Orientation-Based Detection Signal Transmission to Reduce Radar Interference
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Solution Overview
Problem
Interference between vehicle radars using the same transmit frequency band leads to inaccurate determination of relative speed and distance, causing low accuracy in collision avoidance systems.
Innovation Solution
Selecting anti-interference parameters based on the orientation of the detection apparatus' field of view using a predefined rule to transmit detection signals, ensuring different orientations use distinct anti-interference parameters, thereby reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If time domain energy detection method or time domain differential detection method is used to suppress interference signals, then interference between radars is reduced, but some real reflected signals are lost and accuracy of relative speed and distance determination is lowered
Solution Approach 1:
The patent applies preliminary action by selecting and configuring the detection signal transmission parameter before the radar operates. Specifically, the system determines an orientation of a field of view and selects a corresponding detection signal transmission parameter based on a predefined rule, which is done in advance before signal transmission occurs. This preliminary configuration prevents interference from occurring in the first place, rather than attempting to suppress interference after it has affected the reflected signals.
Solution Approach 2:
The patent applies parameter changes by varying the detection signal transmission parameter based on the orientation of the field of view. Different orientations correspond to different transmission parameters, which changes the characteristics of the transmitted signals to avoid interference. This parameter variation allows the system to maintain high accuracy in relative speed and distance determination while preventing interference between multiple radars.
2Device complexity
If multiple radars use the same transmit frequency band, then device complexity is reduced and ease of operation is improved, but interference between radars increases severely
Solution Approach 1:
The patent applies local quality by assigning different detection signal transmission parameters to different spatial orientations (fields of view). Instead of using completely different frequency bands for all radars, the system maintains a unified frequency band but introduces local variations through orientation-dependent parameter selection. This creates spatially differentiated signal characteristics that prevent interference while keeping the overall system simple.
Solution Approach 2:
The patent applies dimensionality change by adding an orientation dimension to the signal transmission parameters. Rather than only varying frequency (one dimension), the system incorporates the spatial orientation of the field of view as an additional dimension for parameter selection. This multi-dimensional approach allows multiple radars to operate on the same frequency band while being differentiated by their orientation-based parameters, effectively eliminating interference.
Data Source
AI summary
This application provides example detection signal transmitting methods, detection apparatuses, and storage medium. One example method includes determining an orientation of a field of view of a detection apparatus. One of a plurality of anti-interference parameters can then be selected as a target anti-interference parameter based on the orientation of the field of view of the detection apparatus and according to a predefined rule, where the plurality of anti-interference parameters are determined according to the predefined rule. A detection signal can then be transmitted based on the target anti-interference parameter.