摘要
Ludwig积分在雷达散射截面(RCS)计算中被广泛应用。传统的Ludwig积分针对基于三角形面元的模型剖分技术,因此主要用于平面片积分。三角形面片由于是平面片,因此无法对复杂模型准确建模。本文改进了Ludwig积分,并将其用于基于NURBS(非均匀有理B样条)技术的曲面积分。通过计算实例可以看出改进后的Ludwig积分形式适用于基于曲面建模技术的物理光学(PO)算法。
Ludwig＇s integral is widely used in RCS （Radar Cross Section） simulation. The traditional Ludwig＇s algorithm is mainly used for the targets meshed with triangle facets, and it does not cannot be modeled exactly the complex targets. By employing the NURBS （Non Uniform Rational Bezier Surface） technology that can model the target accurately, an improved formula of the Ludwig＇s algorithm is presented in this paper. With the application of the formula into the integral of curve surface, the numerical results show that the improved formula is valid for NURBS-PO method.
出处
《电波科学学报》
EI
CSCD
北大核心
2006年第6期935-938,共4页
Chinese Journal of Radio Science
