基于数字信号处理技术的地磁日变数据处理方法研究
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摘要
地磁日变数据是地球的主要地球物理学特征。当地震发生时,经常伴随着剧烈的地磁变化。文中将FFT这一数字信号处理算法应用于地磁日变数据处理,并通过中国西部实测地磁日变数据处理实验验证,其精度高于一般的多项式拟合法。
Geomagnetic diurnal variation is an important geophysical feature on the earth.When the earthquake happens,the evident magnetic change always turns up.A new method based on digital signal processing technology is presented.The method is used to process the magnetic data of a magnetic diurnal variation station in the western part of China,as aresult of which the precision shows higher than the polynomial method.
Geomagnetic diurnal variation is an important geophysical feature on the earth.When the earthquake happens,the evident magnetic change always turns up.A new method based on digital signal processing technology is presented.The method is used to process the magnetic data of a magnetic diurnal variation station in the western part of China,as aresult of which the precision shows higher than the polynomial method.
引文
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[5]Gu Zuowen,An Zhenchang,Gao Jintian,Zhan Zhijia,Yao Tongqi,Han Wei,Chen Bin.Computation and A-nalysis of the Geomagnetic Field Model In China and ITSAdjacent Area for 2003.Acta Seismologica Sinica[J].28(2):141-149.
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[8]John J Leonard,Andrew Bennett.Autonimous Under-water Vehicle Navigation.MIT Marine Robotics Labot-ics Laboratory Technical Memorandum[J].1998,(1):1-11.
[2]AN Zhen-chang,XU Yuan-fang,WANG Yue-hua.Deri-vation and analysis of the main geomagnetic field modelsin China for 1950-1980.Chinese Journal of Geophysics[J].1991,34(5).
[3]AN Zhen-chang.Review of Geomagnetic Surveys,Geo-magnetic Charts and Geomagnetic Field Models in China.Chinese Journal of Geophysics[J].45:189-196.
[4]Gao Jintian,An Zhenchang,Gu Zuowen,Han Wei,ZhanZhijia,Yao Tongqi.Selections of the Geomagnetic Nor-mal Field and Calculations of the Geomagnetic Anoma-lous Field.Chinese Journal of Geophysics.48(1):51-62.
[5]Gu Zuowen,An Zhenchang,Gao Jintian,Zhan Zhijia,Yao Tongqi,Han Wei,Chen Bin.Computation and A-nalysis of the Geomagnetic Field Model In China and ITSAdjacent Area for 2003.Acta Seismologica Sinica[J].28(2):141-149.
[6]Behrooz Kamgar-Parsi,et al.Toward an auto-mated sys-tem for a correctly registered bathym etric ch art.IEEEJournal of Oceanic Engineering[J].1989,14(4):314-325.
[7]Zhang Z.Iterative point matching for registration of free-form curves and surfaces.International Journal of Com-puter Vision[J].1994,13(2):116-152.
[8]John J Leonard,Andrew Bennett.Autonimous Under-water Vehicle Navigation.MIT Marine Robotics Labot-ics Laboratory Technical Memorandum[J].1998,(1):1-11.
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