近地面三阵子天线估计电磁波到达角和极化参数  

Direction of arrival of EMW and polarization parameter estimation using tripole near the earth surface

作　　者：孙杰[1,2] 张晓娟[1] 方广有[1] 

机构地区：[1]中国科学院电磁辐射与探测技术院重点实验室,北京100190 [2]中国科学院大学,北京100190

出　　处：《物理学报》2013年第19期523-527,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61172017)资助的课题~~

摘　　要：从自由空间中的三阵子天线求入射电磁波极角和方位角的基本原理出发,结合电场各个分量与极化方式之间的关系给出了左手极化波计算波达角的公式,及地球表面上方三阵子天线判断入射波极化方向的方法;本文提出了一种新颖的滤除地面反射波的方法,保证了波达角的求解精度;利用获得的高精度的波达角和测得的电场强度,计算出了电磁波的各种极化参数,这些极化参数可以作为电离层研究和电磁波在电离层中传播研究的参考.Based on the principal theory of tripole antenna in free space to compute the polar angle and azimuth angle of the incident electromagnetic wave （EMW）, and the relations between each component of electric field and polarization, the formula for computing direction of arrival （DOA） of left-hand polarization electromagnetic wave and the method of determining the sense of the incident wave are presented. A novel method to filter out the reflected wave from the earth surface is put forward, which ensures the accuracy of the DOA, various polarization parameters are gained from DOA computed and electric field intensity, these polarization parameters serve as reference data for research of ionosphere and electromagnetic wave propagation in the ionosphere.

关 键 词：地球表面 三阵子天线 波达角 极化参数 

分 类 号：TN820[电子电信—信息与通信工程] O441.4[理学—电磁学]