雷达/红外双模导引头抗红外诱饵干扰

Technology of Radar/IR dual-mode seeker against infrared decoy jamming

红外诱饵干扰弹是常见的影响导弹命中精度的干扰手段之一,对雷达/红外双模导引头抗红外诱饵干扰弹进行研究具有重要的理论价值和工程应用价值。在对红外诱饵干扰原理研究的基础上对系统进行建模,通过计算能量质心位置建立了雷达/红外双模状态方程和量测方程;设计了一种抗干扰方法,提出一种通过辐射能量和角度偏差方程进行红外诱饵干扰检测的方法。仿真分析表明:雷达/红外双模导引头使用该抗干扰方法能够以超过90%概率检测红外诱饵干扰,跟踪精度高,脱靶量小,验证了方法的可行性。

Infrared decoy is one of the common applicable measures to decrease the hit precision of missile. The research of Radar/IR dual-mode seeker against infrared decoy jamming had important theoretical and engineering application value. System models were established based on the research on the principle of infrared decoy jamming. And state equation and measure equation were built by computing the position of power centroid. A kind of method against infrared decoy jamming was designed and an algorithm was presented, in which infrared decoy jamming was detected through the radiant energy and angle deviation equation. Simulations show that Radar/IR dual-mode seeker using the interference method can detect the infrared decoy jamming by more than ninety percent probability. The tracking precision is high,and the miss distance is little. The results verify the feasibility of the method.