极化敏感阵列的空间谱估计测向技术研究  

Study on spatial spectrum DOA estimation technique for polarization sensitive array

作　　者：任生凯[1] 周瑞青[1] 周大卫[1] 王开斌[1] 

机构地区：[1]中国航天科工集团二院二十五所,北京100854

出　　处：《航天电子对抗》2016年第1期31-34,共4页Aerospace Electronic Warfare

摘　　要：传统的空间谱估计测向模型中没有考虑来波极化这一维度的信息,将其用于极化敏感阵列进行测向时会导致测向的灵敏度和精度下降。为此,对传统的空间谱估计测向模型进行了修正,加入对来波极化信息的考虑,提出一种极化敏感阵列的空间谱估计测向技术,并对该技术的可行性进行了研究。给出极化敏感阵列的空间谱估计测向模型,在此基础上,采用MUSIC算法进行测向,并对影响测向精度的因素进行仿真。仿真结果表明,提出的极化敏感阵列空间谱估计测向技术可以实现极化敏感阵列的测向,所得结果对极化敏感阵列的测向问题具有重要意义。The traditional spatial spectrum direction-of-arrival（DOA）estimation technique doesn′t take the polarization information into account.So it causes low sensitivity and large error when it is applied to the polarization sensitive array.For this reason,the traditional spatial spectrum DOA estimation technique is modified,building the polarization information into the model.A spatial spectrum DOA estimation technique for polarization sensitive array is proposed,and it′s feasibility is studied.The spatial spectrum DOA estimation model for polarization sensitive array is given.On this basis,MUSIC algorithm is introduced to estimate targets DOA,and the relevant simulation is done.The results show that the spatial spectrum DOA estimation technique presented can realize direction finding for polarization sensitive array.The conclusion obtained is meaningful for direction finding problems of polarization sensitive array.

关 键 词：极化敏感阵列 空间谱估计 测向 

分 类 号：TN911.7[电子电信—通信与信息系统]