Vehicle Identification Using Radar Speed Correlation
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Solution Overview
Problem
Existing vehicle-to-vehicle communication techniques face challenges in accurately determining the association between detected vehicles and communicating vehicles due to errors in GPS location information, especially when multiple vehicles are traveling in the same direction in proximity to each other.
Innovation Solution
A vehicle identification apparatus equipped with a detection unit for speed detection and a communication unit for receiving speed information, which calculates an indicator value to determine the likelihood of vehicle association based on the speeds of detected and communicating vehicles, using a calculation unit and determination unit to assess matching degrees and variances in speed ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS location information is used to determine vehicle association, then the system can identify other vehicles through vehicle-to-vehicle communication, but great errors in GPS location information lead to great errors in determining the amount and direction of movement
Solution Approach 1:
The patent changes the parameter used for vehicle association determination from GPS location information to radar detection information. Specifically, it compares the relative position and relative speed obtained from radar detection with the position and speed differences calculated from vehicle-to-vehicle communication information, thereby avoiding the accuracy problems of GPS-based methods
Solution Approach 2:
The patent substitutes the GPS-based mechanical positioning system with a radar-based detection system. Instead of relying on GPS receivers and location calculations, the system uses radar to directly measure the position and speed of other vehicles, providing more accurate and reliable data for association determination
2Productivity
If GPS-based vehicle association determination is used, then communication with other vehicles can be established, but it becomes difficult to determine associations when multiple vehicles are traveling in the same direction in proximity to each other
Solution Approach 1:
The patent introduces relative speed as an additional parameter for vehicle association determination. By comparing both relative position and relative speed from radar with corresponding values from vehicle-to-vehicle communication, the system can accurately distinguish between multiple vehicles traveling in the same direction, solving the ambiguity problem of GPS-based methods
Solution Approach 2:
The patent uses radar detection information as an intermediary to verify and confirm vehicle associations. The radar provides independent measurement data that acts as a mediator to validate the associations determined through vehicle-to-vehicle communication, ensuring accuracy even when multiple vehicles are present
Data Source
AI summary
A vehicle identification apparatus mounted in a vehicle provided with a detection unit configured to detect a speed of a first other vehicle and a communication unit configured to receive information indicative of a speed of a second other vehicle from the second other vehicle. In the apparatus, a calculation unit calculates an indicator value indicative of a likelihood that the first and second other vehicles are the same, where the indicator value is defined as a function of the speed of the first other vehicle detected by the detection unit and the speed of the second other vehicle indicated by the information received by the communication unit. A determination unit determines whether or not the first and second other vehicles are the same on the basis of the indicator value calculated by the calculation unit.