Title :
Surface wave scattering on a drone air vehicle
Author :
Benson, M. ; Hilliard, D. ; Mensa, D. ; Oh, K. ; To, L. ; Yates, W.
Author_Institution :
US Naval Air Warfare Center-Weapons Div., Point Mugu, CA, USA
fDate :
June 28 1993-July 2 1993
Abstract :
Recent radar-cross-section (RCS) measurements on a generic drone air vehicle conducted at 34 GHz revealed a strong surface-wave scattering mechanism associated with the shadowed side, in contrast with expectations. Two-dimensional inverse synthetic aperture radar (ISAR) images illustrating the scattering features are presented with the objective of documenting the experimental results. The measurements were conducted over a frequency band of 3.175 GHz centered on 34 GHz, and the RF sweeps were transmitted for every 0.04/spl deg/ of vehicle rotation. The wideband data were calibrated and gated about the vehicle and ISAR images were produced using a two-dimensional Fourier transform over frequency and aspect angle subsequent to resampling the polar formatted data. The total rotation angle involved in producing each image is 5.12/spl deg/.<>
Keywords :
Fourier transform optics; aircraft; electromagnetic wave scattering; inverse problems; radar cross-sections; surface electromagnetic waves; synthetic aperture radar; 34 GHz; EHF; ISAR images; RCS; RF sweeps; drone air vehicle; inverse synthetic aperture radar; radar-cross-section; strong surface-wave scattering mechanism; two-dimensional Fourier transform; vehicle rotation; Azimuth; Couplings; Instruments; Nose; Polarization; Radar cross section; Radar scattering; Radio frequency; Surface waves; Vehicles;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385455
