Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Progress in Geophysics》 2007-05
Add to Favorite Get Latest Update

A new method of plane magnetic field fitting based on orthogonal polynomials

GAO Jun-ji1,LIU Da-ming1,YAO Qiong-hui1,WANG Hua-zheng2(1.Institute.Of Electrical and Info Eng.,Naval Univ.of Engineering,Wuhan 430033,China;2.Institute.Of electron,Shanghai Jiaotong University,Shanghai 200000,China)  
The premise that improves the magnetic-concealed ability of modern naval vessels is to understand and master the space magnetic distributing of the vessels,and the geomagnetism distributing where the vessels are lying.Aiming at the problem of low precision in magnetic field interpolating and fitting,and the problem of gridding,a method of plane magnetic field fitting based on orthogonal polynomials was brought forward.Differing from the fitting by orthogonal polynomial of one dimension,this method was based on the generic maturity polynomial groups of two dimensions,and the generic maturity polynomial groups of two dimensions were orthogonalized based on the method of Gram-Schmidt.So the numerical base functions were gotten,and the fitting of the magnetic field with the base functions was carried out.For the problem of subsection in fitting,the concept of compact support was put forward,through testing with ship model,simulating and comparing with the Lagrange fitting of two dimensions,it is found that this method has the virtues of high precision and could reflect the distributing of plane magnetic field exactly.
【CateGory Index】: U674.701
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
Chinese Journal Full-text Database 2 Hits
1 ZHONG Wei,YANG Bao-jun,ZHANG Zhi(College of GeoExploration Science and Technology,Jilin University,Changchun 130026,China);Research on Application of Polynomial Fitting Technique in Highly noisy Seismic Data[J];Progress in Geophysics;2006-01
2 ZENG Qing-hong, LU De-tang (Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230027, China);Curve and Surface Fitting Based on Moving Least-Squares Methods[J];Journal of Engineering Graphics;2004-01
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 ZHAO Xue-ping YANG Bao-jun (Department of Geophysics, Jilin University, Changchun 130026,China);CA's Finite Deep Potential Trough Model of the Elastic Wave Propagational Mechanism in Solid Medium[J];Progress In Geophysics;2002-03
2 YANG BAOJUN1\ LI QINXUE2\ TANG JIANREN2\ LIU CAI1\ WANG JIANMIN2\ WANG ZHAOHU2 LI ZHANLIN2\ FENG XUAN1\ YU PING1\ LI SHIZHE1\ LIU YANG1\ FU LEI2 1 Departmant of Geophysics, Jilin University, Changchun 130026, China 2 Institute of Geophysical Exploration, Daqing Petroleum Administration Bureau, Daqing 163357, China;THE FORM AND THREE-INSTANTANEOUS INFORMATION OF THE SEISMIC REFLECTION MOHO IN SONGLIAO BASIN AND GEOLOGICAL INTERPRETATION[J];Chinese Journal of Geophysics;2003-03
3 LI Yue~(1),YANG Bao-Jun~(2),ZHAO Xue-Ping~(2),ZHANG Ming~(1),LIN Hong-Bo~(1)1 Department of Information Engineering,Jilin University,Changchun 130020,China2 Department of Geophysics,Jilin Univeristy,Changchun 130026,China;An algorithm of chaotic vibrator to detect weak events in seismic prospecting records[J];Chinese Journal of Geophysics;2005-06
4 Peng Fangyu Zhou Ji Zhou Yanhong Zhou Yunfei (Huazhon University of Science and Technology );RESEANCH ON LEAST SQUARES BASED ALGORITHM FOR FREE FORM SURFACES DESIGN[J];JOURNAL OF ENGINEERING GRAPHICS;1999-03
5 Wang Yuanheng Yang Wenshan (Dept.of Math., Zhejiang Normal University, Jinhua Zhejiang 321004);A NEW ALGORITHM OF THE BEST APPROXIMATION BY USING ORTHOGONAL METHOD[J];Numerical Mathematics A Journal of Chinese Universities;2004-02
6 Li Kunpeng, Liu Yexin, Li Yanda Department of Automation, Tsinghua University;State Key Laboratory of Intelligent Technologh and Systems, Beijing\ 100084;Improving seismic section resolution by wavelet transform and polynomial fitting[J];JOURNAL OF TSINGHUA UNIVERSITY(SCIENCE AND TECHNOLOGY);1997-03
7 Yu Shoupeng et al;Improvement of signal-to-noise ratio of stack section using polynomial fitting of seismic signals[J];Oil Geophysical Prospecting;1988-02
8 Wan Haitao(Method Institute,Geophysical Research Institute,Bureau of Oil Geophysical Prospecting,P.O.Box 11-1,Zhuozhou City,Hebei Province, Postcode:072750)Su Yongchang and Yu Shoupeng;Improving the signal/noise ratio of stacked 3-D seismic data by polynomial fitting method,and the trace interpolation[J];Oil Geophysical Prospecting;1994-02
9 Zhang Yu and Zhang Guanquan.( National Laboratory of Scientific & Engineering Computation, Research Institute of Numerical Mathemat-ics and scientific-Engineering Computation,Chinese Academy of Sciences,Beijing City, 100080);High-frequency random noise elimination using wavelet transform[J];OIL GEOPHYSICAL PROSPECTING;1997-03
10 Chen Biyuan and Ma Zaitian. (Research Institute,Geophysical Exploration,Corporation,Daqing Petroleum Administration,Hei- longjiang Province, 163357);Recursive noise elimination in f-x domain and spectrum equalization under dominant frequency restriction[J];OIL GEOPHYSICAL PROSPECTING;1997-04
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved