Research on the Influence of Antenna Number and Step Frequency of Optical-Controlled UCFDA on Radar Imaging

In this paper, we propose using optical-controlled uniform circular frequency diverse array (UCFDA) to generate orbital angular momentum (OAM) beams. Simulation experiments are conducted, and impact of parameters of UCFDA on results is also discussed. Results show that the imaging resolution increases when the number of antennas increases, and the valid detecting range increases when the step frequency decreases. By adjusting these two key parameters, UCFDA can realize high-quality imaging and reduce the complexity of radar system. This method may have great potential in radar imaging in the future.