摘要
RCS(Radar Cross Section)是反映目标雷达散射特性的一个重要参数。一般把雷达目标除质心平动之外的转动,小幅振动和其它高阶运动统称为微动。主要研究旋翼转动情况下的直升机RCS计算。通过对直升机模型进行可视化计算即一种将目标建模与散射特性计算合为一体的交互式计算,使用图形算法(GRECO)和三维造型软件UG相结合的方法,这种方法与传统的RCS计算方法相比具有实时性好,效率高的优点,计算出直升机主体的RCS,再通过其加入调制的方法,计算得到直升机在旋翼转动条件下的RCS。最后给出了微动直升机的在具体入射情况下的单站RCS值。
Radar Cross Section （RCS） is an important parameter which reflects scattering characteristic of an object. In usual cases, a radar target may have rotations or small vibrations or other high-order in addition to mass translation, which is called micro- motion. In this paper, the main purpose is to discuss RCS of helicopter with blade rotating. Using Visualization method which is realized by integrating modeling of objects with computing scattering characteristic also has some merits such as more mutual,the specific method is integrating GRECO （graphical electromagnetic computing） in to CAD （computer aided design） modeling software which is more efficient comparing with the traditional method, calculating RCS of helicopter＇s main part, then obtain RCS of helicopter under micro- motion by adding modulation. At last, Illustrative numerical results of the helicopter monostatic RCS are presented,which are designed in a fixed angle range.
出处
《航空计算技术》
2009年第3期56-58,共3页
Aeronautical Computing Technique
