Analysis On Dynamic Performance Of AEW Radar Initiative Detection Space

Different from detecting space of land-based radar which has relative unchangabledetection space,AEW radar's detecting space changes with the carrier's patrol line.What'smore,because of both movements of carrier and targets,AEW radar will detect targets whichwere out of its coverage. Dynamic Performance of Initiative detection space just means thisradar detection ability which contains movements of carrier and target , which is in the form ofspace distribution,and which is one of the important factors shoud be considered whilemaking mission plans of AWACS.During this paper,definition of the measure enter-cover-probability is given, andthree-dimension detection space are transformed to level detection circles on differentheights.Aiming at the most normal situation of symmetric line,cross-to line and cross-awayline taken by the carrier,probablely-enter-cover-target-distribution are analysed in relativemovement method on the premise that targets fly perpendicular to the flying direction of thecarrier.Mont-cario method is used to simulate uniformly-distributed-targets situation and getthe measure,and results are used to analyse the influence of line-landscape-orientation-ratio,line-portrait-ratio,and speed-ratio on the measure.For further research,influences of height and blind space are also discussed on base ofradar level detection range,and situations of non-uniformly-distributed targets are alsoresearched.Conclusions of this paper are as follows:(1) The measure increases with decrease of line-landscape-orientation-ratio orline-portrait-ratio,or with increase of speed-ratio. Of the three factors, line-landscape-orientation-ratio influences most, speed-ratio influences less,and line-portrait-ratio influencesleast.(2) If not considering blind space and targets are uniformly distributed,detectionperformance are close for the three kinds of line when speed-ratio is less than 1,and cross-toline will achieve higher enter-cover-probability when speed-ratio is more than 1. If takingblind space into account, for case of balance-beam radar,cross-away line can get higherstrict-enter-cover-probability.But for fear that probablely-enter-cover target distribution comesbehind the patrol line,the three factors should be limited if taking cross line.