隐身飞机投弹对雷达检测性能的影响
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摘要
针对空战中隐身飞机投弹会影响雷达检测性能的问题,提出了一种基于向站平飞的投弹航迹模型以模拟飞机正常飞行和投弹飞行两种状态。利用雷达和飞机的相对位置关系获取了不同飞行状态下动态RCS在时间序列上的起伏变化,并计算了信噪比。结合检测概率原理,分别仿真了不同飞行状态下雷达瞬时检测概率在时间序列上的变化结果。设置两种雷达扫描周期,得到了扫描次数不同时不同飞行航迹下的累积检测概率。结果表明:隐身飞机投弹能够提高雷达的累积检测性能,且在一定程度上增强了防空雷达的预警探测能力。
Aimed at influence of stealth aircraft launching-missiles upon radar detection performance in air combat,a track model of launching missiles based on the level flight model close to the radar is proposed,which mimickes normal flight condition and launching missiles flight condition of aircraft. And the fluctuation variable of dynamic RCS in time sequence is obtained under various flight conditions by utilizing relative position relationship between radar and aircraft,and counts signal-tonoise ratio. Combined with detection probability theory,radar momentary detection probability simulation results varying in time sequence are obtained respectively under various flight conditions.And the accumulate detection probability of different scanning frequency is gotten under various flight track via setting two kinds of different radar searching period. The results show that stealth aircraft launching-missiles can have an effect on radar accumulate detection performance,and to a certain extent,strengthened the early warning detection capability of the air-defense radar.
Aimed at influence of stealth aircraft launching-missiles upon radar detection performance in air combat,a track model of launching missiles based on the level flight model close to the radar is proposed,which mimickes normal flight condition and launching missiles flight condition of aircraft. And the fluctuation variable of dynamic RCS in time sequence is obtained under various flight conditions by utilizing relative position relationship between radar and aircraft,and counts signal-tonoise ratio. Combined with detection probability theory,radar momentary detection probability simulation results varying in time sequence are obtained respectively under various flight conditions.And the accumulate detection probability of different scanning frequency is gotten under various flight track via setting two kinds of different radar searching period. The results show that stealth aircraft launching-missiles can have an effect on radar accumulate detection performance,and to a certain extent,strengthened the early warning detection capability of the air-defense radar.
引文
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[2]高亚奎,王宜芳,任宝平.投弹对飞机稳定性影响分析[J].飞行力学,2005,23(3):25-27.
[3]吴继飞.内埋武器舱系统气动特性研究[D].绵阳:中国空气动力研究与发展中心,2012:17-24.
[4]刘瑜.内埋式弹舱武器发射分离过程研究[D].南京:南京航空航天大学,2010:5-10.
[5]杨俊,李骞,谢云恺,等.超声速内埋武器分离数值研究[J].弹箭与制导学报,2015,35(4):171-174.
[6]冯必鸣,聂万胜,车学科.超声速条件下内埋式武器分离特性的数值分析[J].飞机设计,2009,29(4):1-5.
[7]高旭,刘战合,武哲.缝隙目标电磁散射特性试验[J].航空学报,2008,29(6):1497-1501.
[8]许占显.裂纹缺陷影响隐身性能的模拟与仿真[J].兵器材料科学与工程,2009,32(6):17-19.
[9]WANG L W,JIANG X S. An improved radar detection rangeplotting method based on radar equation[C]//Proceedings ofthe 2011 International Conference on Machine Learning andCybernetics. Piscataway,NJ:IEEE Press,2011:381-385.
[10]MD MI,MUBDIUL I R,JERIN T H. Analysis of improvingthe detection capability of radar in presence of jammer bycontrolling radar effective temperature[C]//8th InternationalConference on Electrical and Computer Engineering.Piscataway,NJ:IEEE Press,2014:773-775.
[11]郑全普,郝建华,俞雷,等.目标起伏特性对雷达威力性能的影响分析[J].现代防御技术,2013,41(4):131-134.
[12]郑全普,张凤伟,霍烁烁.雷达目标检测概率简化算法及应用分析[J].火控雷达技术,2013,42(3):39-42.
[13]蒋正光,李曙林,苏春华.基于探测时间的飞机作战生存力[J].火力与指挥控制,2010,35(7):99-101.
[14]王旭,宋笔锋,郭晓辉.飞行器被雷达发现概率的计算方法研究[J].系统工程理论与实践,2006,26(6):130-134.