ULF地球物理信号偏振状态的数字处理
DIGITAL PROCESSING OF THE POLARIZATION STATE OF GEOPHYSICAL ULF SIGNALS
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摘要: 信号的偏振状态可以用来研究信号的物理属性和传播介质特性。本文利用滑动窗平滑估值方法,将输入两正交信号分量作为线性基上的复信号进行数字处理,求取偏振参量;这样就避免了同时考虑信号分量相位和幅度所带来的不便,达到偏振分析的目的。本文还讨论了偏振度概念及其在多分量信号相关处理中的作用。
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关键词:
- ULF信号; 偏振状态; 数字处理
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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