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:
Jan. 04, 2022
Filed:
Mar. 16, 2018
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Akira Kitayama, Hitachinaka, JP;
Hiroshi Kuroda, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
The present invention realizes stable operation of a radar device even if there is radio wave interference between multiple radar devices. A radar deviceis provided with the following: an oscillatorthat generates a modulated signal that has undergone frequency modulation; a transmission unitthat emits a transmission signal that has undergone frequency modulation during a prescribed modulation operation period using the modulated signal generated by the oscillator; a reception unitthat receives a reception signal which is the transmission signal that has been reflected off of an object in the area; and a signal processing unit. The signal processing unitis provided with: an object information calculation unit that calculates information of an object on the basis of the reception signal; an interference state analysis unit that measures a surrounding radio wave interference state, from a prescribed minimum frequency Fmin to a maximum frequency Fmax, during a search modulation operation period that does not overlap the modulation operation period; and a band selection unit that selects a frequency band of the transmission signal on the basis of the radio wave interference state measured by the interference state analysis unit.