Analysis of Effect of Warhead Shape on Missile's RCS

The missile configuration is simplified and the electromagnetic scattering model of missile is built in this paper.High-frequency techniques,including physical optics(PO),method of equivalent currents(MEC),and geometrical optics(GO),were used to calculate the radar cross section(RCS) of various scattering-centers of this model.Total RCS of the missile with oliveshape warhead was calculated considering the phase contributions of scatteringcenters.The results are in accordance with the measured results given by references.It is showed that the method is effective and can satisfy the analysis need for the RCS predication of missile.Then,the missile's RCS with ellipsoid-shape and hemisphere-shape warheads under different polarization modes were reckoned.Based on the curve of RCS,the effects of different shapes of warheads on missile's electromagnetic scattering characteristics are analyzed.