Analysis of glint characters of complex coated target
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摘要: 适当的涂覆材料可以使空中目标的后向雷达散射截面缩小,但同时,涂覆材料也会影响角闪烁偏差.为了充分利用涂覆材料的特性,利用图形电磁学和相位梯度法,在高频区对涂覆目标进行了角闪烁特性的建模与计算.鉴于图形电磁学的特色,涂覆目标的角闪烁计算不仅具有可视化特点,而且计算速度快、效率高.利用该方法对两球目标和复杂目标进行了仿真计算,计算结果表明涂覆材料在减小后向雷达散射截面的同时,对角闪烁具有一定的增强作用.Abstract: Appropriate coating material can reduce the back radar cross scatter of air target, at the same time, it may affect the glint of target greatly. To study this affection, first, through physical optics and impedance boundary condition the radar cross section(RCS)was obtained in graphic electromagnetic computing (GRECO) in high frequency region, then using phase gradient method, the glint model of coated target was created. Due to the characters of graphic electromagnetic computation, the computation of glint of coated target has visual, rapid and efficient features. On the basis of this visual method the computation was performed on one two-sphere target and one complex target, respectively. The results show that the coating material can not only reduce radar cross section but also enhance the glint certainly.
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Key words:
- glint /
- coating material /
- back scatter
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