摘要
对月基甚低频射电干涉仪所用Tripole矢量有源天线进行理论分析,计算了不同激励下的辐射方向图以及给定方向图时所需的激励。不同于传统的天线阵列方法,单一的Tri-pole(三阵子)天线即可实现对入射波达波方向(DOA)的估计。运用改进的基于单位矩阵束(UMP)和最小二乘法(LS)的算法实现了对Tripole天线达波方向的估计,该算法适用于对入射波不同频率分量的DOA估计,计算量小,且估计精度更高,仿真结果表明了算法的有效性。
In this paper,the tripole antenna for lunar very low frequency interferometer is analyzed in theory,the radiation patterns with different excitations are obtained,as well as the excitations for desired patterns.Different from the antenna arrays,it can be used to estimate the direction of arrival（DOA）of multiple incident waves by single tripole antenna.The new algorithm based on Unitary Matrix Pencil（UMP）and Least Squares（LS）Method is utilized to estimate the DOA for the tripole antenna,which achieves a high precision with less computations,and can be used for the DOA estimation of different frequency waves.Simulations are given to testify the validity of the algorithm.
出处
《电波科学学报》
EI
CSCD
北大核心
2010年第6期1064-1072,共9页
Chinese Journal of Radio Science
基金
荷兰皇家科学院-中国科学院博士生联合培养项目基金资助(07PhD10)
"十一五"民用航天预研项目
