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System for overcoming the effect of electronic countermeasures
System for overcoming the effect of electronic countermeasures
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机译：克服电子对策影响的系统
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摘要
An electronic counter counter-measure (ECCM) system for overcoming the effect of sidelobe repeater or stand off jammer type electronic counter measures (ECM). A primary monopulse type antenna is divided into four quadrants for transmission and reception with the received sum and difference signals being combined in a ferrite modulator. When ECM is detected, the reception pattern is switched so that only the difference signals from the modulator are utilized for the received energy. The power at the receiver in response to only difference signals, relative to the conventional power, allows a threshold to be established to allow blanking of the radar display in a narrow azimuth region about the true azimuth position of the jamming source. The displayed azimuth region that is affected by the jammer, is reduced to only a few degrees on either side of the jammer position.
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