Multi-Antenna Radar Detection for In-Vehicle Interference Elimination
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Solution Overview
Problem
Mutual interference between in-vehicle radars is increasing, reducing detection probability and increasing false alarm probability, affecting driving safety and comfort.
Innovation Solution
A radar detection method and apparatus utilizing multiple transmit and receive antennas to process detection information sets, and adjusting transmit parameters to minimize interference by distinguishing echo signals from interference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple in-vehicle radars are deployed for comprehensive detection, then detection coverage and reliability are improved, but mutual interference between radars increases
Solution Approach 1:
The patent segments the detection process by associating each transmit antenna with a specific detection information set. The radar system divides the received signal processing into multiple parallel channels, where each channel processes signals corresponding to a specific transmit antenna. This segmentation allows the system to identify and eliminate interference signals by comparing detection results across different antenna sets, thereby maintaining high detection reliability while reducing mutual interference impact.
Solution Approach 2:
The patent changes the parameter of transmit antenna association by implementing a mapping relationship between transmit antennas and detection information sets. By varying which transmit antenna corresponds to which detection information set, the system can distinguish between echo signals and interference signals from other radars. This parameter change enables interference elimination while preserving the benefits of multiple radar deployments.
2Measurement precision
If traditional signal processing is used without interference elimination, then processing complexity is low, but detection accuracy deteriorates due to interference
Solution Approach 1:
The patent performs preliminary action by pre-establishing the mapping relationship between transmit antennas and detection information sets before signal processing. The system pre-organizes received signals into multiple detection information sets, each associated with a specific transmit antenna. This preliminary organization enables efficient interference identification and elimination during subsequent processing, improving detection accuracy without significantly increasing overall processing complexity.
3Measurement precision
If multiple detection information sets are processed to eliminate interference, then detection accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent extracts and eliminates only the necessary detection information sets for interference removal, rather than processing all possible combinations. By identifying and removing interference signals through the antenna-information set mapping, the system extracts only the essential processing steps needed to improve detection accuracy. This selective extraction approach reduces unnecessary computational energy consumption while maintaining high detection accuracy through effective interference elimination.
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
Effectively eliminates interference between radar detection apparatuses by distinguishing and eliminating interference signals, improving detection accuracy and reducing energy consumption.
Implementation Method 1
The radar transmits a detection signal (electromagnetic wave) outwards by using an antenna and receives a signal reflected by the target object
Implementation Method 2
receives a signal reflected by the target object
Data Source
AI summary
A method for a radar that includes at least two transmit antennas and at least one receive antenna includes receiving at least one signal by using the at least one receive antenna, and then, performing a target detection based on the at least one signal, where the at least one signal corresponds to at least two detection information sets.