| 摘要 |
<p>PURPOSE: To obtain a superresolution array(SRA) antenna device by which a plurality of adjacent targets can be separated for both azimuth plane and elevation plane by a method wherein a plurality of SRA processing circuits correct a phase difference due to the distance of the phase center of every subarray regarding the optimum weight of every subarray which is found by a superresolution array processing operation. CONSTITUTION: In an SRA antenna device 1, the aperture plane is divided into subarrays, element outputs of the subarrays are analog-synthesized, the outputs are frequency converted so as to be converted into digital signals, and subarray information on the aperture plane is obtained. Its digital output are synthesized in a row direction, SRA-processed 5, the optimum weight of a direction in an azimuth angle face is found so as to be SRA-processed 5 by using an output synthesized with a column direction, and the optimum weight of a direction in an elevation angle face is found. Then, the row-direction synthesized output and the column-direction synthesized output which have been multiplied by the respective weights are synthesized, and an SRA output in which a porximity target has been dissolved to an azimuth angle face and an elevation angle face is obtained.</p> |
