Receiver Geolocation Authentication Against Spoofed Satellite Signals
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Solution Overview
Problem
Existing satellite-based geolocation systems face inaccuracies in urban and wooded environments, are vulnerable to signal blocking, require numerous satellites, and are susceptible to fraudulent signal imitation, which compromises transaction security and geolocation integrity.
Innovation Solution
A method that uses additional electromagnetic signals with digital signatures to authenticate geolocation, incorporating weather data and signal verification to ensure accuracy and prevent fraudulent signals, compatible with existing GPS systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If satellite-based geolocation systems are used to determine position, then geolocation can be obtained, but the accuracy is reduced in urban and wooded environments due to signal blocking and attenuation
Solution Approach 1:
The system performs preliminary authentication of geolocation signals before using them for positioning. By verifying the authenticity of signals from multiple emitters in advance, the system ensures that only verified signals are used for geolocation calculation, preventing fraudulent or blocked signals from degrading accuracy
Solution Approach 2:
The system incorporates feedback mechanisms where the receiver verifies signal authenticity and provides information about signal quality. This feedback loop allows the system to identify and exclude compromised signals from the geolocation calculation, maintaining accuracy in challenging environments
2Reliability
If additional authentication signals with digital signatures are incorporated, then geolocation integrity and security are improved, but the complexity of the system increases
Solution Approach 1:
The authentication mechanism uses universal digital signature technology that can be integrated into existing geolocation systems. The same authentication framework can verify signals from multiple emitters simultaneously, providing multi-functionality without proportionally increasing complexity
Solution Approach 2:
Digital signatures act as an intermediary verification layer between the emitters and the receiver. This intermediary mechanism provides robust authentication without requiring direct complex communication protocols between all system components, simplifying the overall system architecture
3Ease of operation
If electromagnetic signals are used for geolocation, then position can be determined, but the signals are vulnerable to fraudulent imitation compromising transaction security
Solution Approach 1:
The system applies preliminary anti-action by authenticating signals before they can be used for fraudulent purposes. The digital signature verification occurs in advance of any transaction or position-dependent action, preventing fraudulent signals from compromising security
Solution Approach 2:
The system converts the potential harm of signal vulnerability into a benefit by using the same electromagnetic signal medium for both transmission and authentication. The digital signatures embedded in the signals turn the signal itself into a vehicle for proving authenticity rather than just a carrier of position data
Data Source
AI summary
A method for certifying the geolocation of a receiver, including, prior to said certification, receiving, at predetermined times, in addition to the geolocation signals emitted by a plurality of emitters and used to compute said geolocation, a predetermined number of additional electromagnetic signals emitted by the same emitters and including data used to authenticate the geolocation, the method comprising determining the authenticity of the geolocation on the basis of the additional electromagnetic signals.