Adaptive Radar Signal Patterns for Vehicle Interference Mitigation
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Solution Overview
Problem
Vehicle radar sensors experience performance degradation due to interference from other radar signals, leading to false target detection and jammed return paths, particularly in densely populated areas with high traffic density.
Innovation Solution
A method and apparatus for collaborative selection of radar signal transmission parameters based on in-band and out-of-band communications from other radar devices, allowing a device to receive and select a different radar signal pattern parameter set to minimize interference, thereby reducing radar sensor performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar sensors transmit signals in densely populated areas, then radar detection capability is maintained, but interference from other radar signals increases causing false target detection and performance degradation
Solution Approach 1:
The radar system dynamically adjusts its signal pattern parameters (such as frequency, chirp rate, duty cycle) based on real-time detection of other radar signals in the environment. This dynamic adaptation allows the radar to maintain reliable detection capability while avoiding interference by changing its transmission characteristics in response to environmental conditions.
Solution Approach 2:
The invention changes physical parameters of the radar signal pattern, including frequency, bandwidth, chirp rate, and duty cycle, to avoid interference from other radar signals. By modifying these parameters, the radar system can operate reliably in dense environments where multiple radar signals are present, preventing false target detection.
2Ease of operation
If radar signal transmission parameters are standardized across all devices, then ease of operation is improved, but radar sensor performance degradation occurs due to signal interference
Solution Approach 1:
While maintaining standardized operational interfaces and control mechanisms for ease of use, the system dynamically changes signal pattern parameters such as frequency, bandwidth, and chirp rate based on detected environmental radar signals. This allows the radar to maintain both ease of operation and detection accuracy by automatically adapting parameters without requiring complex user intervention.
3Device complexity
If radar devices use fixed signal patterns, then device complexity is reduced, but false target detection increases in high traffic density areas
Solution Approach 1:
The radar system transitions from fixed signal patterns to dynamic, adaptive signal patterns that change based on environmental conditions. The system detects other radar signals and adjusts its own signal pattern parameters in real-time, maintaining low operational complexity while significantly improving target detection accuracy in dense environments.
Solution Approach 2:
The radar system performs self-adjustment of its signal pattern parameters by automatically detecting the presence and characteristics of other radar signals and modifying its own transmission accordingly. This self-service capability eliminates the need for complex external control systems while improving detection precision through adaptive parameter selection.
Data Source
AI summary
In some aspects, a device may receive a communication indicating a first radar signal pattern parameter set associated with another device. The device may select, based at least in part receiving the communication indicating the first radar signal pattern parameter set, a second radar signal pattern parameter set that is different from the first radar signal pattern parameter set. The device may transmit a radar signal using the second radar signal pattern parameter set. Numerous other aspects are provided.