锯齿台阶目标电磁散射特性研究

通过系列雷达散射截面(RCS)测试,研究分析了锯齿台阶电磁散射特性与其锯齿齿数、锯齿角度、相对于电磁波入射方向的俯仰角之间的变化关系,并将锯齿台阶散射结果与单直台阶进行比较,分析了各参数对锯齿台阶散射的影响。实验结果表明:对于相同齿数的锯齿台阶,当锯齿角度为适当钝角时,可得到较好的散射特性;对于同一锯齿台阶,随其相对于电磁波照射方向的俯角增大,在一定角度范围内其RCS呈下降趋势,散射特性得到改善。

Analysis on the electromagnetic scattering characteristic of serrated steps

The variable relationships between the electromagnetic scattering characteristics of serrated steps and the number,serrate angle or the pitch angle against incoming direction of wave were studied in a series of radar cross section(RCS) testing.The effects of these factors were analyzed by comparing these results to the testing results of straight step.It is shown that a rational obtuse angle is better for its scattering characteristic of same serrate tip number;referring to the same serrated step,the RCS is reduced,the scattering performance is improved according with decreasing of pitch angle in certain angle range.