US 12,222,440 B2
High-resolution radar target signature smearing correction
Daniel Flores Tapia, Fairfield, CA (US)
Assigned to GM Cruise Holdings LLC, San Francisco, CA (US)
Filed by GM Cruise Holdings LLC, San Francisco, CA (US)
Filed on Dec. 16, 2021, as Appl. No. 17/552,627.
Prior Publication US 2023/0194661 A1, Jun. 22, 2023
Int. Cl. G01S 13/89 (2006.01); G01S 7/40 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/4021 (2013.01) [G01S 13/89 (2013.01); G01S 13/931 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for evaluating received signals, the method comprising:
receiving radar signals reflected off a first object having a relative motion with respect to an antenna of a radar apparatus that points in a first direction, the radar signals including a component that indicates that the first object has a relative motion in a second direction that is different from the first direction where the antenna of the radar apparatus points;
the relative motion resulting in power of the received radar signals being distributed in a first mapping of the radar signals that includes a first number of points;
identifying that the first number of points of the first mapping correspond to a first curve associated with a first parameter;
identifying a compensation factor associated with the first parameter based on the association of the curve with the first parameter;
performing calculations that apply the compensation factor associated with the first parameter to the first mapping of points to generate a second mapping of the radar signals that includes a second number of points, wherein the second number of points is fewer than the first number of points based on the compensation factor being applied in the calculations; and
identifying a distance and velocity to associate with the relative motion based on the second mapping of the radar signals.