Aircraft Collision Avoidance Broadcast with Compressed Position Data
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Solution Overview
Problem
Existing aircraft collision avoidance systems have limitations in accuracy and information broadcast, particularly under good visibility conditions, due to insufficient data transmission and coarse accuracy, which increases the risk of mid-air collisions.
Innovation Solution
A broadcast device that uses a GNSS receiver and additional sensors to determine precise position data, which is then compressed and encoded for efficient transmission, allowing for higher update rates and improved situational awareness through enhanced collision probability calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If position data is transmitted with high precision, then measurement precision is improved, but bandwidth consumption increases
Solution Approach 1:
The patent applies local quality by transmitting full-precision position data only when collision risk is detected, while transmitting compressed position data when no collision risk exists. This selective approach optimizes bandwidth usage while maintaining measurement precision when necessary.
Solution Approach 2:
The patent dynamically adjusts the transmission precision of position data based on real-time collision risk assessment. The system transitions between two operational modes: high-precision transmission during collision risk and compressed transmission during normal operation, making the system adaptive to changing conditions.
2Reliability
If collision risk assessment is performed continuously with high accuracy, then reliability is improved, but computational complexity increases
Solution Approach 1:
The patent implements self-service by having each aircraft independently perform collision risk assessment using its own position data and the position data of other aircraft. This distributed approach eliminates the need for complex centralized computation while maintaining high reliability through local decision-making.
Solution Approach 2:
The patent replaces complex mechanical collision avoidance systems with an information-based electronic system that uses data transmission and computational algorithms to assess collision risk, simplifying the overall system while improving reliability.
3Loss of energy
If position data is compressed for transmission, then bandwidth usage is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent applies local quality by transmitting compressed position data only when no collision risk is detected, accepting reduced precision in exchange for bandwidth savings during normal operation. When collision risk arises, the system switches to high-precision transmission.
Solution Approach 2:
The patent dynamically adjusts data compression levels based on collision risk assessment, transitioning between compressed and uncompressed position data transmission modes to balance bandwidth efficiency and measurement precision according to operational conditions.
Data Source
AI summary
A broadcast device for wirelessly broadcasting information pertaining to a first aircraft includes a positioning device configured to determine a position of the broadcast device. The position comprises a latitude, a longitude, and an altitude. A control unit of the broadcast device is configured to receive this position via an internal bus. Then, the control unit compresses the latitude and the longitude and generates a data packet comprising the compressed latitude, the compressed longitude, the altitude, and an identifier of the broadcast device. Thus, bandwidth is saved compared to broadcasting the uncompressed position. On the receiver side, the compressed longitude and latitude are uncompressed using the principle of locality due to limited radio range. This way, an efficient yet unambiguous collision avoidance system for aircraft with an improved accuracy can be implemented.