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给出一种求有理Bézier曲面的偏导矢有效算法,对处于光学区的光滑凸目标,通过其上的型值点,用有理Bézier曲面来拟合此目标,并根据光学区物体的散射特点,由拟合出的数据求出此目标各点处沿两参数方向曲面曲线的法曲率及单位外法向量,对于任意方向的雷达波,得出一个用几何光学法求此目标的雷达散射截面(RCS)的方法.
An effective partial deflection vector algorithm for finding rational Bézier surfaces is proposed. For a smooth convex object in the optical zone, a rational Bézier surface is used to fit the target through its type point. According to the scattering characteristics of the object in the optical zone From the fitted data, the normal curvature and unit normals along the curve of the two parameters at each point of the target are calculated. For the radar wave in any direction, a radar cross section (RCS) method.