US 9,810,784 B2
System and method for object position estimation based on ultrasonic reflected signals
Nathan Altman, RaAnana (IL); Yossef Tsfaty, Rishon-LeZion (IL); and Meir Agassy, Ramat-Gan (IL)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 13/885,677
Filed by Nathan Altman, RaAnana (IL); Yossef Tsfaty, Rishon-LeZion (IL); and Meir Agassy, Ramat-Gan (IL)
PCT Filed Nov. 16, 2011, PCT No. PCT/IL2011/000884
§ 371(c)(1), (2), (4) Date Jul. 19, 2013,
PCT Pub. No. WO2012/066541, PCT Pub. Date May 24, 2012.
Claims priority of provisional application 61/414,004, filed on Nov. 16, 2010.
Prior Publication US 2013/0301391 A1, Nov. 14, 2013
Int. Cl. G01S 15/00 (2006.01); G01S 15/08 (2006.01); G01S 13/00 (2006.01); G01S 13/32 (2006.01); G01S 15/32 (2006.01)
CPC G01S 15/08 (2013.01) [G01S 13/003 (2013.01); G01S 13/32 (2013.01); G01S 15/003 (2013.01); G01S 15/32 (2013.01)] 45 Claims
OG exemplary drawing
 
1. A system for small space positioning comprising:
a transmitting element at a fixed and known location, configured for transmitting a modulated continuous ultrasonic wave, wherein the modulated continuous ultrasonic wave comprises a continuous ultrasonic carrier signal part and a predetermined ultrasonic base-band signal modulated onto said carrier signal part, the transmitting element being configured to transmit said modulated continuous ultrasonic wave over a range in which an object to be positioned may appear;
a receiving element configured for receiving one or more signals transmitted by the transmitting element and reflected by the object, said received one or more signals comprising said modulated continuous ultrasonic wave; and
a position detection element configured to determine a position of the object from analysis of both the carrier signal part and the base-band signal in the received one or more signals, wherein the analysis of both the carrier signal part and the base-band signal includes phase analysis.