基于ESPRIT的阵列变形引起DOA估计误差的有源校正方法
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- 英文论文题名：An Active Correction Method for DOA Estimation Errors Caused by Array Deformation Based on ESPRIT
- 论文作者：杜文豪 ; 李文涛 ; 雷亚杰 ; 史小卫
- 英文论文作者：Du Wen-hao ; Li Wen-tao ; Lei Ya-jie ; Shi Xiao-wei ; Science and Technology on Antenna and Microwave ; Xidian University
- 年：2017
- 作者机构：西安电子科技大学天线与微波技术重点实验室;
- 论文关键词：阵列天线 ; 变形 ; ESPRIT ; 有源校正 ; 幅相误差
- 英文论文关键词：antenna array ; distortion ; ESPRIT ; active correction ; gain and phase error
- 会议召开时间：2017-05-08
- 会议录名称：2017年全国微波毫米波会议论文集（中册）
- 英文会议录名称：Proceedings of 2017 National Conference on Microwave and Millimeter Waves(NCMMW2017)
- 语种：中文
- 分类号：TN911.7
- 学会代码：ZDWB
- 会议名称：2017年全国微波毫米波会议
- 会议地点：中国浙江杭州
- 主办单位：中国电子学会
- 学会名称：中国电子学会微波分会
- 页数：4
- 文件大小：1065k
- 原文格式：D
- 会议级别：全国
摘要
由于受到外界因素影响,天线阵列会发生形变,从而造成阵列DOA估计性能严重下降。针对这一问题,本文提出一种基于ESPRIT算法的DOA估计误差的有源校正方法,该方法主要针对阵列发生低阶形变的情况。在校正源来向精确已知的情况下,通过改进ESPRIT算法,得到其它信号源的DOA估计。仿真实验证明,该方法能够有效校正阵列振动变形造成常规DOA估计方法的结果误差,该方法具有ESPRIT不需要谱搜索的优点,并且校正效果显著。
Due to external factors, the antenna array will be deformed, resulting in array antenna DOA estimated performance degradation. Aiming at this problem, this paper proposes an active correction method for DOA estimation error based on ESPRIT algorithm, which mainly focuses on the low order deformation of the array. In the case the direction of the correction source is precisely known, the ESPRIT algorithm is improved to obtain DOA estimates for other sources. The simulation results show that the proposed method can effectively correct the result error of the conventional DOA estimation method, which has the advantage of ESPRIT without spectral search, and the correction effect is obvious.
Due to external factors, the antenna array will be deformed, resulting in array antenna DOA estimated performance degradation. Aiming at this problem, this paper proposes an active correction method for DOA estimation error based on ESPRIT algorithm, which mainly focuses on the low order deformation of the array. In the case the direction of the correction source is precisely known, the ESPRIT algorithm is improved to obtain DOA estimates for other sources. The simulation results show that the proposed method can effectively correct the result error of the conventional DOA estimation method, which has the advantage of ESPRIT without spectral search, and the correction effect is obvious.
引文
1王布宏,王永良,陈辉,郭英.方位依赖阵元幅相误差校正的辅助阵元法[J].中国科学,E辑,2004,34(8):906—918.
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5 Schippers H,Tongeren J H,Vos G.Development of Smart Antennas on Vibrating Structures of Aerospace Platforms of Conformal Antennas on Aircraft Structures[C]//NATO AVT Specialists Meeting,2-5 October 2006.
2 Friedlander B and Weiss A J.Eigenstructure methods for direction finding with sensor gain and phase uncertainties[C].Proceedings of the International Conference on Acoustics,Speech,and Signal Processing,New York,1988:2681-2684.
3 相平,唐志凯,刘隆和,等.阵元位置误差有源估计方法研究[J].海军航空工程学院学报,2005,20(2):251-253.
4 王鼎,林四川,李长胜.一种新的阵元位置误差有源校正算法[J].雷达科学与技术.2003,6(3):226-231.
5 Schippers H,Tongeren J H,Vos G.Development of Smart Antennas on Vibrating Structures of Aerospace Platforms of Conformal Antennas on Aircraft Structures[C]//NATO AVT Specialists Meeting,2-5 October 2006.