US 12,228,677 B2
Radar data denoising systems and methods
Alessandro Foi, Tampere (FI); and Lucio Azzari, Tampere (FI)
Assigned to TELEDYNE FLIR COMMERCIAL SYSTEMS, INC., Goleta, CA (US); and NOISELESS IMAGING OY LTD., Tampere (FI)
Appl. No. 17/777,000
Filed by Teledyne FLIR Commercial Systems, Inc., Goleta, CA (US); and Noiseless Imaging Oy Ltd., Tampere (FI)
PCT Filed Nov. 25, 2020, PCT No. PCT/US2020/062442
§ 371(c)(1), (2) Date May 13, 2022,
PCT Pub. No. WO2021/108729, PCT Pub. Date Jun. 3, 2021.
Claims priority of provisional application 62/941,595, filed on Nov. 27, 2019.
Prior Publication US 2022/0413092 A1, Dec. 29, 2022
Int. Cl. G01S 7/28 (2006.01); G01S 13/34 (2006.01)
CPC G01S 7/2813 (2013.01) [G01S 13/346 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving radar data;
beamforming the radar data to obtain beamformed radar data associated with a first plurality of channels;
performing a first transform associated with the beamformed radar data to obtain transformed radar data, wherein the transformed radar data is associated with a location parameter and a variance that is independent of the location parameter;
performing a second transform of the transformed radar data to obtain dimensionality-reduced radar data associated with a second plurality of channels, wherein the number of channels in the second plurality of channels is less than the number of channels in the first plurality of channels, and wherein each channel of the first and second plurality of channels is associated with a respective angle; and
filtering, by a multichannel denoising filter, the dimensionality-reduced radar data to obtain denoised dimensionality-reduced radar data.