Influence of Cooperative Self-Defense Coherent Jamming on Mono-Pulse Radar of Dual Stealth Aircraft

In order to rationally evaluate the performance of angle tracking, distance decoy and detection when detecting and tracking the dual stealth aircraft formation under the condition of cooperative self-defense coherent jamming, a model of cooperative self-defense coherent jamming was proposed based on the hovering track of the formation for stealth aircraft. Firstly, by analyzing the real-time attitude, the formation line-of-sight attitude angle was calculated. Then the dynamic RCS (radar cross section) sequence of formation was acquired based on the static dual-aircraft RCS database in the whole airspace. Finally, the instantaneous error and instantaneous detection probability of radar angle of stealth formation in normal flight and cooperative self-defense coherent jamming were compared and studied by using the angle tracking and detection mechanism of mono-pulse radar under the combined action of target echo signal and coherent jamming, and based on the corresponding joint signal-to-interference ratio analysis model. The simulation results show that the formation self-defense coherent jamming can effectively deceive the monopulse radar angle by 0.26 degrees and reduce the radar detection performance by 34.97%, effectively reducing the loss rate during formation voyage.