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:
Aug. 25, 2026
Filed:
Mar. 21, 2025
Zainar, Inc., Redwood City, CA (US);
Babak Azimi-Sadjadi, Redwood City, CA (US);
Philip A. Kratz, Redwood City, CA (US);
Raquel Guerreiro Machado, Redwood City, CA (US);
ZaiNar, Inc., Redwood City, CA (US);
Abstract
A method includes: accessing a ranging signal transmitted from a transmitter and received at a set of antenna elements via a channel; recording time domain samples representing the ranging signal; accessing steering matrices characterized by a time delay grid, a phase angle grid, and distances between antenna elements and a reference antenna element; generating a structured data representation of the time domain samples characterized by the steering matrices; calculating a sparse representation of the channel by executing L1-norm regularization based on the structured data representation; and calculating a time of arrival estimate and an angle of arrival estimate for the ranging signal based on the sparse representation of the channel.