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Algorithms for Control of Arrival and Departure Traffic in Terminal Airspace.

Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering·2020
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Trajectory Specification for Terminal Air Traffic Control: Conflict Detection and Resolution.

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Trajectory Specification Language for Air Traffic Control.

Russell A Paielli1

  • 1NASA Ames Research Center, Moffett Field, California, 94035.

Journal of Advanced Transportation
|September 10, 2020
PubMed
Summary

This study introduces a standard Trajectory Specification Language (TSL) using XML for dynamic aircraft trajectory definition with tolerances. TSL enables efficient air-to-ground and ground-to-air communication of flight path data.

Area of Science:

  • Aerospace Engineering
  • Computer Science
  • Aviation Systems

Background:

  • Aircraft trajectory definition requires precise spatial and temporal constraints.
  • Current methods lack a standardized language for dynamic trajectory specification and datalink communication.
  • Dynamic tolerances based on navigation and traffic are crucial for safe and efficient air traffic management.

Purpose of the Study:

  • To propose a standard Trajectory Specification Language (TSL) for representing aircraft trajectories with dynamic tolerances.
  • To facilitate communication of trajectory specifications between air and ground systems via datalink.
  • To establish a flexible and efficient method for defining flight paths in complex air traffic scenarios.

Main Methods:

  • Development of a Trajectory Specification Language (TSL) based on Extensible Markup Language (XML).

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  • Defining dynamic tolerances relative to a reference trajectory based on navigation capabilities and traffic situation.
  • Utilizing datalink for transmitting trajectory requests and assignments.

    • Main Results:

    • A standardized XML-based TSL for representing aircraft trajectories with dynamic tolerances.
    • The capability to downlink trajectory requests (air-to-ground) and uplink assignments (ground-to-air).
    • Compatibility with Efficient XML Interchange (EXI) and Abstract Syntax Notation (ASN.1) for binary conversion.

    Conclusions:

    • The proposed TSL provides a standardized, efficient method for specifying and communicating dynamic aircraft trajectories.
    • TSL enhances air traffic management by enabling precise, adaptable flight path definitions.
    • The XML-based format ensures interoperability and can be optimized for operational use.