Patent ID: 11921186
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A radar device for detecting a target, the radar device comprising:
at least one transmitter to generate a transmission chirp signal synchronized with a timing signal;
at least two receivers to each receive a reflected wave and a direct wave of the transmission chirp signal emitted from the transmitter, each generates a reception chirp signal, and each performs mixing on a received signal, using a reception chirp signal, the reception chirp signal being synchronized with the timing signal and having the same slope as the transmission chirp signal; and
a signal processor to detect a target on the basis of a beat signal resulting from the mixing performed by the receivers, wherein
the signal processor determines presence or absence of a failure of the radar device on the basis of a threshold, the threshold being set from a difference between a level of a direct wave component in the beat signal in a state of no frequency modulation, and a level of the direct wave component in the beat signal in a state of frequency modulation.