Electronic Apparatus for Millimeter-Wave Radar Signal Correction
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Solution Overview
Problem
The detection strength of radio wave sensors, such as millimeter wave radars, varies depending on the direction of the object relative to the sensor, affecting the accuracy of object detection.
Innovation Solution
An electronic device and method that adjust the signal strength of reception signals based on the directivity of transmission and reflection waves, using millimeter wave radar to generate two-dimensional point cloud information and improve object detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radio wave sensors are used for object detection, then detection capability is achieved, but detection strength varies depending on direction reducing accuracy
Solution Approach 1:
The patent changes the parameter of signal strength by applying correction values that compensate for directional variations. The controller adjusts the reception signal strength based on the angular relationship between the sensor and the object, transforming the raw signal into a corrected signal that accounts for directivity effects, thereby achieving consistent detection accuracy across different directions.
2Measurement precision
If directivity of transmission wave is used for focused detection, then detection capability in specific direction is improved, but detection accuracy in other directions deteriorates
Solution Approach 1:
The patent applies local quality by providing direction-specific correction values tailored to each angular position. Instead of using a uniform correction approach, the system assigns unique correction characteristics to different directional zones, allowing optimal detection accuracy in each local direction while maintaining overall omnidirectional coverage through the combination of all directional corrections.
3Measurement precision
If correction values are applied to all reception signals, then detection accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-calculating and storing correction values in a lookup table before actual object detection occurs. The correction values for different angular positions are computed in advance and saved in memory, allowing the controller to simply retrieve and apply the appropriate correction value during detection without performing complex real-time calculations, thus reducing processing complexity while maintaining accuracy improvement.
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 accuracy of object detection by reducing the effects of directivity on detection strength, allowing precise identification of objects in three-dimensional spaces using image recognition and machine learning.
Implementation Method 1
a reception signal received as a reflection wave generated by the transmission wave being reflected by the object
Data Source
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AI summary
An electronic device includes a controller configured to detect an object based on a transmission signal transmitted as a transmission wave and a reception signal received as a reflection wave generated by the transmission wave being reflected by the object. The controller adjusts a signal strength of the reception signal in accordance with a directivity of at least one of the transmission wave or the reflection wave.