曲面参数二次模拟结合积分奇异降阶的矩量法数值计算  

NUMERICAL CALCULATION OF COMBINING SURFACE PARAMETRIC QUADRATIC MODELING WITH REDUCING SINGULARITY ORDER OF INTEGRAL IN MOMENT METHOD

作　　者：王浩刚[1] 聂在平[1] 王军[1] 胡俊[1] 姚海英[1] 

机构地区：[1]电子科技大学微波工程系,成都610054

出　　处：《电子与信息学报》2002年第1期83-89,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金

摘　　要：该文研究了曲面参数二次模拟结合积分奇异降阶的数值方法,用于矩量法计算将目标体用参数二次曲面模拟,通过奇异降阶法把积分奇异性从O(1/R^2)降至O(1/R)。相比其它一些数值方法,该方法不但简化了自阻抗元素的计算复杂性,而且增加了计算的稳定性和精确性。该方法计算了某些目标体的雷达散射截面(RCS)。其结果与其它方法所得结果相比较十分一致。In this paper, the numerical inethod of combining surface parametric quadratic niodeling with singularity orders reducing in moment method is analjzed. The object.s are inodeled by parametric quadratic surface. The singularity order of the integral is reduced from O(1/K2) to O(1/R). Compared with other methods, this method simplifies the complexity of self-impedance elements calculating and increases its calculating stability and ac,cura,cy. It is applied to calculating RCS of some objects. Good agreement with the results from some other methods is found.

关 键 词：曲面参数 二次模拟 积分奇异降阶 矩量法 数值计算 

分 类 号：O241[理学—计算数学]