| 摘要 |
A test beacon for a radar system includes: a first antenna for receiving a search signal and transmitting a processed search signal, a second antenna for receiving a tracking signal and transmitting a processed tracking signal, a first signal processor for shifting the phase of the received search signal and adjusting it to a predetermined level, a third signal processor for shifting the phase of the received tracking signal and adjusting it to a predetermined level, a search/tracking signal delaying unit for receiving the search and tracking signals phase-shifted by the first and third signal processors, delaying the signals for a predetermined time period, and distributing and outputting the delayed signals, a second signal processor for receiving the delayed search signal and filtering a frequency band of the search signal and adjusting the signal to a predetermined level, a fourth signal processor for receiving the delayed tracking signal and filtering a frequency band of the tracking signal and adjusting the signal to a predetermined level, a first circulator for receiving the search signal received by the first antenna and transmitting the received search signal to the first signal processor and for receiving the tracking signal processed by the second signal processor and transmitting the processed tracking signal to the first antenna, and a second circulator for receiving the tracking signal received by the second antenna and transmitting the received search signal to the third signal processor and for receiving the tracking signal processed by the fourth signal processor and transmitting the processed tracking signal to the second antenna. Since the expensive delay line is commonly used for both the search radar and tracking radar beacons, the manufacturing costs can be reduced and a test beacon for a radar system can be made light weight and small.
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