Radar Tracing Position Correction Using Laser Scanner Contour Points
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Solution Overview
Problem
Radar sensors struggle to accurately determine the position of sensed objects, making it difficult to design systems that rely on precise vehicle tracing information.
Innovation Solution
A system and method using a laser scanner to correct the tracing position of a radar sensor by comparing the sensed position with contour points formed by scanning another vehicle, allowing for accurate positioning through synchronization of radar and laser sensor signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a radar sensor is used to sense another vehicle, then the sensing range and detection capability are improved, but the tracing position accuracy deteriorates because the radar sensor cannot accurately know the kind of the sensed object and traces an unsspecific point
Solution Approach 1:
The patent combines radar sensor and laser scanner to create a fused sensing system. The radar provides detection capability and rough positioning, while the laser scanner provides precise contour information. By merging the data from both sensors, the system achieves accurate object identification and precise tracing position determination that neither sensor could achieve alone.
Solution Approach 2:
The laser scanner acts as an intermediary that bridges the gap between radar detection and precise positioning. It provides contour point information that serves as a reference for correcting the radar's tracing position, enabling the system to identify object types and determine accurate positions without directly relying on radar's limited resolution.
2Loss of information
If a camera is added to analyze object information, then the object type determination is improved, but the tracing position accuracy of the radar sensor still cannot be recognized
Solution Approach 1:
The patent segments the sensing functions into distinct components: radar for detection and rough positioning, camera for object type identification, and laser scanner for precise contour mapping. Each sensor handles its specialized function, and the results are integrated to achieve both accurate object identification and precise tracing position.
Solution Approach 2:
The patent introduces a new dimension of information by adding laser scanner contour data to the existing radar and camera systems. This third dimension of precise spatial contour information enables accurate tracing position determination that cannot be achieved by combining only radar range data and camera image data.
3Measurement precision
If multiple sensors are integrated to improve sensing performance, then the object determination accuracy is improved, but the system complexity increases
Solution Approach 1:
The patent designs the sensing system with multi-functional sensors that can serve multiple purposes. The laser scanner not only provides contour information for position correction but also contributes to object shape recognition. The radar provides both detection and rough positioning. This multi-functionality reduces the need for additional specialized sensors, thereby controlling system complexity while maintaining high determination accuracy.
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
The system effectively corrects unspecific tracing positions to specific ones, enabling more accurate vehicle tracking and facilitating system design based on radar sensors.
Implementation Method 1
a contour point formed when a laser scanner of the vehicle scans another vehicle
Implementation Method 2
information regarding a tracing position of another vehicle sensed by the radar sensor
Data Source
AI summary
Provided are a system and a method for correcting a tracing-position of another vehicle sensed by a radar sensor using a laser scanner, which compare an unspecific tracing position of the radar sensor sensing another vehicle and a contour point acquired by a laser scanner and correct the tracing position of the radar sensor with a position most approximate to the vehicle in the contour point. Therefore, the radar sensor sensing an object in the vicinity of the vehicle recognizes a tracing position of another vehicle to facilitate design of a radar sensor based system.