自由空间复杂导体目标的太赫兹RCS高频分析方法

自由空间复杂导体目标的太赫兹RCS高频分析方法

内容简介：研究了自由空间复杂导体目标的太赫兹(THz)雷达散射截面(RCS)的高频求解方法。将并矢格林函数引入物理光学方法中，对自由空间环境进行考虑，推导出自由空间物理光学分析方法，并结合图形电磁计算(GRECO)方法，采用分区显示算法改进后，在Visual C++2010程序中实现目标的OpenGL显示，对自由空间复杂导体目标进行消隐判断，提取像素面元法矢量和深度缓存等有效信息，计算了自由空间复杂导体目标的THz RCS。最后，将程序计算结果与FEKO软件仿真结果进行比较，结果证明该方法的有效性和准确性。该研究结果为THz雷达未来在军事、天文和遥感等领域的应用提供了重要依据和方法。

Abstract：The high-frequency method for the prediction of radar cross section (RCS) of complex conductive targets in the terahertz (THz) band in free space was presented. In order to consider the scattering fields of the complex perfectly electric conducting (PEC) targets in free space, the Green′s function was introduced into the conventional physical optics method. Combining the graphical electromagnetic computing (GRECO) method and using the partition display algorithm to improve, the shadow regions were eliminated by displaying lists technology of OpenGL to rebuild the complex targets, and the geometry information was attained by reading the color and depth of each pixel. The THz RCS of complex conductive targets can be exactly calculated in free space. The RCS comparison between GRECO prediction and simulation of FEKO software proves the validity and accuracy of the proposed method. The results provides an important basis and method for the application of THz radar in many fields such as military, astronomy and remote sensing in the future.

作者：华厚强, 江月松, 苏林, 闻东海, 余荣, 武小芳,

关键词：雷达散射截面, RCS, 太赫兹, 图形电磁计算, 物理光学方法, 分区显示算法