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

Claim 0:
1. 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, generate a reception chirp signal, and each perform mixing on a received signal, using the reception chirp signal, the reflected wave being reflected from a target, the direct wave providing direct coupling without passing through the target, 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 the target on the basis of a beat signal resulting from the mixing performed by the receivers, wherein
the signal processor includes a function that detects a level of a direct wave component from the transmitter to the receivers, the direct wave component being included in the beat signal, and determines a failure of the radar device by comparing the detected level with a threshold, the threshold being set on the basis of a beat signal level measurement under an environment that eliminates the reflected wave component in advance.