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:
Dec. 15, 1987
Filed:
Jan. 29, 1985
Hitachi, Ltd., Tokyo, JP;
Abstract
A method of localizing a moving body, by which the magnitude of parameters, which can give rise to bias errors, is estimated inversely from the difference between two locations of the moving body estimated by two different localization methods. Various quantities (position of sensors, propagation velocity of radiation, etc.), on the basis of which localization operations are carried out, can be corrected by using the magnitude thus estimated. The emission time of the radiation from the moving body can be estimated by the hyperbolic surface localization method and the spherical surface localization method can utilize the emission time thus estimated to localize the moving body. Further, localization errors caused by both localization methods can be estimated, so that it is possible to determine which localization method should be used to localize the moving body.