| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a secondary surveillance radar apparatus by which a response signal can be decided even in a garble state. SOLUTION: A response signal which is transmitted from an object to be monitored is received by an antenna 1. The received response signal is sent to a receiver 30, it is purified and processed, and it is divided into two systems by a power distributor 8. On the other hand, the phase difference of a constituent pulse signal is detected by a phase detector 1, the magnitude of the detected phase difference and a prescribed value are compared by a phase-difference comparator 13, and the singularity of the object, to be monitored, as the transmitting source of the received response signal is inspected on the basis of a compared result. A response signal without singularity is regarded as a separation signal by a degarble processor 14. The response signal, on the other side, which is passed through a log IF amplification detector 11 and a target detector 15 is output from the degarble processor 14, and it is separated and decoded by using a separation-signal-code decoder 16 so as to be output via a target-data generator 17.</p> |
