ULF地球物理信號偏振狀態(tài)的數(shù)字處理
DIGITAL PROCESSING OF THE POLARIZATION STATE OF GEOPHYSICAL ULF SIGNALS
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摘要: 信號的偏振狀態(tài)可以用來研究信號的物理屬性和傳播介質(zhì)特性。本文利用滑動窗平滑估值方法,將輸入兩正交信號分量作為線性基上的復(fù)信號進行數(shù)字處理,求取偏振參量;這樣就避免了同時考慮信號分量相位和幅度所帶來的不便,達到偏振分析的目的。本文還討論了偏振度概念及其在多分量信號相關(guān)處理中的作用。
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關(guān)鍵詞:
- ULF信號; 偏振狀態(tài); 數(shù)字處理
Abstract: Evaluation by running window smoothing is used for the digital pro-cessing of the polarization of geophysical ULF signals. The observed signals are resolved into two orthogonal complex components so that it is no longer necessary to consider the phase and amplitude of the signals simultaneously. -
Glangeaud F. Planet Space Sci., 1982, 30(12): 1249-1258.[2]Glangeaud F. Journal of Atmospheric and Terrestrial Physics, 1981, 43(9): 981-998.[3]Samson J C, Olson J V. J. Geophys. Res, 1981.46( 13 ): 1423-1431.[4]Lacoume J L, Latombe C. Analyse Interespectrale, Seme Colloque GRETST 311-318. Nice, FRANCE: 1981. -
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