Flight Trajectory Comparison Using Segmented Analysis
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Solution Overview
Problem
Current methods for comparing flight trajectories of aircraft are time-consuming, especially when verifying if two trajectories have a common portion, which can lead to delays in activating a new trajectory during low-altitude flights.
Innovation Solution
A method and system that compare flight trajectories segment by segment, automatically identifying identical segments in both lateral and vertical planes, reducing computational burden and enabling faster verification of a common trajectory portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If trajectory comparison is performed point by point, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The trajectory is divided into sequential segments (first segment, second segment, etc.) rather than comparing all points simultaneously. The comparison proceeds segment by segment, allowing the system to identify common portions efficiently and stop comparison once the required common distance is confirmed, thus reducing total comparison time while maintaining accuracy.
2Productivity
If trajectory calculation is performed before flight, then productivity is improved, but loss of time occurs during transition between trajectories
Solution Approach 1:
The system pre-calculates multiple possible trajectories (current trajectory and alternative trajectories) before they are needed. By having these trajectories prepared in advance and comparing them segment by segment, the system can quickly identify a suitable common portion and execute the transition without delay, thus maintaining productivity while minimizing transition time.
Data Source
AI summary
A method and device for automatically comparing two flight trajectories for an aircraft includes a central processing unit having a first comparison element for automatically comparing lateral trajectories of the two flight trajectories, and a second comparison element for automatically comparing vertical trajectories of these two flight trajectories, these comparisons being carried out successively leg by leg of the flights, these comparisons being carried out as long as the respective successive legs are identical and at least for a predefined distance in the horizontal plane.