Weijie Chen Bin Liao Joint Trajectory and Antenna Position Optimization for UAV-DFRC Systems with Movable Antenna. 1-5 2025 SiPS https://doi.org/10.1109/SiPS66314.2025.11261286 conf/sips/2025 db/conf/sips/sips2025.html#ChenL25 streams/conf/sips