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Satellite fault diagnosis method based on predictive filter and empirical mode decomposition 被引量:8
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作者 Yi Shen Yingchun Zhang Zhenhua Wang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第1期83-87,共5页
A novel satellite fault diagnosis scheme is presented based on the predictive filter and empirical mode composition(EMD).First,the predictive filter is utilized to obtain the fault estimation,which is corrupted by n... A novel satellite fault diagnosis scheme is presented based on the predictive filter and empirical mode composition(EMD).First,the predictive filter is utilized to obtain the fault estimation,which is corrupted by noise.Then the EMD method is introduced to decompose the fault estimation into a finite number of intrinsic mode functions and extract the trend of faults for fault diagnosis.The proposed scheme has the ability of diagnosing both abrupt and incipient faults of the actuator in a satellite attitude control subsystem.A mathematical simulation is given to illustrate the effectiveness of the proposed scheme. 展开更多
关键词 satellite fault diagnosis predictive filter empirical mode decomposition(EMD).
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Analysis of Some Characteristics of the Fault Activities in Eastern China by Satellite Images
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作者 Xie Guanglin Institute of Seismology,State Seismological Bureau 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 1991年第4期357-369,457-458,共15页
Active faults have special electromagnetic effect and remote sensing characteristics, and exhibit unique im-agery marks in satellite images. A comprehensive comparison of images of active faults in eastern China and a... Active faults have special electromagnetic effect and remote sensing characteristics, and exhibit unique im-agery marks in satellite images. A comprehensive comparison of images of active faults in eastern China and ananalysis of geologic and geomorphic data can tell us some characteristics of fault activity in the area during theneotectonic period: 1) The fault activities of the north-south tectonic zone, North China and Taiwan werestronger than those of southeastern and northeastern China; 2) the faulting in the north-south tectonic zone,North China and Taiwan has continued up to now, and most of the fault activites in southeastern andnorth-eastern China have become weaker since the Middle Pleistocene; 3) the activity is unsteady in time, mostbeing intermittent, or episodic, i.e. alternately strong and weak; 4) most active faults of a definite size can be di-vided into several segments which somewhat differ from each other in the characteristics of the activity. 展开更多
关键词 Analysis of Some Characteristics of the Fault Activities in Eastern China by satellite Images
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