Monostatic Radar Cross Section Simulation of Small Unmanned Aerial Vehicles in UHF Band

This paper studies the monostatic radar cross section (RCS) simulation of a popular Unmanned Aerial Vehicle (UAV), DJI Phantom 2 Vision Plus in UHF band. The RCS (σ) is evaluated when the plane wave is horizontally and vertically polarized. First, for a constant θ(θ = 90
^°
) and a varying φ(0
^°
≤ φ ≤ 90
^°
), the results show that σhh is higher than the other polarizations, its highest value is found when φ = 0
^°
or φ = 90
^°
, meaning when the excitation is in front of the center of the blades. Second, for constant φ(φ = 0
^°
) and a varying θ(0
^°
≤ θ ≤ 180
^°
), in this case also, σhh is higher than the other polarizations, its values are quite constant around -17dBsm with 2dBsm more when looking from the bottom or from the top (-15dBsm). These results give us an idea about the optimal position of the radar to get the highest value of the RCS of the drone.