一种新的相干信号波束形成方法
doi: 10.3724/SP.J.1146.2006.01632
A New Beamformer for Coherent Signals
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摘要: 存在相干信号情况下的常规波束形成器,由于相干信号的相对信号强度估计误差、天线阵导向矢量扰动误差和采样协方差矩阵估计误差的存在,会产生波束畸变及信号相消,输出信干噪比会明显下降。该文提出一种基于量子信号处理中内积成形算法的波束形成器,并分析了波束形成器的性能,通过仿真比较验证了新的波束形成器的有效性。分析和实验表明,新波束形成器作为一种鲁棒性波束形成器,在上述应用环境中,通过适当调整影响因子,可以得到比传统波束形成器更稳定的性能输出。Abstract: In the process of the beamforming for the coherent signals, because of the estimation error of the coherent signal energy and the estimation error of covariance matrix R, and perturbation error on the steering vector, the output SINR of beamformer drops badly. In this paper a new beamformer is presented based on the LS shaping from quantum signal processing. As a robust beamformer it shows the good performance in the circumstance discussed above. Analysis and simulations are given to prove the efficiency and validity of the new beamformer.
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张贤达，保铮. 通信信号处理. 北京：国防工业出版社，2000年12 月，第11 章.[2]Van Veen B D and Buckley K M. Beamforming: A versatileapproach to spatial filtering [J]. IEEE ASSP Magazine, 1988,5(2): 4-24.[3]Wax M and Anu Y. Performance analysis of the minimumvariance beamformer [J].IEEE Trans. on Signal Processing.1996, 44(4):928-937[4]Bresler Y, Reddy V U, and Kailath T. Optimum beamformingfor coherent signal and interferences [J].IEEE Trans. onAcoustics, Speech, Signal Processing.1988, 36(6):833-843[5]王安义，保铮，张林让. 阵列估计误差和扰动误差引起方向图畸变的校正[J]. 西安电子科技大学学报，1999, 26(5): 614-618.Wang An-yi, Bao Zheng, and Zhang Lin-rang. Remedies ofthe estimation errors and perturbation errors. Journal ofXidian University, 1999, 26(5): 614-618.[6]Chou C and L ee J H. Robust adaptive array beamformingunder steering vector errors [J]. IEEE Trans. on AP, 1997,45(1): 169-175.[7]Eldar Y C and Oppenheim A V. Quantum signal processing[J]. IEEE Signal Processing Magazine, 2002, 19(6): 12-32. -
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