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:
May. 23, 2024
Lockheed Martin Corporation, Bethesda, MD (US);
Michael Scott Uchida, Highlands Ranch, CO (US);
Babak Mokaberi, Lone Tree, CO (US);
Attiano Purpura-Pontoniere, Hayward, CA (US);
Tarun Bhattacharya, San Jose, CA (US);
Marissa Montano, Bethesda, MD (US);
Jeremy J. Clark, Colorado Springs, CO (US);
Patrick Michael Wolf, San Jose, CA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A method includes receiving, using radio frequency (RF) collectors, RF signals from a target object. The RF signals of target object may be converted to In-phase and Quadrature (I/Q) data. Navigation data of each RF collector may be determined and I/Q data of each of RF collectors are paired. Processing functions may be applied on paired I/Q data. Using paired I/Q data, one or more of time difference of arrival (TDOA) measurement data and frequency difference of arrival (FDOA) measurement data between each pair of the RF collectors are determined. One or more of TDOA measurement data, FDOA measurement data and navigation data of each RF collector are converted to message data. A trajectory of target object may be estimated based on confidence measure of one or more of TDOA and FDOA measurement data. Using estimated trajectory of target object for displaying on a display device of a computing device.