sensors Article Real-Time Spaceborne Synthetic Aperture Radar Float-Point Imaging System Using Optimized Mapping Methodology and a Multi-Node Parallel Accelerating Technique Bingyi Li 1, Hao Shi 1,2,* ID , Liang Chen 1,*, Wenyue Yu 1, Chen Yang 1 ID , Yizhuang Xie 1, Mingming Bian 3, ...