| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a side lobe canceller which suppresses only the components of an unnecessary signal in the signal components included in a received signal of a main antenna, even when an auxiliary antenna receives clutter having a frequency which is overlaid on that of a target signal. <P>SOLUTION: With reference to a differential signal e(t) of a subtractor 8, the frequency f<SB>s</SB>of the target signal is estimated. The frequency bandwidth including the frequency f<SB>s</SB>is set to the passband of bandpass filters 4, 5. Thereby, even when the auxiliary antenna 2 receives a clutter having a frequency which is overlaid on that of the target signal, only the components of an unnecessary signal in the signal components included in a received signal of the main antenna 1 are suppressed. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
