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Improvements of Edges Diffraction Computing in GRECO

机译:GRECO中边缘衍射计算的改进

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Graphical Electromagnetic Computing (GRECO) is one of the valuable methods for computing the radar cross section (RCS) of complex radar target in high frequency region. But there are some shortages of wedge detecting method in the original GRECO literature. A new method for collecting the edge pixels and wedge parameters is presented in this paper. An expression of edge diffraction field in the original GRECO literature is in error, the error-corrected formulas are derived by using method of equivalent edge currents (MEC) and physical theory of diffraction (PTD). Finally, the total RCS expression is given by physical optics (PO) and PTD method. The computing results are in close a-greement with the measured data.
机译:图形电磁计算(GRECO)是计算复杂雷达目标在高频区域的雷达横截面(RCS)的重要方法之一。但是原始GRECO文献中存在一些楔形检测方法的不足。本文提出了一种新的边缘像素和楔形参数采集方法。原始GRECO文献中的边缘衍射场的表达是错误的,使用等效边缘电流(MEC)的方法和衍射的物理理论(PTD)导出了纠错公式。最后,RCS的总表达式由物理光学(PO)和PTD方法给出。计算结果与测量数据非常吻合。

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