Vehicle Positioning Using V2V Relative Data
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Solution Overview
Problem
Existing vehicle positioning systems struggle to accurately determine a vehicle's position down to a specific lane on multi-lane roads, especially in complex traffic situations, without relying on cost-intensive hardware like differential GPS.
Innovation Solution
A method and device that combines self-localization using satellite signals with relative positioning data from other vehicles, utilizing GNSS receivers, video sensors, and vehicle-to-vehicle communication to improve lane-accurate positioning, allowing for cooperative self-localization among vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If self-localization using only satellite signals is used, then the device complexity is low, but the measurement precision of lane-accurate positioning is insufficient
Solution Approach 1:
The patent combines satellite-based self-localization with relative positioning data from other vehicles to achieve lane-accurate positioning. The determination device integrates positioning results from multiple sources (satellite signals and V2V communication) to improve measurement precision without requiring expensive specialized hardware like differential GPS
Solution Approach 2:
The system uses universal components such as GNSS receivers, video sensors, and V2V communication modules that serve multiple functions. These components not only enable positioning but also support environment sensing and vehicle identification, reducing the need for dedicated expensive hardware
2Measurement precision
If differential GPS or cost-intensive hardware is used, then the measurement precision of lane-accurate positioning is improved, but the device complexity and cost increase
Solution Approach 1:
Instead of using expensive differential GPS hardware, the system creates a virtual positioning enhancement by copying and utilizing positioning data from other vehicles through V2V communication. This allows the ego vehicle to achieve high-precision positioning by leveraging the positioning capabilities of surrounding vehicles
Solution Approach 2:
The patent introduces V2V communication as an intermediary mechanism to transfer positioning information between vehicles. This mediator enables the sharing of positioning data without requiring direct hardware upgrades in each vehicle, thus maintaining low device complexity while achieving high precision
3Reliability
If relative positioning data from other vehicles is integrated, then the robustness of self-localization is improved, but the device complexity increases due to additional sensors and communication modules
Solution Approach 1:
The system performs preliminary identification of other vehicles using video sensors before integrating their positioning data. This preliminary action ensures that only relevant and verified vehicle positions are used, improving robustness while avoiding unnecessary processing of irrelevant data
Solution Approach 2:
The determination device continuously receives positioning data from other vehicles and uses this feedback to refine and update the ego vehicle's position estimate. This feedback mechanism improves reliability by constantly validating and adjusting the positioning result based on multiple independent measurements
Data Source
AI summary
A method for determining a position of a vehicle. The method has a step of carrying out self-locating of the vehicle using a locating device of the vehicle in order to generate a provisional position of the vehicle. The method also has a step of reading in a position signal, the position signal representing a position of another vehicle. Moreover, the method has a step of ascertaining a relative position of the vehicle relative to the other vehicle with the aid of the position signal in order to determine the position of the vehicle using the self-locating and the relative position.