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A variation on the Luneburg lens antenna is the hemispherical Luneburg lens antenna or Luneburg reflector antenna. This uses just one hemisphere of a Luneburg lens, with the cut surface of the sphere resting on a reflecting metal ground plane. The arrangement halves the weight of the lens, and the ground plane provides a convenient means of ...
A corner reflector is a retroreflector consisting of three mutually perpendicular, ... Luneburg lens, for example, are used on the ADM-141 TALD. [4] In optics
The reflector, a type of Luneburg lens, was developed and manufactured by the Institute for Precision Instrument Engineering (IPIE) in Moscow. The mission was interrupted in 2013 after a collision with space debris .
Luneburg lens - A spherical dielectric lens with a stepped or graded index of refraction increasing toward the center. [7] Luneburg lens antennas have several unique features: the focal point, and the feed antenna, is located at the surface of the lens, so it focuses all the radiation from the feed over a wide angle. It can be used with ...
[143] [144] [145] To disguise its RCS, the aircraft can mount four Luneburg lens reflectors. [ 146 ] Noise from the F-35 caused concerns in residential areas near potential bases for the aircraft, and residents near two such bases— Luke Air Force Base , Arizona, and Eglin Air Force Base (AFB), Florida—requested environmental impact studies ...
The early ADM-20 Quail uses a passive corner reflector design to present an RCS similar to the Boeing B-52 Stratofortress. The ADM-141 TALD uses both passive Luneberg lens and active radar enhancers. [2] The later ADM-160 MALD only uses a multi-band active system called signature augmentation subsystem, which allows emulating any desired RCS in ...
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While the F-22's exact RCS is classified, in 2009 Lockheed Martin released information indicating that from certain angles the airplane has an RCS of 0.0001 m 2 or −40 dBsm – equivalent to the radar reflection of a "steel marble"; the aircraft can mount a Luneburg lens reflector to mask its RCS.