Abstract
In view of the many scenes of unmanned aerial vehicle (UAV) detection, a third-party signal source is used to design a receiver to monitor the UAV. It is of great significance to understand the reflection of the signal illuminating the UAV. Taking the communication base station (BS) signal as the third-party signal source, and considering the complete transmission link, reflection changes and loss fading of the communication signal, this study conducts model fitting for irregular UAV targets, simplifying complex targets into a combination of simple targets. Furthermore, the influence of the dielectric constant of the target surface and the signal irradiation angle on the signal reflection is analyzed. The analysis shows that the simulation results of this model fitting method are consistent with the results of other literature, which provides theoretical support for the detection of low and slow small targets such as UAVs.
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