估计相干源到达方位角的双向空间平滑技术
ON TWO-DIRECTION SPATIAL SMOOTHING FOR ESTIMAT- ING ANGLE-OF-DIRECTION OF COHERENT SIGNALS
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摘要: 本文在Evans的空间平滑预处理技术基础上,提出了双向空间平滑预处理技术,并证明了后者在去相关、孔径的有效利用率以及孔径尺寸一定时,阵列最多可分辨的相干源数目方面均优于前者。计算机仿真结果验证了上述结论。
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关键词:
- 阵列天线; 相干源; 双向空间平滑技术
Abstract: Based on Evans spatial smoothing preprocessing scheme, a new approach aalled two-direction spatial smoothing preprocessing method is presented. It is proved that the decor-relation, the effective aperture and the maximum number of distinguishable coherent signals (when array size is given) of the new method are better than those of the Evans method. Simulation results give a comparison between the eigenvector spectrums produced by the two methods. -
W. Gabriel, Proc. IEEE 68(1980), 654-656.[2]R. Schmid; Proc. RADC, Spectrum Estimation Workshop, Rome, N Y., Oct., 1979.[3]T. S. Durrani, K. C. Sharman, IEE Proc. F and H, 130(1983) 1, 22-28.[4]T. J. Evans, J. R. Johnson, D. F. Sun, Proc. 1st ASSP Workshop Spectral Estimation,[5]Canada, 1981.[6]T. J. Shan, M. Wax T. Kailath, IEEE Trans. On ASSP, ASSP-33 (1985)4, 806-811. -
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