Collaborative Radar Resource Listening for Interference-Aware Detection
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Solution Overview
Problem
The increasing density of vehicles leads to insufficient available time-frequency resources and significant interference between radar systems, reducing detection reliability and increasing false alarms, posing a safety risk.
Innovation Solution
Adaptive adjustment of time-frequency occupation ratio and transmit power of detection signals based on listening results to reduce interference, using diverse waveforms and selecting optimal time-frequency resources for detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar systems use fixed time-frequency occupation ratio and transmit power for target detection, then detection capability is maintained, but interference between radar systems increases and time-frequency resources are wasted
Solution Approach 1:
The patent implements dynamic adjustment of time-frequency occupation ratio and transmit power based on real-time listening results. The radar system continuously monitors channel congestion and adapts its transmission parameters accordingly, transitioning from fixed to dynamic control to reduce interference while maintaining detection capability.
Solution Approach 2:
The patent changes the parameters of time-frequency occupation ratio and transmit power based on channel conditions. By listening to the channel first and then adjusting these parameters dynamically, the system optimizes resource usage and reduces interference with other radar systems while maintaining reliable target detection.
2Measurement precision
If radar systems increase transmit power to improve detection accuracy, then detection precision improves, but interference with other radar systems increases
Solution Approach 1:
The patent dynamically adjusts transmit power based on channel congestion levels determined through listening. When the channel is less congested, higher transmit power can be used to improve detection accuracy. When congestion is high, transmit power is reduced to minimize interference, thus adapting detection precision to actual channel conditions.
Solution Approach 2:
The patent implements a feedback mechanism where the radar system listens to the channel, evaluates congestion levels, and adjusts transmit power accordingly. This closed-loop control ensures that transmit power is optimized for detection accuracy while minimizing interference to other systems based on real-time channel feedback.
3Object-generated harmful factors
If radar systems reduce time-frequency occupation ratio to reduce interference, then interference between radar systems decreases, but detection capability is reduced
Solution Approach 1:
The patent dynamically adjusts time-frequency occupation ratio based on channel listening results. When the channel is congested, the ratio is reduced to minimize interference. When the channel is less congested, the ratio is increased to maintain or improve detection capability, thus adapting to real-time channel conditions.
Solution Approach 2:
The patent changes the time-frequency occupation ratio parameter dynamically based on channel conditions. By listening first and then adjusting this parameter, the system ensures that detection capability is maintained when resources are available while reducing interference when the channel is congested.
4Productivity
If more vehicles are deployed to meet increasing demand, then service coverage improves, but mutual interference between radar systems increases
Solution Approach 1:
The patent enables each radar system to dynamically adjust its time-frequency occupation ratio and transmit power based on channel conditions. This allows more vehicles to be deployed to improve service coverage while each system adapts its parameters to minimize mutual interference, thus scaling the system without proportionally increasing interference.
Solution Approach 2:
The patent implements channel listening and feedback mechanisms that allow radar systems to detect and adapt to interference from other systems. This enables scalable deployment of multiple vehicles where each system can sense the channel environment and adjust its transmission parameters to coexist with other systems, maintaining service coverage while managing mutual interference.
Data Source
AI summary
A resource determining method and apparatus, an electronic device, a storage medium, a program product, and a vehicle are provided, which are relate to interference listening and avoidance technologies of collaborative radars, and include: determining a first listening result of a first time-frequency resource set; when the first listening result meets a first congestion condition, reducing a time-frequency occupation ratio and/or transmit power of a first target detection signal to obtain a second target detection signal, wherein the first congestion condition includes: a congestion degree of any time-frequency resource in a second time-frequency resource set is greater than a first threshold, and the second time-frequency resource set is included in the first time-frequency resource set; and detecting a target based on the second target detection signal.