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A radar reflector can be made from a Luneburg lens by metallizing parts of its surface. Radiation from a distant radar transmitter is focussed onto the underside of the metallization on the opposite side of the lens; here it is reflected, and focussed back onto the radar station.
The MQM-36 carried Luneburg lens radar enhancement devices in its wingtips that generated a radar signature of a larger aircraft. The radar reflectors (Luneburg lens) wasn't used by the US Navy as the air search radar interfered with the control signals. Thus the air search radar was not used.
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 ...
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 .
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.
During the IOC phase, the fighters are equipped with radar reflectors, also known as the Luneburg lens, to enlarge and conceal the actual radar cross-section. [ 180 ] [ 136 ] The J-20 participated in its first combat exercise in January 2018, practicing beyond-visual-range maneuvers against China's fourth-generation fighters such as J-16 and J-10C.
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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 ...