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:
Sep. 24, 2024
Filed:
Jul. 29, 2022
Applicant:
Nextnav, Llc, Sunnyvale, CA (US);
Inventors:
Michael Dormody, San Jose, CA (US);
Badrinath Nagarajan, South San Francisco, CA (US);
Guiyuan Han, San Jose, CA (US);
Arun Raghupathy, Bangalore, IN;
Assignee:
NextNav, LLC, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/02 (2018.01); G01C 5/00 (2006.01); G01S 19/51 (2010.01);
U.S. Cl.
CPC ...
H04W 4/025 (2013.01); G01C 5/00 (2013.01); G01S 19/51 (2013.01);
Abstract
A method involves determining, at a mobile device or a service, an uncertainty in height above a reference altitude, an estimated 2D position of the mobile device, and an uncertainty in terrain height above the reference altitude using the estimated 2D position. An uncertainty in height above terrain, of the mobile device, is determined at the mobile device or a server using the uncertainty in height above the reference altitude and the uncertainty in terrain height above the reference altitude.