Road Facility Tracking Using Vehicle Motion and Radar Coordinates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radar systems face challenges in accurately tracking road facilities like guardrails and tunnels due to decreasing signal intensity, leading to deteriorated detection performance and tracking accuracy, especially when these structures are parallel to the vehicle's direction.
Innovation Solution
A road facility tracking apparatus that utilizes a coordinate generation unit to generate initial coordinates based on vehicle location and radar detection information, and a coordinate update unit to update these coordinates using vehicle motion characteristics, while a ghost remover unit deletes ghost targets to improve tracking accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If radar is used to detect road facilities parallel to vehicle direction, then detection range is extended, but signal intensity decreases leading to deteriorated detection performance
Solution Approach 1:
The system changes the parameter used for tracking from signal intensity to relative position and motion characteristics. By using position coordinates and velocity information instead of relying on signal strength, the system maintains detection performance even when signal intensity decreases for parallel road facilities
Solution Approach 2:
The system implements continuous feedback tracking by repeatedly measuring the relative position and motion characteristics of road facilities. This feedback mechanism allows the system to maintain accurate tracking information over time, compensating for the decreasing signal intensity through cumulative position updates
2Reliability
If tracking information is used for continuous structures, then tracking performance against surrounding vehicles is improved, but tracking accuracy of road facilities deteriorates due to decreasing signal intensity
Solution Approach 1:
The system applies different tracking strategies for different object types. For road facilities, it uses position-based tracking with motion characteristics, while for surrounding vehicles it can use signal intensity-based tracking. This localized approach optimizes tracking accuracy for each specific object type
Solution Approach 2:
The system changes the tracking parameters from signal intensity-based to position and motion characteristics-based for road facilities. By using relative position coordinates and velocity information, the system achieves accurate tracking without relying on signal intensity, thereby improving tracking accuracy for parallel structures
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the detection performance and accuracy of tracking road facilities by addressing signal intensity issues and removing ghost targets, thereby improving the reliability of Advanced Driver Assistance Systems (ADAS) applications.
Implementation Method 1
RADAR, i.e., Radio Detection And Ranging is a detection apparatus that uses a transmission antenna to radiate a radio wave and uses a receiver antenna to receive a signal reflected by an object
Implementation Method 2
The radar detects information about an object by using a time difference between a transmitted signal and a received signal and a Doppler shift of the received signal with respect to the transmitted signal
Data Source
AI summary
The present disclosure in some embodiments provides a method and an apparatus for tracking a road facility based on vehicle motion characteristics. In at one aspect, the present disclosure provides an apparatus for tracking a road facility, including a coordinate generation unit configured to generate initial coordinates based on a location of a vehicle and a plurality of detection information items collected by a radar included in the vehicle, the initial coordinates being generated for updating tracking coordinates of the road facility, and a coordinate update unit configured to update, based on motion characteristics of the vehicle, the tracking coordinates of the road facility in response to vehicle coordinates that change over time.