A Study of Relation between Rotor Propeller Position and Radar Cross Section Based on FEKO

The purpose of this study is to analyze the variation of radar scattering cross-section (RCS) of UAVs, specifically focusing on the impact of propeller positions, polarizations, and frequencies. Models of UAVs with different propeller positions were constructed, and simulations were conducted using FEKO. Through the analysis of RCS, the following conclusions were drawn: Frequency has a significant impact on RCS, especially at 500MHz, and the trend of RCS increase and decrease of UAVs with different propeller positions remains stable. Changes in propeller positions and polarization directions lead to differences in RCS, and the relationship is nonlinear. The changes in RCS at 2GHz and 5GHz frequencies are more complex, but consistent trends can still be observed at specific locations and frequencies. The variations in maximum RCS and observation view are inconsistent, indicating that radar scattering behavior is affected by multiple factors. These results have important implications for the design and optimization of unmanned aerial systems and contribute to our understanding of electromagnetic wave interactions.