Procedural Trajectory Prediction for Airspace Violation Alerts
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Solution Overview
Problem
Current air traffic control systems face challenges in accurately predicting aircraft trajectories and generating timely and relevant alerts to prevent airspace violations, often resulting in missed alerts or false positives due to simplistic trajectory extrapolation methods.
Innovation Solution
The system compares recent aircraft trajectory data with procedural trajectory information specific to airports or airspaces, using a conflict detector unit with a procedural trajectory prediction unit to determine predicted trajectories and generate alerts for potential airspace violations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If simplistic trajectory extrapolation methods are used, then device complexity is reduced, but measurement precision of trajectory prediction deteriorates
Solution Approach 1:
The trajectory prediction system is segmented into multiple independent modules: a procedural trajectory database storing pre-defined flight paths, a real-time trajectory extractor capturing current aircraft position and velocity, and a prediction engine that combines these elements. This segmentation allows each module to specialize in specific tasks, improving overall prediction accuracy without proportionally increasing system complexity.
Solution Approach 2:
Procedural trajectory information is pre-computed and stored in a database before runtime operations. These pre-defined flight paths, including standard arrival and departure procedures, are prepared in advance and can be quickly referenced during real-time tracking, eliminating the need for complex real-time calculations of standard flight paths.
2Measurement precision
If procedural trajectory information is integrated, then trajectory prediction accuracy is improved, but device complexity increases
Solution Approach 1:
The procedural trajectory database serves multiple functions: it provides prediction data, validates extracted trajectories against standard procedures, and generates alerts for deviations. This multi-functionality reduces the need for separate validation and alerting systems, thereby limiting the increase in overall system complexity while maintaining improved prediction accuracy.
Solution Approach 2:
A trajectory prediction module acts as an intermediary between the procedural database and the alerting system. This mediator compares real-time extracted trajectories with predicted procedural trajectories and generates alerts only when significant deviations occur, simplifying the alerting logic while maintaining high prediction accuracy.
3Reliability
If real-time trajectory extraction and comparison is performed, then alert reliability is improved, but processing time increases
Solution Approach 1:
The system performs partial comparison by focusing only on critical trajectory parameters and segments where deviations are most likely to occur, such as approach and departure phases. Rather than continuously comparing all trajectory points, the system selectively analyzes key segments, maintaining alert reliability while reducing processing time.
Solution Approach 2:
When an aircraft is confirmed to be following a standard procedural path, the system skips detailed continuous comparison and only performs periodic checks. This allows the system to rush through routine monitoring phases quickly while maintaining reliability by periodically verifying trajectory adherence without excessive processing.
Data Source
AI summary
In one example, a method for generating air traffic alerts includes determining a predicted trajectory for a target air-craft, based at least in part on a comparison of information received on a recent trajectory of the target aircraft with a set of procedural trajectory information. The method further includes determining whether a violation of protected airspace is predicted between the target aircraft and an ownship, based at least in part on the predicted trajectory for the target aircraft and a predicted trajectory for the ownship. The method further includes generating an alert output in response to determining that the violation of protected airspace is predicted.