基于MUSIC的分布式极化敏感立体阵列DOA估计  

DOA estimation of distributed polarization sensitive stereo array based on MUSIC

作　　者：赵立鹏 姚国国[2] 禹永植[1] 陈涛[1] Zhao Lipeng;Yao Guoguo;Yu Yongzhi;Chen Tao(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China;Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons,China Airborne Missile Academy,Luoyang 471009,Henan,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]中国空空导弹研究院航空制导武器航空科技重点实验室,河南洛阳471009

出　　处：《航天电子对抗》2020年第6期11-17,共7页Aerospace Electronic Warfare

基　　金：航空科学基金项目(201801P6001)。

摘　　要：针对共形阵列中需要更灵活地摆放阵元的问题,建立了分布式极化敏感立体阵列的数学模型,可实现阵元任意位置的空间摆放,为共形多极化敏感阵列的进一步使用提供了理论基础。在模型建立的基础上,将秩亏极化MUSIC算法移植到了分布式极化敏感立体阵列中。同时,针对实际应用中的幅相不一致问题,提出了静态校正的方法,即先消除极化参数和纵轴影响,再补偿幅相不一致,对通道幅相误差进行校正。最终,针对分布式极化敏感立体阵列,实现了入射信号的到达角和极化参数联合估计。仿真实验中,实现了2信源的联合估计,仿真结果表明分布式极化敏感立体阵列实现到达角和极化参数联合估计是可行的并具有较高的分辨力。Focusing on the problem of more flexible placement of elements in conformal array,a mathematical model of distributed polarization sensitive stereo array is proposed.It can realize the spatial placement of the element at any position.A theoretical basis for the further use of the conformal multi-polarization sensitive array is provided.And then the rank deficient polarization MUSIC algorithm is transplanted to the polarization sensitive stereo array.Aiming at the inconsistency of amplitude and phase in practical applications,a static correction method is proposed.First,the influence of polarization parameters and the vertical axis is eliminated.And then the inconsistent of amplitude and phase is compensated,the channel amplitude and phase error is corrected.Lastly,the joint estimation of the DOA and polarization parameters of signals is realized.In the simulation experiment,the joint estimation of two signals is realized.The simulation results show that the joint estimation of DOA and polarization parameters is feasible and the resolution is relatively high.

关 键 词：立体阵列 极化敏感阵列 极化MUSIC算法 波达方向 极化参数估计 

分 类 号：TN971[电子电信—信号与信息处理]