Study on Dynamic RCS of Hypersonic Vehicle

In this paper, based on physical optics method, the dynamic RCS of hypersonic vehicle coated with plasma sheath is studied. Firstly, the RCS of blunt cone covered by plasma sheath is compared with that of metal blunt cone, and it is found that the existence of plasma sheath will attenuate electromagnetic signal and reduce the RCS of target. Then, the dynamic RCS of blunt cone at different reentry heights and incident frequencies is explored. Firstly, the overall change trend of dynamic RCS of blunt cone is obtained, and then it is found that the change of dynamic RCS is related to reentry heights and incident frequencies. The main contribution of this paper is to build a dynamic RCS database to record the dynamic RCS changes of blunt cone at different reentry heights and incident frequencies.