Surrounding Vehicle Position Correction for GPS-Error ADAS
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Solution Overview
Problem
Advanced driver assistance systems (ADAS) face inaccuracies in position information received from surrounding vehicles due to errors in GPS signals, leading to incorrect identification of front vehicles and potential failure in emergency braking systems.
Innovation Solution
A system and method that corrects position information of surrounding vehicles by comparing sensor-obtained data with V2V communication data, using a front vehicle information obtaining unit to measure distance and calculate positions, and a position information correcting unit to generate correction values and update travel maps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If position information is received from surrounding vehicles through V2V communication, then the quantity of information is increased, but measurement precision deteriorates due to GPS signal errors
Solution Approach 1:
The system uses sensor-obtained position information as feedback to verify and correct the position data received from surrounding vehicles. The sensor unit continuously monitors actual positions, and when discrepancies are detected between V2V received data and sensor data, correction values are calculated and applied to maintain accuracy while utilizing multiple information sources
Solution Approach 2:
A position information correcting unit acts as an intermediary between the V2V communication system and the ADAS control system. This intermediary unit receives position information from surrounding vehicles, compares it with sensor data, calculates correction values, and outputs corrected position information, thereby mediating the conflict between quantity and precision
2Device complexity
If GPS-based position information from surrounding vehicles is used, then device complexity is reduced, but reliability deteriorates due to GPS signal errors causing misidentification of front vehicles
Solution Approach 1:
The system merges two position information acquisition methods: V2V communication (low complexity) and sensor-based detection (high reliability). By combining these methods and using sensor data to correct V2V data, the system achieves both low complexity and high reliability in front vehicle identification
Solution Approach 2:
The system dynamically changes the parameter of position information accuracy by applying correction values to V2V received data based on sensor measurements. This parameter change ensures that position information maintains high reliability without requiring a complete switch to more complex sensor-based systems
Data Source
AI summary
The present invention relates to a system and a method for correcting position information of a surrounding vehicle, which provide accurate position information of a surrounding vehicle by correcting the position information of the surrounding vehicle received through vehicle-to-vehicle communication, and identifies a license-plate number of a front vehicle through a sensor mounted in a vehicle, calculates a position of the front vehicle, and compare position information, which is included in information including the identified number of the front vehicle in information received from the surrounding vehicle, with the calculated position of the front vehicle to correct the position information of the surrounding vehicle.