ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,720,479, issued on Aug. 25, was assigned to ZaiNar Inc. (Redwood City, Calif.).
"Method for multiple antenna joint time of arrival and angle of arrival estimation" was invented by Babak Azimi-Sadjadi (Redwood City, Calif.), Philip A. Kratz (Redwood City, Calif.) and Raquel Guerreiro Machado (Redwood City, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "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 betwe...