Theory and effectiveness analysis of dual-aircraft formation active cancellation slow synchronous blinking jamming

Dual-aircraft formation slow synchronous blinking jamming is standard for jamming monopulse tracking. However, the jamming signal ratio (JSR) of slow synchronous blinking jamming is low and fluctuant in a dynamic jamming scenario, which leads to a poor jamming effect. This study improves the theory of active cancellation slow synchronous blinking jamming (ACBJ) by combining the cancellation stealth technology with slow synchronous blinking jamming to enhance the slow synchronous blinking jamming. We develop a motion model of dual-aircraft formation in the dynamic jamming scenario. In addition, the dynamic radar cross-section for stealth and nonstealth aircraft is simulated separately. The ACBJ theoretical model and its jamming effectiveness are then derived. We also propose the whole process jamming effectiveness (WPJE) index, and a local-global evaluation index is constructed based on WPJE to evaluate jamming effectiveness reasonably. Finally, we designed four experiments to prove that ACBJ can increase the JSR and improve the jamming effect. The WPJE index for nonstealth aircraft formation using ACBJ was 24% higher than that for slow synchronous blinking jamming, and the WPJE index for stealth aircraft formation using ACBJ increased from 98% to 100%.