Vehicle Position Verification via Sensor Cross-Reference
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Solution Overview
Problem
Existing vehicle navigation systems are vulnerable to spoofing attacks, where third parties can corrupt satellite-based signals used for position determination, leading to unreliable position estimates.
Innovation Solution
A device that includes a memory to store a first position estimate of a first vehicle, a receiver to receive a second position estimate of a second vehicle, and sensors to generate sensor data for relative position estimates. The device uses processors to compare these estimates and determine the reliability of the first position estimate by matching sensor-based and satellite-based relative position estimates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If satellite-based signals are used for position determination, then position estimation capability is improved, but vulnerability to spoofing attacks increases
Solution Approach 1:
The patent introduces an intermediary verification mechanism that compares satellite-based position estimates with sensor-based relative position estimates. This intermediary comparison system acts as a mediator to detect spoofing attacks by identifying inconsistencies between the two positioning methods, thereby resolving the contradiction between maintaining satellite-based positioning capability and protecting against spoofing vulnerabilities.
2Reliability
If sensor-based relative position estimates are used for verification, then detection of spoofing attacks is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by using existing sensors (radar, lidar, cameras) for their primary purposes while also utilizing them for position verification against spoofing attacks. This allows the same hardware components to serve multiple functions, reducing the need for additional dedicated verification equipment and thereby limiting the increase in device complexity.
Data Source
AI summary
A device includes a memory configured to store a first position estimate of a first vehicle. The device also includes a receiver configured to receive a second position estimate of a second vehicle. The device further includes a sensor configured to generate sensor data indicating a first relative position estimate of the first vehicle relative to the second vehicle. The device also includes one or more processors configured to determine, based on a comparison of the first position estimate and the second position estimate, a second relative position estimate of the first vehicle relative to the second vehicle. The one or more processors are also configured to determine whether the first position estimate is reliable based at least in part on determining whether the first relative position estimate matches the second relative position estimate.