US 11,726,165 B1
Estimation or verification of distance of a target with angle of arrival or angle of departure data
Pedro Henrique Oliveira Santos, Oporto (PT); José Carlos Coelho Alves, Oporto (PT); Márcio Filipe Moutinho Colunas, Oporto (PT); João Paulo Dias Andrade, Oporto (PT); and Virgílio António Ferro Bento, Oporto (PT)
Assigned to SWORD HEALTH, S.A., Oporto (PT)
Filed by SWORD HEALTH, S.A., Oporto (PT)
Filed on Sep. 9, 2022, as Appl. No. 17/941,918.
Claims priority of application No. 22398015 (EP), filed on Jul. 5, 2022.
Int. Cl. G01S 5/02 (2010.01); G01S 5/04 (2006.01); G08B 21/18 (2006.01); G01S 5/08 (2006.01)
CPC G01S 5/0284 (2013.01) [G01S 5/0264 (2020.05); G01S 5/04 (2013.01); G01S 5/08 (2013.01); G08B 21/18 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method comprising:
(a) wirelessly receiving, at a computing device, at least one data packet from a first motion tracking device located on a target and at least one data packet from a second motion tracking device located on the target;
(b) detecting, at the computing device, a first angle of arrival or a first angle of departure of the at least one data packet wirelessly received from the first motion tracking device and a second angle of arrival or a second angle of departure of the at least one data packet wirelessly received from the second motion tracking device;
(c) calculating, at the computing device, at least one angle difference based at least on (i) the first angle of arrival and the second angle of arrival or (ii) the first angle of departure and the second angle of departure;
(d) determining, at the computing device, whether the target is within a threshold distance from the computing device based at least in part on the at least one angle difference and locations of the first motion tracking device and the second motion tracking device; and
(e) outputting an indication of whether the target is within the threshold distance to a user of the computing device.