Interference Signal Processing for Reliable Radar and LiDAR Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Intelligent vehicles equipped with radar and lidar sensors face reliability issues due to interference, leading to potential false alarms or missed detections, which can compromise driving safety and comfort.
Innovation Solution
A signal processing method that identifies and reports interference, such as background light interference, in detection regions, allowing for timely adjustments in detection results and improved reliability evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radar or lidar is used for detection, then distance measurement precision is improved, but reliability deteriorates due to interference such as background light
Solution Approach 1:
The patent applies preliminary action by performing interference detection and evaluation before the detection result is finalized. The processing apparatus evaluates whether interference exists in the detection signal and generates indication information in advance, allowing the detection apparatus to proactively report interference conditions before they compromise the reliability of the detection result.
Solution Approach 2:
The patent implements feedback by creating a closed-loop system where the processing apparatus continuously evaluates detection signals for interference, generates indication information, and feeds this back to the detection apparatus. This feedback mechanism enables real-time monitoring and adjustment, allowing the system to respond to interference conditions and maintain detection reliability.
2Measurement precision
If multi-sensor fusion is performed with high weight given to radar and lidar, then detection accuracy is improved, but security deteriorates due to false alarm signals
Solution Approach 1:
The patent applies feedback by implementing a continuous monitoring system that evaluates detection signals for interference and feeds back indication information to the detection apparatus. This closed-loop feedback enables real-time adjustment of detection results based on interference conditions, preventing false alarms while maintaining detection accuracy.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of indication information that mediates between the raw detection signal and the final detection result. The processing apparatus acts as an intermediary that evaluates interference conditions and provides guidance information, allowing the detection apparatus to adjust its output and avoid security issues caused by false alarms.
3Area of stationary object
If detection is performed in complex interference environments, then detection coverage is improved, but reliability deteriorates due to background light and other interferences
Solution Approach 1:
The patent applies preliminary action by evaluating interference conditions before finalizing detection results in complex environments. The processing apparatus proactively identifies interference in detection signals and generates indication information in advance, allowing the detection apparatus to adjust its operation before reliability is compromised, thus maintaining reliable detection across wide coverage areas.
Solution Approach 2:
The patent implements feedback by creating a monitoring system that continuously evaluates detection signals for interference and feeds back indication information to the detection apparatus. This feedback loop enables the system to maintain reliable detection across extensive coverage areas by real-time adjustment based on interference conditions.
Data Source
AI summary
A signal processing method includes: obtaining a first detection signal corresponding to a first detection region, where the first detection signal includes a noise signal of the first detection region; and outputting indication information based on the first detection signal, where the indication information indicates that interference exists in the first detection region. According to the method, a proactive alarm function is implemented. The indication information indicates interference such that an alarm can be reported in time when interference occurs.