US 12,436,233 B2
Radar interference detection
Jeroen Overdevest, Eindhoven (NL); and Francesco Laghezza, Eindhoven (NL)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Dec. 14, 2022, as Appl. No. 18/081,169.
Claims priority of application No. 22155994 (EP), filed on Feb. 9, 2022.
Prior Publication US 2023/0251348 A1, Aug. 10, 2023
Int. Cl. G01S 7/35 (2006.01); G01S 7/02 (2006.01)
CPC G01S 7/354 (2013.01) [G01S 7/023 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A data processing device for detecting interference in frequency modulated continuous wave, FMCW, radar signals received by a radar receiver of a radar system, wherein the data processing device is configured to:
obtain a plurality of samples forming a beat signal;
determine a magnitude of each sample;
group the plurality of samples into a plurality of subsets wherein each subset corresponds to a given time segment of the beat signal;
determine a maximum magnitude of each subset;
extract an nth lowest maximum magnitude of the plurality of subsets to determine an adaptive threshold;
apply the adaptive threshold to each sample of the plurality of samples to generate a mask, wherein if the magnitude of a sample is higher than the adaptive threshold the mask has a first value for that sample and if the magnitude of the sample is lower than the adaptive threshold the mask has a second value for that sample; and
apply the mask to the beat signal to remove any samples detected as comprising interference,
wherein the first value is indicative of a sample comprising interference and the second value is indicative of a sample without interference.