Title :
Analysis of electromagnetic scattering by a rotating rotor with flat blades
Author :
Sun, Young-Seek ; Myung, Noh-Hoon
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
The problem of amplitude and frequency modulated waveforms of an electromagnetic wave due to the scattering by a slowly rotating rotor with metal plate(s) is investigated in this study. Equivalent current method (ECM) together with geometrical theory of diffraction (GTD) is used to analyze the modulated waveforms. The modulated waveforms depend on the orientation and dimension of the object, its rotation speed, and very strongly on the incident and scattering directions. Numerical results based on our ECM are presented and compared with those of Sikta´s (1983) and physical optics (PO) solution
Keywords :
amplitude modulation; backscatter; electric current; frequency modulation; geometrical theory of diffraction; radar cross-sections; rotating bodies; rotors; GTD; amplitude modulated waveforms; backscattered field; electromagnetic scattering; electromagnetic wave; equivalent current method; flat blades; frequency modulated waveforms; geometrical theory of diffraction; incident directions; metal plates; numerical results; object dimension; object orientation; physical optics; radar returns; rotating rotor; rotation speed; scattering directions; Blades; Electrochemical machining; Electromagnetic analysis; Electromagnetic scattering; Electronic countermeasures; Frequency; Optical diffraction; Optical scattering; Radar scattering; Sun;
Conference_Titel :
Singapore ICCS '94. Conference Proceedings.
Print_ISBN :
0-7803-2046-8
DOI :
10.1109/ICCS.1994.474244
