging situation: Ground-based separation automation was managing the trajectories for all aircraft at 2x and 3x traffic densities without controller involvement. Routine and off-nominal events were carefully scripted that caused short-term conflicts, simulated emergency situations or required trajectory negotiations. It was found that the concept shows great promise to enabling the en route capacity increases targeted for NextGen. The medium-term conflict detection and resolution automation coupled with data link was able to solve over 98% of all conflicts during nominal operations, with a significantly higher success rate at 2x (>99 %) than at 3x. More than 95% of uplinked trajectories were acceptable to the flight crews. While controller workload was low in general and they were able to resolve over 75% of scripted off-nominal short-term conflicts, many issues were identified that need to be further addressed in the area of short-term conflict detection and resolution.
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Air, Assurance, Automated, Based, Ground, Initial Evaluation, Operations, Separation
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Proceedings of the 8th USA/Europe Air Traffic Management Research and Development Seminar, Napa, CA.
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Curator: Phil So
NASA Official: Jessica Nowinski
Last Updated: August 15, 2019