复杂目标近场电磁散射的可视化计算方法

首次介绍了复杂目标近场散射计算的可视化方法。采用非均匀有理Ｂ样条曲面（ＮＵＲＢＳ）精确构造任意形状散射体，结合几何体近场透视变换和Ｚ－Ｂｕｆｆｅｒ技术实现了基于Ｗｉｎｄｏｗｓ平台的近场散射计算。提出广义雷达散射截面的概念并给出的若干算例。该方法充分利用了计算机３Ｄ图形设备的几何运算能力，运算速度快，严谨高，可扩展性好。

Visual Method of Near-field EM Scattering Computation for Complex Targets

A visual method for near-field scattering of complex targets is introduced. Arbitrarily shaped scatterers are precisely modeled by means of Non-Uniform Rational B-Spline Surfaces (NURBS). By using perspective transformation and Z-Buffer technique, a Windows based near-field computation is implemented. The concept of Generalized Radar Cross Section is introduced. The efficient and accurate algorithm is validated by numerical results thanks to the full utilization of computer 3D devices.