US 11,808,881 B2
Apparatus and method of two-stage signal processing in a radar system
Noam Arkind, Givatayim (IL); Ben Rathaus, Kadima (IL); Tom Altus, Raanana (IL); and Yoram Stettiner, Keren Maharal (IL)
Assigned to Arbe Robotics Ltd.
Appl. No. 17/261,076
Filed by ARBE ROBOTICS LTD., Tel Aviv (IL)
PCT Filed Jun. 29, 2019, PCT No. PCT/IL2019/050719
§ 371(c)(1), (2) Date Jan. 18, 2021,
PCT Pub. No. WO2020/016877, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 260694 (IL), filed on Jul. 19, 2018.
Prior Publication US 2021/0318413 A1, Oct. 14, 2021
Int. Cl. G01S 7/35 (2006.01); G01S 13/536 (2006.01); G01S 13/58 (2006.01); G01S 13/931 (2020.01); G01S 13/02 (2006.01)
CPC G01S 7/352 (2013.01) [G01S 13/536 (2013.01); G01S 13/584 (2013.01); G01S 13/931 (2013.01); G01S 2013/0245 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method of processing received data in a radar system, the method comprising:
performing said data processing using two different frames, including a short low resolution coarse frame and a longer high resolution fine frame that are transmitted consecutively;
receiving, in a radar processing circuit, coarse radar return data from transmitted coarse frames, performing range processing on each coarse frame on the fly while each coarse frame is transmitted, and processing said coarse radar return data received at a low resolution to extract one or more targets of interest (TOIs) having energy above a threshold; and
receiving, in said radar processing circuit, fine radar return data from transmitted fine frames, performing range processing on each fine frame on the fly while each fine frame is transmitted, and processing said fine radar return data at high resolution only for said plurality of TOIs, and not for the entire full fine frame whereby all non-TOI data is ignored, in order to determine Doppler, azimuth, and elevation information for generating 4D radar output image data, thereby reducing processing time and compute resources required to generate said 4D radar output image data.