Positioning Data Verification System for GNSS Spoofing Detection
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Solution Overview
Problem
Global navigation satellite systems (GNSS) and GPS signals are susceptible to interference from spoofing and jamming, leading to inaccurate positional data, which can compromise the safe and efficient operation of vehicles by altering their speed, braking, and navigation.
Innovation Solution
A method and system that examines positional data signals for variations and anomalies, using multiple antennas and a security controller to identify and filter out inaccurate data from spoofing or jamming devices, ensuring accurate navigation and control of vehicles by integrating integrity checks and sensor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS or GNSS is used to determine precise position and navigation information, then the vehicle can obtain location, speed, and timing data, but the system becomes vulnerable to spoofing and jamming that can alter or block signals
Solution Approach 1:
The patent introduces multiple independent signal sources (satellites, ground-based transmitters, inertial sensors) as intermediaries to verify positioning data. These intermediaries provide redundant measurement paths that can cross-validate each other, detecting spoofed signals when inconsistencies arise between independent sources
Solution Approach 2:
The system continuously monitors signal characteristics, receiver status, and positioning consistency, feeding this information back to detect anomalies. When spoofing or jamming is detected through feedback mechanisms, the system can alert operators or switch to alternative positioning methods, maintaining reliability despite signal interference
2Reliability
If multiple signal sources and verification methods are added to detect spoofing and jamming, then system reliability improves, but device complexity increases
Solution Approach 1:
The patent designs the positioning system to perform multiple functions using integrated components. The same receiver infrastructure processes both navigation data and spoofing detection signals, while inertial sensors serve dual purposes for navigation and verification, reducing overall system complexity despite enhanced verification capabilities
Solution Approach 2:
The system combines multiple positioning technologies (GNSS, inertial navigation, ground-based augmentation) into a unified integrated navigation system. By merging these systems and sharing common processing infrastructure, the patent achieves comprehensive spoofing detection without proportionally increasing complexity, as the combined system uses shared hardware and algorithms
Data Source
AI summary
A system and method examine positional data signals onboard a vehicle to identify one or more variations in positioning data of the positional data signals. The system and method identify inaccurate positioning data in the positional data signals based on the one or more variations in the positioning data that are identified.