| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably suppress the received echo from a fixed target without depending on the moving speed of a loading airplane as PRI(repeat period) is fixed, and surely judge the received echo of the moving target. SOLUTION: Received echoes captured by antenna elements T1-Tn are inputted to a central opening composer 35C through phase transfer equipments 331-33n, circulators 321-32n, and RF distributors 341-34n, the distributed output of RF distributors 341-34k and the distributed output of the RF distributors 34j-34n are inputted to a left opening composer 35L and a right opening composer 35R, respectively, and the composed outputs of each composer 35C, 35L, 35R are received and detected by receivers 36C, 36L, 36R, and regulated in amplitude phase by amplitude phase regulating circuits 37C, 37L, 37R, the received signal of the central opening system is added to each received signal of the left and right opening systems by a distributor 38, and adders 39L, 39R, the echo component from a fixed target is removed by DPCA processing of a DPCA processor 40, and the result is displayed on a moving target display device 41.</p> |
