| 摘要 |
<p>PURPOSE:To reduce the time for selecting a disturbance wave suppressing device by discriminating with an auxiliary antenna whether the distrubance wave is one coming from a main lobe or from a side lobe. CONSTITUTION:A signal received by the antenna 11 is mixed with the output of local oscillator 15 by a mixer 13. The auxiliary antenna 12 covers the side lobe level of main antenna. The output of a logarithmic amplifier 20 and output of a logarithmic amplifier 21 are compared by a comparator 22. The disturbance wave, in the case it is a barrage disturbance, is passed through a bandpass filter 26 passing the signal and amplified by a logarithmic amplifier 27 and outputted to a comparator 28. Since the disturbance wave is thus automatically suppressed, the time to attain the selection of disturbance wave suppressing device is saved, and also the most suitable disturbance wave suppressing device can be selected.</p> |
