【摘 要】
：
图形电磁计算(GRECO)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.分析了原始GRECO方法在判定目标图象棱边象素的不足之处,给出了相应的改进措施.改进后的软件
【机 构】
：
Department of Electronic Engineering
【基金项目】
：
Foundation of National Key Laboratory of Electromagnetic Environmental Research
论文部分内容阅读
图形电磁计算(GRECO)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.分析了原始GRECO方法在判定目标图象棱边象素的不足之处,给出了相应的改进措施.改进后的软件能够更准确、充分地判定目标的棱边象素及获得棱边参数.在边缘绕射场的计算方面,指出了相关文献中存在的错误,给出了基于等效电磁流法(MEC)和物理绕射理论(PTD)的边缘绕射场计算式,及与物理光学(PO)场叠加求取RCS的完整表达式.计算实例表明,新的方法具有更高的准确度,与实验测量值吻合.
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