Perturbation Influence Analysis on the RCS of Dynamic Targets
The computation of the electromagnetic scattering for flying target usually has more practical meanings in stealth performance evaluation and weapon design.As a fast RCS prediction method with acceptable error,GRECO(Graphical Electromagnetic Computing)provides the possibility of broad-scale RCS computation for electrically large dynamic targets.In the actual environment,flying target(like aircraft)is influenced by the unpredictable factors,like atmospheric interference,fuselage shake and flying operation,etc..These factors usually bring perturbation in both flight and radar view point,which are commonly not considered in the simulation.The high sensitivity of the targets RCS in high frequency region indicates the potential influence on radar target characteristic simulated from the simulation results without perturbation consideration.In this paper,the perturbation of the aircraft is modeled as the uniformly distributed random variables on pitch,yaw and roll planes individually.The application of the Monte-Carlo simulation in GRECO is used for analyzing the perturbation effects on the aircrafts RCS.Gaussian model is proposed as the description of the RCS difference,whose sensitivity on frequency,polarization and turbulence extents are also studied.The conclusion could be used as the consultation on the comparison of RCS between measurement and simulation.
Jia Liu Min Su Ning Fang Bao Fa Wang
Department of Electronic and Information Engineering Beijing University of Aeronautics and Astronautics,Beijing 100191,China
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
900-904
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）