摘要
提出了一种将切比雪夫逼近与弹跳射线(SBR)相结合的插值方法,并将其应用于含腔电大目标RCS宽角响应的计算中。通过SBR算法求解给定角域内切比雪夫节点处的RCS值,实现角域内任意角度入射情况下的RCS值预测,从而快速有效地分析了目标的RCS宽角响应。数值结果证明了该方法的准确性和高效性,缩短了60%以上的计算时间。
An interpolation technique which combines Chebeshev approximation and shooting and bouncing ray（SBR） method is proposed to calculate wide angel radar cross section（RCS） of electrically large object with open cavities.The nodes of Chebyshev within a given angel range are found firstly,and the RCS at these nodes are computed by SBR method.Then the wide angels RCS can be obtained at any angel within the given angel range via the Chebeshev approximation.The numerical results show that this method is efficient and accurate,and can save more than 60% computing time.
出处
《电子科技》
2011年第5期1-3,6,共4页
Electronic Science and Technology
基金
国家自然科学基金资助项目(60771040)
关键词
电大目标
腔体
切比雪夫逼近
弹跳射线方法
雷达散射截面
electrically large object
cavities
Chebyshev approximation
shooting and bouncing ray
radar cross section
