US 12,072,440 B2
Identification system for subject or activity identification using range and velocity data
Girish Acharya, Redwood City, CA (US); Douglas Bercow, Menlo Park, CA (US); John Brian Burns, Palo Alto, CA (US); Bradley J. Clymer, Austin, TX (US); Aaron J. Heller, Belmont, CA (US); Jeffrey Lubin, Princeton, NJ (US); Bhaskar Ramamurthy, Los Altos, CA (US); David Watters, Sunnyvale, CA (US); and Aravind Sundaresan, San Jose, CA (US)
Assigned to SRI INTERNATIONAL, Menlo Park, CA (US)
Appl. No. 16/497,968
Filed by SRI International, Menlo Park, CA (US)
PCT Filed Mar. 28, 2018, PCT No. PCT/US2018/024909
§ 371(c)(1), (2) Date Sep. 26, 2019,
PCT Pub. No. WO2018/183546, PCT Pub. Date Oct. 4, 2018.
Claims priority of provisional application 62/477,910, filed on Mar. 28, 2017.
Prior Publication US 2020/0341114 A1, Oct. 29, 2020
Int. Cl. G01S 7/41 (2006.01); G01S 13/58 (2006.01)
CPC G01S 7/415 (2013.01) [G01S 7/412 (2013.01); G01S 7/417 (2013.01); G01S 13/584 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An identification system comprising:
a radar sensor configured to generate a time-domain or frequency-domain signal representative of electromagnetic waves reflected from one or more objects within a three-dimensional space over a period of time; and
a computation engine executing on one or more processors and configured to process the time-domain or frequency-domain signal to generate range and velocity data indicating motion of one or more of a head or an arm of a living subject within the three-dimensional space as two or more two-dimensional range-doppler images,
wherein the computation engine is configured to identify, based at least on the two or more two-dimensional range-doppler images indicating the motion of the one or more of the head or the arm of the living subject and on profile data representative of motions of one or more living subjects, biographical data for the living subject and output an indication of an identity of the living subject.