| 摘要 |
<p>PURPOSE: To limit the part to be adjusted to a delay device only so as to adjust signal delay time with high accuracy by directly inputting the output signal of a voltage- controlled oscillator to two receiving systems without chirp modulation simultaneously with the output signal of an oscillator which is also inputted directly to the reception systems without passing through a phase shifter. CONSTITUTION: Output signals from distributed delay lines 8a and 8b appear at a signal output terminal 17 after the signals are delayed in time by means of delay devices 9a and 9b and subjected to phase detection at a phase detector 15 and unnecessary signals are removed through a low-pass filter 16. When the signal delaying time of two super heterodyne receiving systems 10a and 10b are equal to each other, the signals at the terminal 17 become a direct current and, when the devices 9a and 9b are adjusted so that the voltage of the direct current can become the highest, the signal delay time of the systems 10a and 10b become equal to each other and the phase difference between the output signals of the systems 10a and 10b becomes 90 deg.. When a voltage-controlled oscillator 24 is stopped and signals from antennas are inputted to receiving signal inputting terminals 1a and 1b after the adjustment is completed, a radar receiver works as a mono-pulse radar receiver, because the receiver can make mono-pulse angle measurement from the output voltage at the output terminal 17.</p> |
