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本文简要地回顾了各种不同形式随机变量的概率密度函数及其在应用上各自的特点和相互间的关系等后,根据飞机目标反射特点试验中的实测数据及用数学模型表示目标特性的两种情况,编制了分析用程序,在中、小型电脑上计算了飞机目标特性带起伏情况下雷达系统的真实探测概率。结果表明:由于目标反射特性的振幅起伏或角闪烁,前者引起了远距离上的虚假截获;后者又会降低探测概率,以致在防空和空战情景中贻误战机。
This paper briefly reviews the probability density functions of various forms of random variables and their respective characteristics and mutual relations after application. According to the measured data of the aircraft target reflection characteristics test and the mathematical model of the target characteristics In this case, an analysis program was compiled to calculate the real detection probabilities of the radar system with the target characteristics of the aircraft being undulated on medium and small computers. The results show that the former causes spurious intercepts over long distances due to amplitude fluctuations or angular flicker of the target reflection characteristic, which in turn reduces the probability of detection resulting in adverse effects in air defense and air combat scenarios.