CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based upon and claims the benefit of priority from prior Japanese patent application No. 2019-036666, filed on Feb. 28, 2019, the entire contents of which are incorporated herein by reference.

BACKGROUND

Technical Field

The present invention relates to a radar apparatus and a correction value calculation method.

Related Art

With respect to a radar apparatus or the like, for example, there is a technique for estimating an arrival direction of a reflected wave of a transmitted wave reflected by a target based on a phase difference of the reflected wave. In this type of technique, an azimuth calculation is performed after correcting an electromagnetic coupling component among respective antenna elements from a received signal by signal processing (see, for example, JP-A-2016-003649).

SUMMARY

In the related art, a correction effect on the received signal is not always obtained sufficiently, and there is room for improving accuracy of the azimuth calculation.

The present disclosure has been made in view of the above circumstances and an object thereof is to provide a radar apparatus and a correction value calculation method capable of improving accuracy of an azimuth calculation.

According to an aspect of the present disclosure, there is provided a radar apparatus including: a receiving unit including plural receiving antennas including an antenna element, and configured to receive incoming waves whose arrival directions are known; and a calculating unit configured to calculate a correction value for correcting an error component included in a received signal of the incoming waves received by the receiving unit based on the received signal, the correction value being depending on an azimuth of the antenna element.

According to the present disclosure, the accuracy of the azimuth calculation may be improved.

