US 11,835,642 B2
Flying apparatus for calibrating a radar system
Christian Krawinkel, Markt Schwaben (DE)
Assigned to Rohde & Schwarz GmbH & Co. KG, Munich (DE)
Filed by Rohde & Schwarz GmbH & Co. KG, Munich (DE)
Filed on Jun. 19, 2020, as Appl. No. 16/906,039.
Prior Publication US 2021/0396841 A1, Dec. 23, 2021
Int. Cl. G01S 7/40 (2006.01); B64C 39/02 (2023.01); H01Q 15/14 (2006.01); B64D 47/00 (2006.01); B64U 10/13 (2023.01); B64U 101/00 (2023.01)
CPC G01S 7/40 (2013.01) [B64C 39/024 (2013.01); B64D 47/00 (2013.01); H01Q 15/14 (2013.01); B64U 10/13 (2023.01); B64U 2101/00 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A flying apparatus for calibrating a radar system, comprising:
a base body, wherein the base body comprises:
a radar reflective structure, wherein at least one part of the radar reflective structure is movably mounted to the base body, and wherein the at least one part can be moved actively or passively,
wherein the at least one part of the radar reflective structure is rotatably mounted to the base body,
wherein a rotation axis of the at least one part of the reflective structure is identical to at least one rotor axis, wherein the rotation axis of the at least one part of the reflective structure passes through the center of gravity of the flying apparatus,
wherein the radar reflective structure comprises reflective and non-reflective elements, and
wherein the reflective and non-reflective elements are arranged on a surface, and
wherein by rotating the surface, Doppler signals with certain frequencies are generated in the reflected radar signals, wherein the generated frequencies depend on the speed and the arrangement of the reflective and non-reflective elements.