GNSS Sensor Mode Deactivation for Positioning Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current autonomous vehicles rely on GNSS sensors for accurate positioning, but these sensors can provide unreliable data during severe solar storms or extreme weather conditions, leading to potential position inaccuracies and safety risks.
Innovation Solution
A method for operating a GNSS sensor in a vehicle, where at least one operating mode is deactivated if satellite data is unsuitable, either directly by the sensor detecting corrupted data or indirectly through external communication, to prevent inaccurate positioning, involving steps of receiving, evaluating satellite data, and deactivating the sensor mode, with options for area-dependent or time-dependent deactivation and reporting to a superordinate system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the GNSS sensor operates continuously to provide positioning data, then the availability of positioning information is improved, but the reliability of positioning data deteriorates during solar storms or extreme weather conditions
Solution Approach 1:
The GNSS sensor system dynamically adjusts its operating state based on real-time signal quality assessment. The control unit monitors satellite signal characteristics and automatically switches between operational modes (normal operation, degraded operation, or shutdown) to maintain reliability while minimizing disruption to positioning availability
Solution Approach 2:
The system implements a feedback mechanism where the control unit continuously evaluates satellite signal quality metrics and uses this information to control the operational state of the GNSS sensor. This closed-loop control ensures that the sensor operates reliably by shutting down or switching modes when signal quality deteriorates below acceptable thresholds
2Reliability
If the GNSS sensor is deactivated during poor satellite data conditions, then the reliability of positioning is improved, but the loss of positioning information increases
Solution Approach 1:
Instead of completely deactivating the GNSS sensor during poor signal conditions, the system applies partial action by switching to alternative operating modes that provide degraded but still useful positioning information. This approach maintains some level of positioning availability while filtering out severely corrupted data, thus reducing information loss while preserving reliability
Solution Approach 2:
The control unit changes operational parameters of the GNSS sensor based on signal quality assessment. This includes adjusting evaluation thresholds, switching between different satellite constellations or operating modes, and modifying data processing parameters to maintain positioning functionality under degraded signal conditions
Data Source
AI summary
A method for operating a GNSS sensor of a vehicle having control operations influenceable via an electronic control unit includes receiving satellite data, evaluating the satellite data, and deactivating at least one operating mode of the GNSS sensor when at least a portion of the satellite data is unsuitable for determining the position of the vehicle.