US 12,386,032 B2
Methods and systems for using interference to detect sensor impairment
Adam Brown, Mountain View, CA (US); and Gary Clayton, Torrance, CA (US)
Assigned to Waymo LLC, Mountain View, CA (US)
Filed by Waymo LLC, Mountain View, CA (US)
Filed on Aug. 30, 2022, as Appl. No. 17/823,327.
Prior Publication US 2024/0069157 A1, Feb. 29, 2024
Int. Cl. G01S 7/40 (2006.01); G01S 13/931 (2020.01); H04W 4/02 (2018.01); B60W 60/00 (2020.01)
CPC G01S 7/40 (2013.01) [G01S 7/4039 (2021.05); G01S 13/931 (2013.01); H04W 4/023 (2013.01); B60W 60/001 (2020.02); B60W 2420/408 (2024.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, at a computing device and from a radar coupled to a vehicle, radio-frequency (RF) signals propagating in an environment of the vehicle;
determining a distance and an angle to a source of the RF signals, wherein the source of the RF signals is a vehicle radar system used by a second vehicle operating in the environment of the vehicle;
performing a comparison between a power level of the RF signals and a power level threshold, wherein the power level threshold depends on the distance and the angle to the source of the RF signals;
based on the comparison indicating the power level of the RF signals is below the power level threshold, decreasing a confidence assigned to the radar coupled to the vehicle; and
controlling, by the computing device, the vehicle according to a strategy generated based on the decreased confidence assigned to the radar.