Multiple Detection Zones for Runway Collision Avoidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing collision avoidance systems for runway safety use a single region of interest for all aircraft, which is a compromise due to varying navigation accuracy levels, leading to either false alarms or delayed alerts.
Innovation Solution
Implementing multiple detection zones based on individual aircraft navigation accuracy levels, with zone size determined by accuracy, ensuring a nominal certainty level before declaring an aircraft on the runway, thereby managing nuisance alerts and optimizing alert timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single region of interest is used for all aircraft, then the system is simple to operate, but position measurement precision deteriorates due to varying navigation accuracy levels
Solution Approach 1:
The single region of interest is divided into multiple detection zones with different sizes, each corresponding to a specific navigation accuracy level. Aircraft are assigned to appropriate detection zones based on their reported navigation accuracy, enabling precise position detection tailored to each aircraft's capabilities while maintaining simple system operation.
2Device complexity
If a single region of interest is used for all aircraft, then device complexity is reduced, but reliability deteriorates due to false alarms or delayed alerts
Solution Approach 1:
The detection system is segmented into multiple zones with different buffer distances from the runway centerline. Each zone corresponds to a navigation accuracy level, allowing the system to provide reliable detection for each aircraft type without requiring complex adaptive algorithms. The segmented structure maintains simplicity while improving reliability.
Solution Approach 2:
Different detection zones have different spatial characteristics (sizes and positions) matched to the local navigation accuracy requirements of specific aircraft. This local optimization ensures that each aircraft is evaluated against appropriate detection criteria, enhancing overall system reliability without increasing global complexity.
3Measurement precision
If a larger detection zone is used to account for position inaccuracies, then measurement precision is improved, but the system generates more nuisance alerts
Solution Approach 1:
The detection region is segmented into multiple zones with progressively larger buffer distances from the runway centerline. Each zone corresponds to a navigation accuracy level, with smaller zones for high-accuracy aircraft and larger zones for low-accuracy aircraft. This segmentation allows the system to achieve necessary detection precision while minimizing nuisance alerts by not using unnecessarily large detection zones for all aircraft.
4Object-generated harmful factors
If a smaller detection zone is used to reduce nuisance alerts, then false alarms are reduced, but detection reliability deteriorates for aircraft with lower navigation accuracy
Solution Approach 1:
The detection system is segmented into multiple zones, with each zone's size matched to the navigation accuracy of aircraft using that zone. Aircraft with lower navigation accuracy are assigned to larger detection zones that account for their position uncertainties, ensuring reliable detection without generating false alarms from using uniformly small zones.
Data Source
AI summary
Embodiments of the present invention relate to avionics systems, and more particularly, to collision avoidance systems. In one embodiment, a system is delineated comprising a plurality of detection zones for a plurality of aircraft and means for issuing a report based on one or more of the plurality of detection zones.