一种改进的虚拟变换自适应波束形成方法

王明哲; 王俊

doi:10.3724/SP.J.1146.2007.01082

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一种改进的虚拟变换自适应波束形成方法

doi: 10.3724/SP.J.1146.2007.01082

王明哲,
王俊

基金项目:

国家自然科学基金(60472087)和国家部委重点基金(9140A07050908 DZ01)资助课题

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- 文章访问数: 2919
- HTML全文浏览量: 84
- PDF下载量: 1254
- 被引次数: 0
出版历程
- 收稿日期: 2007-07-02
- 修回日期: 2007-12-10
- 刊出日期: 2009-01-19

An Improvement on Adaptive Beamforming via Virtual Array Transformation

摘要

摘要: 常规虚拟变换技术用于波束形成时，受变换区域影响较大，在区域选择不当时甚至会引起整个方向图的严重畸变。本文提出了一种改进方法，该方法基于子空间投影思想，给常规变换矩阵引入干扰方向信息。利用该方法形成波束时，能稳定地形成对准干扰方向的零点，对变换区域的选择也不很敏感。并且在小快拍数时仍然具有良好的波束保形能力。理论分析和计算机仿真验证了该方法的有效性。
- 波束形成;虚拟变换;变换区域
Abstract: When the conventional virtual array is used for adaptive beamforming, the performance is largely influenced with the transforming area, even the serious distortion of the whole beam map will be aroused if an improper transforming area is chosen. This paper expressed an improvement solution based on subspace processing. With the presented algorithm, the interference null can be steadily formed. Meanwhile, it is not sensitive to which transforming area is chosen. On the other hand, this method can still form a good beam although there are a few snaps. Numerical examples attest the correctness and the validity of the proposed algorithm.

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Shan T J, Wax M, and Kailath T. On spatial smoothingfor direction-of-arrival estimating of coherent signals[J].IEEE Trans. on Acoust, Speech, Signal Processing.1985,33(8):806-811[2]张玉洪, 保铮. 最佳非均匀间隔稀布阵列的研究. 电子学报, 1989, 17(4): 81-87.Zhang Yu-hong and Bao Zheng. Study of optimumthinning arrays by nonuniform spacings. Acta ElectronicaSinica, 1989, 17(4): 81-87.[3]陈客松, 何子述, 韩春林. 稀疏线阵阵列结构的枚举算法.电子科技大学学报, 2006, (35): 189-192.Chen Ke-song, He Zi-shu, and Han Chun-li. Twoenumerate algorithms applied to thinned arrays synthesis.Journal of UEST of China, 2006, (35): 189-192.[4]Friedlander B. The root-music algorithm for direction findingwith interpolated arrays[J].Signal Processing.1993, 30(1):15-29[5]Weiss A J and Gavish M. Direction finding using esprit withinterpolated arrays[J].IEEE Trans. on SP.1991, 39(6):1473-1478[6]李平安, 许家栋. 一种估计信号源方向的虚拟阵列方法. 西北工业大学学报, 1999, 17(4): 505-508.Li Ping-an and Xu Jia-dong. A virtual array based techniquefor direction finding. Journal of Northwestern PolytechnicalUniversity, 1999, 17(4): 505-508.[7]Su Baowei. Robust adaptive beam forming via arraytransformation[J].2005 IEEE AP-S International Symposiumon Antennas and Propagation. Washington, DC, USA, 3-8July.2005, 1B:331-334

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文章访问数: 2919
HTML全文浏览量: 84
PDF下载量: 1254
被引次数: 0

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一种改进的虚拟变换自适应波束形成方法

doi: 10.3724/SP.J.1146.2007.01082

计量

出版历程

An Improvement on Adaptive Beamforming via Virtual Array Transformation

计量

出版历程

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