US 12,313,769 B2
Systems and methods for calibrating a radar system
Shawn Hunt, Bethal Park, PA (US)
Assigned to DENSO International America, Inc., Southfield, MI (US); and DENSO CORPORATION, Kariya (JP)
Filed by DENSO International America, Inc., Southfield, MI (US); and DENSO CORPORATION, Kariya (JP)
Filed on Oct. 7, 2022, as Appl. No. 17/961,706.
Prior Publication US 2024/0118386 A1, Apr. 11, 2024
Int. Cl. G01S 7/40 (2006.01); G01S 13/89 (2006.01)
CPC G01S 7/40 (2013.01) [G01S 13/89 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for calibrating a radar system comprising one or more radar sensors, the method comprising:
defining, for a given calibration iteration from among a plurality of calibration iterations, one or more operational characteristics of the one or more radar sensors;
generating a range-azimuth map based on radar data generated by the one or more radar sensors, wherein:
the radar data is based on the one or more operational characteristics;
the range-azimuth map comprises a plurality of pixels and a plurality of intensity values; and
each pixel from among the plurality of pixels is associated with one intensity value from among the plurality of intensity values;
identifying a reference set of pixels from among the plurality of pixels, wherein the reference set of pixels is associated with a reference object;
determining whether a set of intensity values associated with the reference set of pixels satisfies an intensity condition; and
adjusting the one or more operational characteristics of the one or more radar sensors in response to the set of intensity values not satisfying the intensity condition.