估計(jì)相干源到達(dá)方位角的雙向空間平滑技術(shù)
ON TWO-DIRECTION SPATIAL SMOOTHING FOR ESTIMAT- ING ANGLE-OF-DIRECTION OF COHERENT SIGNALS
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摘要: 本文在Evans的空間平滑預(yù)處理技術(shù)基礎(chǔ)上,提出了雙向空間平滑預(yù)處理技術(shù),并證明了后者在去相關(guān)、孔徑的有效利用率以及孔徑尺寸一定時(shí),陣列最多可分辨的相干源數(shù)目方面均優(yōu)于前者。計(jì)算機(jī)仿真結(jié)果驗(yàn)證了上述結(jié)論。
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關(guān)鍵詞:
- 陣列天線; 相干源; 雙向空間平滑技術(shù)
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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