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:
Apr. 21, 2026
Filed:
Oct. 06, 2023
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 5/02 (2010.01); G01C 5/00 (2006.01); G01S 13/42 (2006.01); G05D 1/00 (2024.01); H04B 17/318 (2015.01);
U.S. Cl.
CPC ...
G01S 5/02585 (2020.05); G01C 5/005 (2013.01); G01S 13/42 (2013.01); G05D 1/0202 (2013.01); H04B 17/318 (2015.01);
Abstract
Provided is an altitude calculation method for a flying body including calculating an altitude of the flying body by using information on horizontal coordinates of the flying body, a reception signal strength of a radio signal, and altitude calculation auxiliary information obtained in advance.