Automotive Radome Testing for Transmission, Reflection, and Angle Effects
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Solution Overview
Problem
Current methods for testing automotive radome bodies do not provide sufficient information about the attenuation and homogeneity of the radome body, particularly regarding angle dependency, which can lead to reduced radar detection range and accuracy.
Innovation Solution
A method and apparatus that test the transmission and reflection properties of an automotive radome body by sending signals from both sides, using a combination of transmission and receiving antennas to determine reflection and transmission properties, including angular behavior, and generate detailed images of the radome body's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the radome body is designed with attractive appearance and integrated logo, then optical quality is improved, but radar signal transmission is degraded
Solution Approach 1:
The radome body is designed with different local properties: the logo area uses a material composition or structure that provides good optical appearance, while other areas are optimized for radar signal transmission. This allows different regions of the radome to have specialized functions, resolving the conflict between aesthetic requirements and radar performance.
2Ease of operation
If conventional single-side testing is used, then testing simplicity is improved, but measurement precision is degraded
Solution Approach 1:
The testing process is segmented into multiple independent measurement campaigns: first testing the reception side with transmission antennas facing the first side, then testing the transmission side with transmission antennas facing the second side. Each campaign provides specific information about particular properties, and the results are combined to achieve comprehensive, precise characterization of the radome body.
3Loss of information
If signals are sent from both sides of the radome body, then information completeness is improved, but device complexity is degraded
Solution Approach 1:
The testing apparatus is designed with universal, multi-functional components. The same antenna system can be configured to face either the first side or the second side of the radome body, and the same evaluation device processes data from both testing campaigns. This multi-functionality reduces the need for separate dedicated equipment for each side, thereby limiting the increase in device complexity while achieving complete information gathering.
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
This approach provides a comprehensive analysis of the radome body's performance, enabling early detection of non-transparent areas and ensuring optimal radar signal transmission, thereby enhancing radar system performance.
Implementation Method 1
A second signal is sent via at least one remote transmission antenna (22) facing a second side (30) of the radome body (26)
Implementation Method 2
the reflected part of the first signal is received by several receiving antennas (18) of the antenna system (12) facing the first side (28)
Implementation Method 3
the transmitted part of the second signal is received by the several receiving antennas (18) in order to determine the transmission properties of the radome body (26)
Data Source
Figure 1~2
AI summary
A method for testing the transmission and reflection properties of an automotive radome body (26) is described. An automotive radome body (26) is placed at an installation location (24). A first signal is sent via at least one transmission antenna (16) of an antenna system (12) facing a first side (28) of the radome body (26) wherein the reflected part of the first signal is received by several receiving antennas (18) of the antenna system (12) facing the first side (28) in order to determine the reflection properties of the radome body (26). A second signal is sent via a remote transmission antenna (22) facing a second side (30) of the radome body (26) being opposite to the first side (28) wherein the transmitted part of the second signal is received by the several receiving antennas (18) of the antenna system (12) in order to determine the transmission properties of the radome body (26). Further, an apparatus (10) is described.