摘要
图形电磁计算方法是计算复杂目标高频区雷达散射截面(RCS)的有效方法之一。而复杂目标的电磁散射主要来源于面元以及棱边。针对传统图形电磁计算方法的特点及其不足之处,提出并实施了相应的改进措施,包括:对面元散射场的离散化计算公式进行了修正,对棱边散射场的计算引用新的等效电磁流边缘分量表达式。计算实例表明,改进后的方法与实验测量值吻合良好,具有更高的计算精度和准确性。该方法对隐身与反隐身技术及仿真技术的研究,具有一定的参考价值。
Graphical electromagnetic computing is one of the valuable methods for computing the high- frequency radar cross section （RCS） of complex radar target. Scatting field of complex target can be attributed to combination of surface and wedge of the target. According to the features and some shortages of conventional GRECO method, presents some important improvements on GRECO. The improvements are that revise the discrete- form expressions for scattering fields of facets and also use new expressions for fringe current components of equivalent edge currents to compute the scattering fields of edges. The improved method has the feature of high precision and accuracy. This method is helpful and valuable to the study of stealth/antistealth or simulation tedmology.
出处
《计算机技术与发展》
2008年第7期203-205,共3页
Computer Technology and Development
基金
安徽省自然科学基金重点资助项目(KJ2007A081)
关键词
电磁散射
雷达散射截面
等效电磁流
绕射系数
electromagnetic wave scattering
radar cross section
equivalent currents
diffraction coefficients
