Radar Beam Pattern Control for Multipath-Resistant Object Clustering
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Solution Overview
Problem
Existing radar systems face challenges in accurately detecting objects due to noise and multipath reflections, leading to false positives and negatives, which affect the clustering process and detection accuracy.
Innovation Solution
The electronic device transmits transmission waves multiple times with varied radiation patterns, allowing for improved object detection by selecting appropriate clusters based on repeated signal processing and noise suppression techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If clustering is performed on radar detection results without repeated transmissions with varied radiation patterns, then the detection process is simple and fast, but detection accuracy deteriorates due to noise and multipath reflections
Solution Approach 1:
The system performs preliminary actions by transmitting radar waves multiple times with varied radiation patterns before performing clustering. This preliminary repeated transmission with variation allows the system to gather more reliable detection data, filter out noise and multipath reflections, and improve overall detection accuracy before the actual object detection clustering step.
Solution Approach 2:
The system changes the radiation pattern parameter of the transmitted radar waves across multiple transmissions. By varying the radiation pattern (e.g., beam direction, coverage area) for each transmission, the system obtains detection results from different perspectives, which improves clustering accuracy and reduces false positives and negatives.
2Measurement precision
If repeated transmissions with varied radiation patterns are performed, then detection accuracy improves by reducing noise and multipath reflections, but the time required for detection increases
Solution Approach 1:
The system employs periodic action by performing repeated transmissions in a structured sequence with varied radiation patterns. This periodic transmission approach allows the system to efficiently gather multiple detection results in an organized manner, improving accuracy while managing time consumption through systematic data collection rather than random repeated measurements.
3Reliability
If clustering is performed on detection results without selecting specific clusters, then the clustering process is simple, but false positives and negatives increase
Solution Approach 1:
The system uses feedback from multiple repeated transmissions with varied radiation patterns to guide the clustering process. By analyzing detection results from multiple perspectives and using this feedback information, the system can identify reliable clusters that correspond to actual objects while filtering out false positives and negatives through the accumulated evidence from repeated measurements.
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 enhances the accuracy of object detection by reducing the impact of noise and multipath reflections, resulting in more reliable clustering and improved detection performance.
Implementation Method 1
various techniques of radar (radio detecting and ranging) for measuring a distance or the like to an object such as an obstacle by transmitting a radio wave such as a millimeter wave and receiving a wave reflected from the object
Implementation Method 2
receiving a wave reflected from the object
Data Source
AI summary
An electronic device includes a transmission antenna that transmits a transmission wave, a reception antenna that receives a reflected wave, which is the reflected transmission wave, a controller that controls a radiation pattern of the transmission wave, a signal processor that detects an object on the basis of a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The controller performs control such that, when the transmission wave is transmitted a plurality of times in certain units, a transmission wave with a varied radiation pattern is included at least once. The signal processor outputs a result of the detection of the object on the basis of selected clusters that are, among a plurality of clusters obtained by performing clustering on results of detection performed on the object the plurality of times, clusters other than a cluster with a most distant representative point.