| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a DBF radar device, capable of executing phase correction of each element antenna, without having to use a special device. SOLUTION: This DBF radar device is equipped with a phase correction means. The phase correction means repeatedly carries out phase rotation processing of beat frequency data and DBF composite operation processing, relative to one selected element antenna channel concerning the beat frequency data relative to a detected prescribed target; determines a signal level profile in the scanning direction, in each DBF composite operation processing; calculates a Q-value for showing sharpness of a peak shape appearing in the profile; and corrects phase shift by using the total phase rotation quantity calculated, when the increase rate of the Q-value becomes smaller than a prescribed value, or when the number of times of calculation of the Q-value exceeds a prescribed value as a phase correction value for the selected element antenna channel.</p> |
