4.6 Article

Investigation of Radar Cross-Section Reduction for Dihedral Corner Reflectors Based on Camouflage Grass

期刊

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 20, 期 12, 页码 2447-2451

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2021.3114302

关键词

Loading; Electromagnetic scattering; Radar cross-sections; Load modeling; Surface waves; Radar scattering; Electric fields; Camouflage grass; dihedral corner reflector; multiple scattering; radar cross-section (RCS) reduction

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This study investigates the reduction effect of radar cross-section (RCS) for a right-angle dihedral corner reflector by discussing different loading conditions of camouflage grass. The results show that the loading of camouflage grass can significantly reduce the RCS of the corner reflector without altering the target structure or using absorbing materials.
The investigation of how to control themicrowave scattering from strong scattering sources has vital applications in military and civilian areas. As a typical target, a right-angle dihedral corner reflector has been extensively investigated because of its strong electromagnetic scattering over a wide observation angle range. In this letter, a right-angle dihedral corner reflector with three loading conditions of the camouflage grass described in our previous investigation is discussed to investigate the radar cross-section (RCS) reduction effect for the typical target. For different RCS reduction effects of the camouflage grass loading conditions, which include paste, cover, and shield, the calculated results and the measurement results are presented and compared. The loading of camouflage grass greatly reduces the RCS of the corner reflector over a wide-angle range at 10 GHz and a broad band from 4 to 18 GHz. The paste loading condition of camouflage grass achieves the best RCS reduction effect. Then, the difference in the monostatic RCS curves is analyzed and explained by multiple scattering effects. The advantages of employing camouflage grass lie in its ability to clearly reduce the RCS of the dihedral corner reflector without having to shape the target structure or use absorbing materials. This approach can be broadly applied to composite scattering studies and the RCS reduction of targets.

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