The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2022
Filed:
Jun. 03, 2020
Zhejiang University, Hangzhou, CN;
Junfeng Wu, Hangzhou, CN;
Jiming Chen, Hangzhou, CN;
Jieqiang Wei, Täby, SE;
Guangyang Zeng, Hangzhou, CN;
Zhejiang University, Hangzhou, CN;
Abstract
In a general aspect, a target is localized based on measurements from a measurement device array. In some aspects, range difference values (d) and coordinate vectors () of devices in the measurement device array are obtained. The range difference values are generated based on time difference of arrival measurements of wireless signals between the target device and each of the devices in the measurement device array. A first matrix (A) and a first vector (b) are constructed. The first matrix (A) and the first vector (b) each includes the range difference values and the coordinate vectors. Whether a second vector (y) satisfies a condition set is determined. The condition set includes a first condition (AA+λD)y=Ab and a second condition v(AA+λD)v≥0. A numerical approximation of an optimal solution of the second vector is generated. The target device is localized according to the numerical approximation of the optimal solution.