US 12,390,119 B2
Systems and methods for radar-based biometric signal extraction
Babak Mamandipoor, San Jose, CA (US); James T Curran, Cupertino, CA (US); and Joseph Hakim, Soquel, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 3, 2022, as Appl. No. 17/880,306.
Claims priority of provisional application 63/247,130, filed on Sep. 22, 2021.
Prior Publication US 2023/0092386 A1, Mar. 23, 2023
Int. Cl. A61B 5/05 (2021.01); A61B 5/0205 (2006.01); A61B 5/024 (2006.01); A61B 5/08 (2006.01)
CPC A61B 5/05 (2013.01) [A61B 5/0205 (2013.01); A61B 5/02444 (2013.01); A61B 5/0816 (2013.01)] 20 Claims
OG exemplary drawing
 
11. A method comprising:
receiving, by a processor, a plurality of reflections back-scattered from a live target;
determining, by the processor, a first target map comprising a first subplurality of the plurality of reflections associated with a first distance range, azimuth range, elevation range, doppler dimensions range, or any combination thereof of the plurality of reflections;
determining, by the processor, a first biometric time-series data associated with the live target based on a number of the plurality of reflections of the first target map;
determining, by the processor, a second target map comprising a second subplurality of the plurality of reflections associated with a second distance range, azimuth range, elevation range, doppler dimensions range, or any combination thereof of the plurality of reflections;
determining, by the processor, a second biometric time-series data associated with the live target based on a number of the reflections of the second target map; and
fusing, by the processor, the first biometric time-series data and the second biometric time-series data to determine an output biometric time-series data associated with the live target.