Coherent Dual Point Sources Deceive Semiactive Monopulse Radar Seeker Technology

The technology of coherent dual point sources is used widely in jamming monopulse passive and active radar. The azimuth of enemies´ radar need be measured precisely when coherent dual point source interfere with the semiactive monopulse radar. Analyzing the azimuth value detected by monopulse phase-comparison angle measurement system and the direction value of amplitude-phase distorted area formed by coherent dual point sources, the conclusion were to be drawn that the compensated phase difference of amplitude-phase distorted area formed by coherent dual point sources is the phase difference of disturbed radar which is needed to be measured by coherent dual point sources angle measurement system. Therefore, a microwave amplitude-phase control net was added to the phase-comparison monopulse radar and the angle deception, system against specific direction semiactive monopulse radar was implemented. The phase control requirement of coherent dual point sources was analyzed in detail. Microwave amplitude-phase control net was implemented with precision of 4 degrees. The related technologies are introduced in detail. The geometry model and experiment results are presented. The experiment has shown that the system could interfere with the semiactive monopulse radar effectively