多元雷达对隐身飞机的探测与发现建模方法

摘要

Aiming at the problem of only considering single radar and the lack of comprehensive comparison research under different types of radars for detecting stealth plane,the modeling method of detecting stealth plane was built under several kinds of radars,which include warning radar with regular wave band and meter-wave band,early-warning aircraft pulse doppler(PD) radar,bistatic radar,stratospheric airship synthetic impulse and aperture radar.It was based on radar cross section(RCS)dynamic change character that the RCS calculating model was built under angle of incidence,radar band and radar system conditions on the foundation of the designed operation scenario.Then,max detection range models and detecting probability models of all radars are built and the detection distance,range,time and detecting probability of those radars were calculated under the choice of typical radar parameters.The computing results showed that meter band RCS was bigger than other bands,and down-looking RCS was bigger than that of up-looking.Meter radar held far detection distance,but low detecting probability under the same condition.Bistatic radar held farther detection distance with enough detecting probability,but harsh deployment demand to two sites.Near-space was a potential down-looking platform for fully using.%针对探测隐身飞机时仅考虑单一类型雷达且未能将各类型雷达放在同一环境下进行综合比较分析的问题,构建了包括警戒雷达(常规波段和米波段)、预警机脉冲多普勒(Pulse Doppler,PD)雷达、双基地雷达、平流层飞艇载综合脉冲孔径雷达在内的多元雷达对隐身飞机的探测与发现建模方法.该方法在设计的作战想定基础上,基于雷达散射截面(Radar Cross Section,RCS)的动态变化特点,在考虑入射角、雷达体制及波段条件下构建了RCS计算模型,然后建立了各雷达的最大探测距离模型和发现概率模型,并在选取典型雷达参数的基础上计算了各雷达的探测距离、范围、次数及发现概率.计算结果表明,对于RCS而言,米波比其他波段大,下视比上视大;相同条件下,米波雷达探测距离远但发现概率不高,双基地雷达探测范围较远且可保持足够发现概率,但双站部署较为严苛;临近空间平台是可以充分利用的潜在下视探测平台.