US 12,189,021 B2
Radar-based target tracker
Prachi Vaishnav, Unterhaching (DE); Avik Santra, Munich (DE); and Lorenz Ferdinand Wilhelm Weiland, Munich (DE)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Feb. 1, 2022, as Appl. No. 17/590,587.
Claims priority of provisional application 63/150,670, filed on Feb. 18, 2021.
Prior Publication US 2022/0260702 A1, Aug. 18, 2022
Int. Cl. G01S 13/72 (2006.01); G01S 7/41 (2006.01); G01S 13/58 (2006.01)
CPC G01S 13/726 (2013.01) [G01S 7/415 (2013.01); G01S 13/584 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for tracking a target, the method comprising:
receiving raw data from a millimeter-wave radar, the raw data comprising a plurality of macro-Doppler frames, each macro-Doppler frame having N chirps, N being a positive integer greater than 1, wherein each macro-Doppler frame stretches over a time interval having a first duration;
generating micro-Doppler frames from the plurality of macro-Doppler frames, each micro-Doppler frame comprising L chirps from M macro-Doppler frames, M being a positive integer greater than 1, L being a positive integer greater than 1, wherein each micro-Doppler frame stretches over a time interval having a second duration that is longer than the first duration;
detecting one or more moving targets based on the macro-Doppler frames;
detecting one or more static targets based on the micro-Doppler frames;
determining whether a first target of the one or more moving targets detected based on the macro-Doppler frames stops moving; and
tracking the first target using the micro-Doppler frames only after the first target stops moving based on the determining.