【作者】 贾明权； 陈彦； 童玲；

【Author】 Jia Mingquan Chen Yan Tong Ling (University of Electron Science and Technology of China/College of A utomation Chengddu 610054)

【机构】 电子科技大学自动化工程学院；

【摘要】 自由空间法是一种针对大面积目标宏观复介电常数的开放式测量方法。本实验利用室内测量系统实现了自由空间法对具有一定吸波作用的海绵体材料的测量,实验中用双极化定标的方式,在X波段分别用不同的天线入射角下完成测量,并反演了材料的宏观介电常数;通过与同轴探针法的测量进行对比,结果符合得比较好。初步验证了利用该测量系统实现自由空间法宏观介电常数测量的有效性,对微波遥感机理研究提供了一种有效的理论和实验研究平台。更多还原

【Abstract】 Free-space method is a opening measurement method which aim at the macroscopical complex dielectric constants of large area.This experiment used free-space measuring system which is inside of room had completed to measure sponge material that could absorb a lot of electromagnetic wave.The experiment performed in X frequency range used the dual polarization method,and used different an angle of antenna incidence to perform measurement,and inversed the material’s dielectric constant.On the other hand,after comparing the measuring data of coaxial line probe method to find the result is basically consistent.So it proved the free-space method system can be used to measure dielectric constant in broad band frequency of X-band,and this is an effective theory and experiment system for microwave remote sensing mechanism research.更多还原