Aircraft Flight Control Spoofing Detection via Deviation Analysis
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Solution Overview
Problem
Current systems face challenges in accurately detecting satellite positioning system spoofing in aircraft, particularly in unmanned aircraft, where a spoofed signal can cause flight track deviations from scheduled routes, leading to delayed recognition of the issue.
Innovation Solution
An aircraft flight control apparatus and method that measures the aircraft's position and flight track, determining if a spoofed signal is received by calculating the deviation from a scheduled route, using a database to differentiate between spoofing and potential aircraft damage, and implementing appropriate countermeasures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the aircraft uses satellite positioning system signals for navigation, then the flight track can be measured and monitored, but the system becomes vulnerable to spoofing attacks that cause gradual deviation from the scheduled route
Solution Approach 1:
The system continuously monitors the own-aircraft deviation amount from the scheduled flight route and uses this feedback to detect spoofing attempts. When the deviation exceeds a threshold or shows abnormal patterns, the system triggers an alarm and switches to alternative navigation methods, creating a closed-loop control system that detects and responds to spoofing in real-time
Solution Approach 2:
The patent introduces an intermediary detection mechanism that compares the satellite positioning data with the scheduled flight route to identify discrepancies. This intermediary layer acts as a mediator between the raw positioning data and the navigation system, filtering out spoofed signals by validating them against expected flight parameters
2Reliability
If the system monitors flight track deviation to detect spoofing, then spoofing can be identified, but it becomes difficult to distinguish between spoofing and actual aircraft damage
Solution Approach 1:
The system segments the deviation detection into multiple independent analysis components: geometric deviation analysis, temporal pattern analysis, and cross-validation with other navigation systems. By dividing the detection process into separate modules, the system can identify spoofing-specific patterns while filtering out deviations caused by aircraft damage through multi-dimensional verification
3Speed
If the system reacts immediately to flight track deviation, then spoofing can be detected quickly, but false alarms may occur due to normal flight variations or aircraft damage
Solution Approach 1:
The system performs preliminary analysis of deviation patterns before triggering alarms, establishing baseline thresholds and patterns for normal flight variations. By pre-configuring acceptance criteria and deviation thresholds based on historical flight data, the system can quickly identify genuine spoofing attempts while filtering out normal variations, reducing false alarms while maintaining fast detection response
Solution Approach 2:
The system dynamically adjusts the deviation thresholds and alarm triggers based on flight conditions, aircraft type, and environmental factors. Rather than using fixed thresholds, the system adapts its detection parameters in real-time to account for normal flight variations, ensuring rapid detection of spoofing while minimizing false alarms caused by dynamic flight conditions
Data Source
AI summary
An aircraft flight control apparatus includes a flight track acquiring unit and a determining unit. The flight track acquiring unit is configured to measure a position of an aircraft to acquire a flight track of the aircraft. The determining unit is configured to determine, when an own-aircraft deviation amount gradually increases, whether the aircraft receives a spoofed signal as a satellite positioning system signal, on the basis of the own-aircraft deviation amount. The own-aircraft deviation amount is an amount of deviation of the flight track acquired by the flight track acquiring unit from a scheduled flight route of the aircraft.