Transportation Systems

Congestion

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Briefs: Electronics & Computers
In the future, the researchers want to derive simple, rule-based insights from their neural model, since the decisions of the neural network can be opaque and difficult to interpret. Simpler, rule-based methods could also be easier to implement and maintain in actual robotic warehouse settings.
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Briefs: Data Acquisition
It is widely believed that Advanced Air Mobility is poised to have a significant societal impact in the coming years to move people and cargo more rapidly and efficiently.
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NASA Spinoff: Aerospace
NASA technology is enabling airline flight managers to improve managing traffic on the ground and scheduling departures.
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Briefs: Transportation
This technology could help control driverless cars and automated warehouses.
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Briefs: Aerospace
Center/TRACON Automation System Software Suite
Air traffic control within the US is getting more complicated as the number of aircraft increases. There is a great need to increase the efficiency of the system so that flight delays are minimized without having to build new airports or runways. At the same time, safety must be maintained so that...
Briefs: Aerospace
Miles-In-Trail with Passback Restrictions for Use in Air Traffic Management
NASA has developed a unique innovation to compute passed back spacing requirements in air traffic management. The air traffic managers of the National Airspace System (NAS) in the United States regularly implement various Traffic Management Initiatives (TMI) to handle...
Briefs: Sensors/Data Acquisition
Convective weather systems, i.e., thunderstorms, are the leading cause of flight delay in U.S. airspace. Airline dispatchers must file their flight plans 1 to 2 hours before takeoff, and are often required to...
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Briefs: Software
Contact Graph Routing
Contact Graph Routing (CGR) is a dynamic routing system that computes routes through a time-varying topology of scheduled communication contacts in a network based on the DTN (Delay-Tolerant Networking) architecture. It is designed to enable dynamic selection of data transmission routes in a space network based on DTN. This...
Briefs: Electronics & Computers
System-Level Integration of Mass Memory
A report discusses integrating multiple memory modules on the high-speed serial interconnect (IEEE 1393) that is used by a spacecraft’s inter-module communications in order to ease data congestion and provide for a scalable, strong, flexible system that can meet new system-level mass memory requirements.
Briefs: Aerospace
Delay Banking for Managing Air Traffic
Delay banking has been invented to enhance air-traffic management in a way that would increase the degree of fairness in assigning arrival, departure, and en-route delays and trajectory deviations to aircraft impacted by congestion in the national airspace system. In delay banking, an aircraft operator...
Briefs: Software
Improving UDP/IP Transmission Without Increasing Congestion
Datagram Retransmission (DGR) is a computer program that, within certain limits, ensures the reception of each datagram transmitted under the User Datagram Protocol/Internet Protocol. [User Datagram Protocol (UDP) is considered unreliable because it does not involve a reliability- ensuring...
Briefs: Electronics & Computers
A scheme for organizing and controlling sensor webs is based on artificial neural networks. [Sensor webs were described in “Sensor Webs” (NPO-20616), NASA Tech Briefs, Vol. 23, No. 10...
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