Radar Alignment via Millimeter Wave Imaging
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Solution Overview
Problem
Current methods for determining mechanical misalignment in vehicle radar systems are time-consuming and costly, requiring the removal of covers for optical testing, which limits accuracy and efficiency.
Innovation Solution
A method using millimeter wave imaging to determine the three-dimensional alignment of radar system components without removing covers, by emitting and receiving millimeter waves to locate and process relative phase information for precise position and orientation analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical systems are used to test and evaluate misalignment, then measurement precision can be achieved, but the testing process becomes time-consuming and costly due to requiring cover removal
Solution Approach 1:
The patent replaces the mechanical/optical testing system with a radar-based electromagnetic wave system. Instead of using optical cameras and mirrors that require direct line-of-sight access to the radar unit surface, the invention uses radar waves that can penetrate the cover and directly interact with the radar unit, eliminating the need for cover removal and manual positioning operations.
Solution Approach 2:
The patent introduces radar waves as an intermediary that can pass through the cover material to reach the radar unit. This intermediary enables measurement without direct contact or line-of-sight requirements, allowing the testing system to operate through the cover rather than requiring its removal.
2Measurement precision
If optical systems are used for misalignment testing, then position can be determined, but device complexity increases due to the need for cover removal and direct access
Solution Approach 1:
The patent replaces complex mechanical positioning and optical alignment systems with a simpler radar-based electromagnetic measurement system. The radar system naturally provides three-dimensional positioning capabilities without requiring mechanical stages, mirrors, or direct optical access, thereby reducing overall system complexity.
3Ease of operation
If covers are removed for optical testing, then direct access to radar unit surface is obtained, but the testing process becomes expensive and less efficient
Solution Approach 1:
The patent uses radar waves as an intermediary that can penetrate the cover material, providing direct interaction with the radar unit surface without physically removing the cover. This maintains ease of operation by allowing measurements through the intact cover while dramatically improving productivity by eliminating cover removal and reinstallation steps.
4Productivity
If mechanical misalignment is not detected, then production can proceed quickly, but radar signal footprint is limited and system performance is impaired
Solution Approach 1:
The patent implements a rapid radar-based measurement system that can quickly determine three-dimensional position and orientation of the radar unit, enabling fast detection of mechanical misalignment. This maintains high production speed while ensuring reliable detection of alignment issues that would otherwise limit radar signal footprint and impair system performance.
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
Enables contactless, accurate, and cost-effective detection of misalignment, reducing testing time and improving precision compared to optical systems, allowing for precise radar signal footprint mapping and calibration.
Implementation Method 1
imaging the radar system using millimeter waves emitted by an imaging system
Implementation Method 2
locating in the image obtained the highest magnitude reflection coinciding with at least one of an expected location and an expected distance of the surface of a first component of the radar system
Data Source
AI summary
A method for determining the three-dimensional alignment of components of a radar system is described. The radar system is provided that comprises at least one portion which is permeable by radar signals. The radar system is imaged by using millimeter waves emitted by an imaging system. In the image obtained, it is determined the highest magnitude reflection coinciding with at least one of an expected location and an expected distance of the surface of a first component of the radar system being of interest. At least one of the position and the distance of that surface is determined. From the measurement, the relative phase information received from each portion of that surface at the determined position and/or the determined distance is obtained. Processing the phase information obtained so as to obtain the azimuth and tilt of the surface. Further, a testing system is described.