US 12,287,424 B2
Radar sensing system and method thereof
Ching Han Tsai, Hsinchu County (TW); Hsiao-Ning Wang, Hsinchu County (TW); and Chung-Chin Jian, Hsinchu County (TW)
Assigned to CUBTEK INC., Hsinchu County (TW)
Filed by CUBTEK INC., Hsinchu County (TW)
Filed on May 19, 2022, as Appl. No. 17/664,049.
Claims priority of provisional application 63/193,075, filed on May 26, 2021.
Claims priority of application No. 111107935 (TW), filed on Mar. 4, 2022.
Prior Publication US 2022/0381879 A1, Dec. 1, 2022
Int. Cl. G01S 7/40 (2006.01); G01S 7/02 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/40 (2013.01) [G01S 7/027 (2021.05); G01S 13/931 (2013.01)] 14 Claims
OG exemplary drawing
 
5. A radar sensing system, for being disposed on a vehicle and comprising:
a sensing unit comprising a receiving antenna array, which comprises at least three receiving antennas, wherein the receiving antennas are arranged on an antenna plane and have a receiving antenna center, the receiving antennas are arranged symmetrically with respect to the receiving antenna center, there is a receiving antenna spacing between each adjacent two of the receiving antennas, and the receiving antenna spacings are equal;
a housing comprising a bottom surface, which is attached on an outer surface of the vehicle, wherein the sensing unit is disposed in the housing, an antenna plane angle between the antenna plane and the outer surface of the vehicle is in a range of 0 degrees to 90 degrees, and a vertical distance between the receiving antenna center and the bottom surface is smaller than or equal to 2 cm; and
at least one blocking unit disposed on the outer surface of the vehicle for blocking a reflected signal of a mirror target, which is virtual, wherein an average surface roughness of the at least one blocking unit is smaller than 5 cm;
wherein the sensing unit is for sensing an actual target, and a distance along a lateral direction of the vehicle between the receiving antenna center and the actual target is in a range of 1 m to 5 m.