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:
Oct. 24, 2023
Filed:
Jul. 06, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A positioning device operates in cooperation with a signal receiver for receiving a plurality of signal waves arriving from at least one synchronous transmission unit including a plurality of signal transmitters that operates in synchronization with each other. The positioning device includes: a time-of-arrival detecting unit for detecting time of arrival of each of the plurality of signal waves on the basis of a reception signal output from the signal receiver and a distance difference calculating unit for calculating a difference in distance from the plurality of signal transmitters to the signal receiver as a set of observation values on the basis of a difference in the time of arrival that has been detected; and a positioning arithmetic unit. The positioning arithmetic unit calculates a time series of an estimation state vector indicating position information of the signal receiver by executing a positioning arithmetic operation based on a nonlinear Kalman filter using a time series of an observation vector indicating the set of the observation values and known position information of the plurality of signal transmitters.