| 摘要 |
<p>A method and arrangement for canceling side lobe signals in a direction-finder system, including comparing the phases of a signal from an emitter source received with a first and a second directive search antenna, comparing the amplitude of the signal received with a guard antenna and the amplitude of the signal received with one of the search antennas, said guard antenna having a broad or omni-directional antenna diagram, determining a direction of arrival for the signal from the emitter source based on the phase and amplitude information, and selecting a signal from the emitter source for further processing in the direction-finder system if the direction of arrival lies within a main lobe of the search antennas, and canceling the signal if the direction of arrival lies outside said main lobe.</p> |
