AI RESEARCH
4DRaL: Bridging 4D Radar with LiDAR for Place Recognition using Knowledge Distillation
arXiv CS.CV
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ArXi:2603.26206v1 Announce Type: new Place recognition is crucial for loop closure detection and global localization in robotics. Although mainstream algorithms typically rely on cameras and LiDAR, these sensors are susceptible to adverse weather conditions. Fortunately, the recently developed 4D millimeter-wave radar (4D radar) offers a promising solution for all-weather place recognition. However, the inherent noise and sparsity in 4D radar data significantly limit its performance.