公开(公告)号：US11977177B2

公开(公告)日：2024-05-07

申请号：US17420781

申请日：2019-12-27

Applicant: XCO Tech Inc.

Inventor： Eric Derbez ,  Scott Stephens

IPC: G01S7/292 ,  G01S7/40

CPC classification number: G01S7/2926 ,  G01S7/4021

Abstract: There is provided a subject location system, including a master processing unit, a receiver, and at least one Tag associated with the subject. The system includes a Hub with a master processing unit and the Tag includes transponders. Range and phase data are used to calculate the position of the Tag in relation to the Hub, and phase cycle errors are eliminated by, the use of a cyclical search minimizing an innovation inner product.

公开(公告)号：US11656315B2

公开(公告)日：2023-05-23

申请号：US15771215

申请日：2016-11-10

Applicant: XCO TECH INC.

Inventor： Scott Stephens ,  Scott Mcmillan ,  Maik Wolleben

IPC: G01S3/50 ,  G01S5/04 ,  G01S5/12 ,  G01S13/02 ,  G01S13/87

CPC classification number: G01S3/50 ,  G01S5/04 ,  G01S5/12 ,  G01S13/0209 ,  G01S13/878

Abstract: A system and method can determine the position of a tag antenna relative to a plurality of spaced apart fixed base antennae using ultrawideband signals by using an angle of arrival determined by time of arrival of an ultrawideband signal from the tag antenna to disambiguate a differential phase angle of arrival measured from the differential phase of the ultrawideband signal between the two base antennae. Accordingly, a non-ambiguous phase angle of arrival of the ultrawideband signal from the tag antenna may be used with a range of the tag antenna measured by one or more methods including by 2-way time of flight, to determine the position of the tag antenna relative to the base antennae. The system and method can also use a plurality of pairs of antennae to determine a 3D position of the tag antenna.

公开(公告)号：US20220113372A1

公开(公告)日：2022-04-14

申请号：US17420781

申请日：2019-12-27

Applicant: XCO Tech Inc.

Inventor： Eric Derbez ,  Scott Stephens

IPC: G01S7/292 ,  G01S7/40

Abstract: There is provided a subject location system, including a master processing unit, a receiver, and at least one Tag associated with the subject. The system includes a Hub with a master processing unit and the Tag includes transponders. Range and phase data are used to calculate the position of the Tag in relation to the Hub, and phase cycle errors are eliminated by, the use of a cyclical search minimizing an innovation inner product.

公开(公告)号：US20200041603A1

公开(公告)日：2020-02-06

申请号：US15771215

申请日：2016-11-10

Applicant: XCO TECH INC.

Inventor： Scott STEPHENS ,  Scott MCMILLAN ,  Maik WOLLEBEN

IPC: G01S3/50 ,  G01S5/12 ,  G01S5/04 ,  G01S13/02 ,  G01S13/87

Abstract: A system and method can determine the position of a tag antenna relative to a plurality of spaced apart fixed base antennae using ultrawideband signals by using an angle of arrival determined by time of arrival of an ultrawideband signal from the tag antenna to disambiguate a differential phase angle of arrival measured from the differential phase of the ultrawideband signal between the two base antennae. Accordingly, a non-ambiguous phase angle of arrival of the ultrawideband signal from the tag antenna may be used with a range of the tag antenna measured by one or more methods including by 2-way time of flight, to determine the position of the tag antenna relative to the base antennae. The system and method can also use a plurality of pairs of antennae to determine a 3D position of the tag antenna.