未知接收机通道特性下的信号空间特征估计算法

王激扬; 黄佑勇; 陈天麒

未知接收机通道特性下的信号空间特征估计算法

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出版历程
- 收稿日期: 1999-07-22
- 修回日期: 1999-11-09
- 刊出日期: 2001-08-19

AN ALGORITHM FOR ESTIMATING SPATIAL SIGNATURE OF SIGNALS WITH GAINS AND PHASES OF SENSORS UNKNOWN

摘要

摘要: 该文用均匀线阵研究了未知接收机通道特性下信号空间特征(=2sin/)的估计问题。利用均匀线阵的冗余结构,本文给出了基于信号子空间的ESPRIT-Like算法,得到了一个信号空间特征和通道特性的近似解。ESPRIT-Like算法对信号空间特征估计具有较好的稳健性;与B.Friedlander,V.C.Soon等人(1994)提出的其它迭代算法相比,ESPRIT-Like,算法具有计算量小的优点。数值仿真结果证实了本文算法的有效性并评价了算法的性能。
- ESPRIT-Like算法; 空间特征; 通道特性
Abstract: This paper discusses the problem of estimating the spatial signature of signals under the gains and phases of sensors unknown with a uniform linear array (ULA). It is utilized the redundant structure of the ULA and subspace-based ESPRIT-like algorithm is introduced to obtain, a closed form solution for the spatial signature of signals, and the gains and phases of sensors is presented. The major advantage of the proposed ESPRIT-like algorithm is its low computational burden compared with the other iterative methods and its robustness Compared with ESPRIT algorithm. Numerical simulation is presented to test the validity and the performance of this algorithm.

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参考文献(1)

B. Friedlander, A. J. Weiss, Effects of model errors on waveform estimation using the MUSIC algorithm, IEEE Trans. on SP, 1994, 42(1), 147-155.[2]A. Swindlehurst, T. Kailath, Performance analysis of subspace-based methods in the presence ofmodel errors, Part II, Multidimensional algorithms, IEEE Trans. on SP, 1993, 41(9), 882-2890.[3]M Wax, Y. Anu, Performance analysis of the minimum variance beamformer in the presence ofsteering vector errors, IEEE Trans. on SP, 1996, 44(4), 938-947.[4]J. Yang, A. Swindlehurst, The effects of array calibration errors on DF-based signal copy perfor-mance, IEEE Trans. on SP, 1995, 43(11), 2724-2732.[5]B. Friedlander, A. J. Weiss, Eigenstructure methods for direction finding with sensor gain andphase uncertainties. In Proc. ICASSP, 1988, 2681-2684.[6]M. Virberg, A. Swindlehurst, A Bayesian approach to anto-calibration in parametric array signalprocessing, IEEE Trans. on SP, 1994, 42(12), 3495-3507.[7]A.J. Weiss, B. Friedlander, Almost blind steering vector estimation using second-ordermoment, IEEE Trans. on SP, 1996, 44(4), 2724-2732.[8]V.C. Soon, L. Tong, Y. F. Huang, R. Liu, A subspace method for estimating sensor gains andphases, IEEE Trans. on SP, 1994, 42(4), 973-976.[9]D.R. Fuhrmann, Estimation of sensor gain and phase. IEEE Trans. on SP, 1994, 42(1), 77-87.[10]J. Gunther, A. Swindlehurst, Algoritthn for blind equalization with tnultiple antennas based onfrequency domain subspaces, In Proc. ICASSP, 1996, 2419-2422.[11]R. Roy, T. Kailath, ESPRIT-estimation of signal parameters via rotational invariance techniques,IEEE Trans. on ASSP, 1989, 37(7), 984-995.

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