Boyuan Zheng Shouyi Lu Renbo Huang Minqing Huang Fan Lu Wei Tian 0001 Guirong Zhuo Lu Xiong 0001 R2LDM: An Efficient 4D Radar Super-Resolution Framework Leveraging Diffusion Model. 769-776 2025 IROS https://doi.org/10.1109/IROS60139.2025.11246739 conf/iros/2025 db/conf/iros/iros2025.html#ZhengLHHLTZX25 streams/conf/iros