| 摘要 |
<p>PROBLEM TO BE SOLVED: To automatically correct a deformation of directivity in vertical plane caused by abnormality in a transmission path or a reception path.SOLUTION: The present invention comprises: transmission system detection means (13-1 to 13-4) for detecting the occurrence of abnormality in each transmission path individually; reception system detection means (23-1 to 23-4) for detecting the occurrence of abnormality in each reception path individually; and control means (30, 40) for changing, when an abnormal transmission path is detected by the transmission system detection means (13-1 to 13-4), the phase and amplitude of a transmission signal in a normal transmission path to correct a deformation of directivity in the vertical plane of a transmission antenna caused by abnormality in the transmission path, and changing, when an abnormal reception path is detected by the reception system detection means (23-1 to 23-4), the phase and amplitude of a reception signal in a normal reception path to correct a deformation of directivity in the vertical plane of a reception antenna caused by abnormality in the reception path.</p> |
