金属立体目标毫米波辐射的仿真计算与实验测量

【作者】 王攀； 王平； 刘明明； 桂良启； 郎量； 陈柯； 郭伟；

【Author】 WANG pan;WANG ping;LIU mingming;GUI liangqi;LANG liang;CHEN ke;GUO wei;Science and Technology on Multi-spectral Information Processing Laboratory,School of Electronic Information and Communications, Huazhong University of Science and Technology;

【机构】 华中科技大学多谱信息处理技术国家级重点实验室,电子信息与通信学院；

【摘要】 本文提出一种金属立体目标毫米波辐射的仿真计算方法。将金属立体目标表面划分为若干个小曲面,对每个小曲面的辐射,用与小曲面中心点处等面积的切平面辐射近似表示,再将所有小曲面进行综合运算获得金属立体目标毫米波辐射。文中以金属半球体为例进行了仿真计算和实验测量,结果表明:金属半球体目标和金属平面目标的天线温度相差较大,本文提出的方法比等效平面法更为准确。本文的研究结果为金属立体目标辐射的准确计算和被动毫米波探测系统的设计提供了依据。更多还原

【Abstract】 In this paper, a method was proposed to calculate the radiation of solid metal target. First, the surface of the solid metal target was divided into several small curved surfaces. Then the radiation of each small curved surface could be approximately expressed by the radiation of its tangent plane which has the same area of the small curved surface. Further more, the MMW radiation of solid metal target can be obtained by doing the Synthetic calculation of the small curved surface. The modeling simulation and experimental validation of the metal hemispheroid was also conducted. The results indicated that it has a big difference in the antenna temperature between the solid metal target and the plane metal target. It is discovered that the proposed method was more accurate. The results in this paper provide accurate calculation for solid metal target, and basis for the design of passive millimeter wave detection.更多还原