Calculation and analysis of electromagnetic scattering by helicopter rotating blades

This paper describes an application of physical optics and the method of equivalent currents to the calculation of radar cross section (RCS) of a helicopter rotor. The problem is treated using a quasi-stationary approach. The calculation can be parameterized as a function of the locations of the rad...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2002-10, Vol.50 (10), p.1396-1408
Main Authors: Pouliguen, P., Lucas, L., Muller, F., Quete, S., Terret, C.
Format: Article
Language:English
Subjects:
Antennas
Blades
Computer programs
Electromagnetic analysis
Electromagnetic scattering
Geometry
Helicopters
Mathematical analysis
Meshing
Near fields
Optical receivers
Optical transmitters
Physical optics
Radar cross section
Rotors
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Summary:This paper describes an application of physical optics and the method of equivalent currents to the calculation of radar cross section (RCS) of a helicopter rotor. The problem is treated using a quasi-stationary approach. The calculation can be parameterized as a function of the locations of the radar transmitter and receiver in relation to the rotor center. Therefore, this offers the possibility of monostatic and bistatic simulations in the far field and near field. Blade geometry is taken into account using a triangular meshing generated by the I-DEAS meshing software. Digital applications are presented and the effects on the RCS spectrum of incidence, frequency, blade number, and the near field are analyzed.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2002.800693