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. 14, 2025
Filed:
Jul. 27, 2023
Mitsubishi Electric Corporation, Tokyo, JP;
Junia Nomura, Tokyo, JP;
Masaharu Imaki, Tokyo, JP;
Shumpei Kameyama, Tokyo, JP;
Yusuke Ito, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A signal processing device calculates, as a moving speed of each of a plurality of observation targets, a relative speed of each of the targets with respect to a lidar device. A plurality of light pulses having different frequencies from each other are generated, each of the light pulses radiated and then scattered by each of the targets is received, and multiplexed light of each of the scattered light and the laser beam is detected. The signal processing device includes: a Doppler frequency calculating unit to calculate a Doppler frequency in a frequency of each of the scattered light and due to movement of each of the targets from the frequencies of the plurality of generated light pulses and a detection signal of each of the multiplexed light; and a speed calculating unit to calculate a relative speed of each of the targets from each of the Doppler frequency.