Computations of Radar Returns of Wind Turbines

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 5Language: englishTyp: PDF

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Lil, Emmanuel Van; Trappeniers, Dave; Bleser, Jan-Willem De; Capelle, Antoine Van de (Dept. of Electrical Engineering, div. ESAT-TELEMIC, K. U. Leuven, Kasteelpark Arenberg, 10 Bus 2444, 3001 Heverlee-Leuven, Belgium)

Up to now, all previous studies have focused on the influence of moving objects such as wind turbines on aeronautical and maritime radars that normally operate in the L/S band or in the X-band respectively. We have used both UTD methods as well as simplified methods to quantize the effects. Not many moment method solvers are capable of dealing with moving objects (creating Doppler shifts) in a fully consistent way, but with UTD it is within easy reach of the modern computers. However, for some particular applications, the procedures can be simplified to quantize efficiently the near-fields around moving objects. After a description of the general phenomena, two simplified methods will be compared. The first consists in a Physical Optics based method and the second makes use of the flat wedge approximation.