The invention relates to a millimeter wave radar-based reversing state identification and early warning function switching method, which realizes reversing state identification by processing radar original ADC data, and specifically comprises the following steps: carrying out distance dimension and Doppler dimension FFT processing on radar data to generate an RD map; screening target points through a CFAR algorithm; doppler linear energy distribution is analyzed, the static, reversing or advancing state of the vehicle is judged, the modes of an LCA early warning system and an RCTA early warning system are automatically switched according to the state of the vehicle, the point cloud of an RCTA early warning area is allowed to form a track in advance in the static stage, and the early warning response speed during reversing is increased; the method provided by the invention does not need extra hardware support, so that the system cost is reduced; lossless installation is achieved, and misjudgment is effectively prevented by comprehensively judging the proportion of Doppler clue indexing and static point clouds in the RD map; the vehicle state can be quickly and accurately judged, and the early warning response speed is increased.
本发明涉及一种基于毫米波雷达倒车状态识别与预警功能切换方法,通过处理雷达原始ADC数据实现倒车状态识别,具体步骤包括:对雷达数据进行距离维和多普勒维FFT处理,生成RD图;通过CFAR算法筛选目标点;分析多普勒线能量分布,判断车辆静止、倒车或前进状态,并根据车辆状态自动切换LCA预警和RCTA预警系统的模式,在静止阶段允许RCTA预警区域的点云提前形成航迹,加快倒车时的预警反应速度;本发明提供的方法无需额外硬件支持,降低了系统成本;实现无损安装,并且通过综合判断RD图中的多普勒线索引与静止点云占比,有效防止误判;能够快速准确判断车辆状态,提升了预警响应速度。
Reversing state recognition and early warning function switching method based on millimeter wave radar
一种基于毫米波雷达倒车状态识别与预警功能切换方法
2025-05-30
Patent
Electronic Resource
Chinese
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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