红外空空导弹抗干扰性能评估方法研究

为解决红外空空导弹抗干扰性能难于定量评估问题,给出了一种新的评估方法,用于在定型阶段对导弹的抗干扰性能进行鉴定。该方法首先规划了导弹抗干扰试验。为便于对试验结果进行深入研究,将导弹抗干扰试验分解为导引头抗干扰试验和导弹控制系统抗干扰试验。导引头抗干扰试验分为数字仿真、半实物仿真、系留飞行和靶场发射试验,导弹控制系统抗干扰试验分为数字仿真、半实物仿真和靶场发射试验,通过多层贝叶斯估计分别得到了导引头和控制系统抗干扰概率模型,再利用二阶矩等效方法,推导出了由导引头和控制系统串联组成的导弹系统抗干扰评估模型。算例分析表明,该方法与传统统计方法相比,具有结果可靠、精度高的优点,且能给出抗干扰概率的置信区间。

An Evaluation Method of Infrared Missile Countermeasures Performance

A new method is given in this paper in order to evaluate the air-to-air missile (AAM) infrared countermeasures (IRCM) performance, the method can be used in detecting IR missile in the assessment phase. By using this method, IRCM tests are analyzed and programmed first, then each missile IRCM test is decomposed into seeker IRCM test and guide & control (G&C) IRCM test in order to measure test data accurately. The resource categories of seeker IRCM test include digital simulation (DSM), hard-in-loop simulation (HTIL), installed systems (ITLS) test and launch test, the resource categories of G&C IRCM test include DSM, HTIL and launch test. By hierarchical Bayesian analysis method the seeker IRCM probability model and the G&C IRCM probability model are deduced, then by Second-moment-equivalent assessment of serial reliability the missile IRCM probability is got. In comparison with the traditional evaluation method, the method discussed in this paper is reliable and precise, and by using it the confidence interval of the AAM IRCM probability can be obtained.