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The impact of rotor yaw angle on the diffraction loss of a radar beam due to scattering at a 3-blade rotor of a wind turbine (WT) is investigated. Simulation results for a C-band weather radar are based on 2D Fresnel-Kirchhoff diffraction approach considering negligible impact of the ground plane.
This letter aims to show the potential of using polarimetric parameters to distinguish between large birds and unmanned aerial vehicles (UAVs) of comparable size in the context of a modern long-range air defense radar. Time is a critical resource in such systems, and techniques for robust noncooperative target recognition not relying on spatial resolution or long dwell times are highly desired. Furthermore,...
Mitigation of wind turbine (WT) forward scattering for radar and communication systems requires a comprehensive understanding of the impact of diffraction of radio and radar signals at a WT. Investigation of a large variety of diffraction scenarios demands a fast and profound calculation method. Time-variant diffraction loss of the forward scattered signal is calculated using 2D Fresnel-Kirchhoff...
An elementary analysis of X-band SAR images of the flashes from the rotating blades of a hovering helicopter is presented. The analysis is supplemented by simulations based on a physical optics approximation. It is shown that the SAR image consists of a set of ghost images. The ghosts have the form of a dasiacombpsila of periodically repeated point spread functions. Each one corresponds to the point...
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