摘要
用修正的双三次参数样条拟合目标外形,可直接使用飞机外形CAD设计数据库,拟合绕射点坐标、主曲率半径、主方向、短程线及其它一些几何参数,并用一致几何绕射理论计算目标的雷达散射截面。计算精度可达1dBsm以下,理论计算与实验结果吻合很好。
It is a modified method of using bicubic parameters spline interplation to mimic the contour of radar targets.It could be able to use the CAD data library of plane contour,directly.Diffraction points,principal radii of curvatures,principal directions,geodesic line and other parameters mimicked by this method.The radar cross section calculation of an arbitrary perfectly conducting convex target is based on uniform geometric theory of diffraction.The precision of the calculation is below 1 dBsm.Numerical results based on above method show good agreement with experiments.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1990年第1期101-108,共8页
Journal of Beijing University of Aeronautics and Astronautics
关键词
雷达
散射截面
目标外形
拟合
radar cross secton,uniform geometric theory of diffraction,backscatterlng,contour mimicry,cubic splin.
