两种典型桅杆的多极化RCS统计分析

对舰船RCS基本统计量进行归类和分析,以桁架式和封闭式桅杆缩比模型为研究对象,基于快速多极子方法,对其在各种极化组合下的单站RCS进行计算和统计分析.结果显示：桅杆的RCS随雷达波入射姿态角有较多的起伏,且幅值较大,RCS序列密度峰值偏向低于平均值方向.封闭式桅杆比桁架式桅杆的整体的隐身效果更好,但在当舰船处于最不利角度时封闭式桅杆的隐身效果并不一定占优.RCS分布在不同极化方式下均存在差异,在进行桅杆隐身设计或分类识别时应不建议考评单个极化方式,但可忽略交叉极化工况.

Multi-polarization RCS Statistical Analysis of Two Typical Mast

Classified and analyzed the basic statistics of the warship＇s radar cross section. Based on the fast multipole method, taken the trussed and enclosed masts＇ scaled model as the object, the calculation and statistical analysis of monostat- ic RCS in different polarization have been proceed. Results show that the RCS have a great vibration with the incident angles, and larger amplitude. RCS seqtlenee density peak is pointing in the direction oflower than the average. The stealth effect of enclosed mast is better, but not in the most dangerous angle. The distribution of RCS is differences in different polarization modes. When making stealth mast design or recognition, only one single polarization condition is not recommended, but cross polarization condition can be neglected.