基于不确定集的稳健Capon波束形成算法性能分析

戴凌燕; 王永良; 李荣锋; 鲍拯

doi:10.3724/SP.J.1146.2008.01633

基于不确定集的稳健Capon波束形成算法性能分析

doi: 10.3724/SP.J.1146.2008.01633

戴凌燕^{①②;王永良},
王永良,
李荣锋,
鲍拯

计量
- 文章访问数: 3114
- HTML全文浏览量: 83
- PDF下载量: 932
- 被引次数: 0
出版历程
- 收稿日期: 2008-12-05
- 修回日期: 2009-05-11
- 刊出日期: 2009-12-19

Performance Analysis of Robust Capon Beamforming Based on Uncertainty Set

摘要

摘要: 该文针对常规Capon波束形成易受期望信号导向矢量失配影响，研究了基于导向矢量误差不确定集的稳健Capon自适应波束形成算法。推导出期望信号导向矢量属于球形不确定集时的自适应权矢量近似闭式解，并由此进行性能评估，得到目标功率估计和输出信号干扰噪声比的近似表达式，从而明确了各种因素对性能的影响关系。计算机仿真结果证明了该文分析的合理性。
- 稳健Capon波束形成; 导向矢量; 不确定集; 加载因子
Abstract: Since standard Capon beamformer is susceptible to the steering vector mismatches of the Signal Of Interest(SOI), robust Capon beamforming based on steering vector error uncertainty set is investigated. In the cases that the practical steering vector belongs to a spherical uncertainty set, an approximate closed-form solution to the weight vector is derived with a series of approximate deductions. With the solution, the approximate expressions of the targets power estimation and the output signal-to-interference-plus-noise ratio are presented for analysis evaluation, which provides insights into the influence factors on performace. The simulation results demonstrate the reasonability of the analysis in this paper.

HTML全文

参考文献(1)

Wu S Q and Zhang J Y. A new robust beamforming methodwith antennae calibration errors[C]. IEEE WirelessCommunications and Networking Conference, New Orleans,LA, USA, 1999, 2: 869-872.[2]Vorobyov S A, Gershman A B, and Luo Z Q. Robust adaptivebeamforming using worst case performance optimization: Asolution to the signal mismatch problem [J].IEEETransactions on Signal Processing.2003, 51(2):313-323[3]林静然, 彭启琮, 邵怀宗. 一种具有双重鲁棒性的自适应波束形成算法[J]. 电子测量与仪器学报, 2007, 21(2): 10-14.Lin Jing-ran, Peng Qi-cong, and Shao Huai-zong. A novelapproach of doubly robust adaptive beam formation[J].Journal of Electronic Measurement and Instrument, 2007,21(2): 10-14.[4]Li J, Stoica P, and Wang Z S. Doubly constrained robustcapon beamformer[J].IEEE Transactions on SignalProcessing.2004, 52(9):2407-2423[5]Robert G L and Stephen P B. Robust minimum variancebeamforming[J].IEEE Transactions on Signal Processing.2005, 53(5):1684-1696[6]Li J and Stoica P. On robust capon beamforming anddiagonal loading[J].IEEE Transactions on Signal Processing.2003, 51(7):1702-1715[7]Amir B and Yonina C E. Doubly constrained robust Caponbeamformer with ellipsoidal uncertainty sets[J].IEEETransactions on Signal Processing.2007, 55(2):753-758[8]刘聪锋, 廖桂生. 基于模约束的稳健Capon 波束形成算法[J].电子学报, 2008, 36(3): 440-445.Liu Cong-feng and Liao Gui-sheng. Robust Caponbeamformer under norm constraint[J]. Acta Electronica Sinica,2008, 36(3): 440-445.[9]林静然, 彭启琮, 邵怀宗等. 最坏情况下的鲁棒自适应波束形成算法性能分析[J]. 电子学报, 2006, 34(12): 2161-2166.Lin Jing-ran, Peng Qi-cong, and Shao Huai-zong, et al..Performance analysis of the robust adaptive beamformingbased on worst-case performance optimization[J]. ActaElectronica Sinica, 2006, 34(12): 2161-2166.[10]Vincent F and Besson O. Steering vector errors and diagonalloading[J].IEE Proceedings of Radio, Sonar and Navigation.2004, 151(6):337-343[11]Li J and Stoica P. Robust Adaptive Beamforming[M]. NewJersey: John Wiley Sons, Inc., 2006: 185-188.

施引文献

资源附件(0)

访问统计