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On the Potential of Least Squares Response Method for the Calibration of Superconducting Gravimeters
Joint Authors
El-Rabbany, Ahmed
Abd El-Gelil, Mahmoud
Pagiatakis, Spiros
Source
International Journal of Geophysics
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-04
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
One of the most important operating procedures after the installation of a superconducting gravimeter (SG) is its calibration.
The calibration process can identify and evaluate possible time variability in the scale factor and in the hardware anti-aliasing filter response.
The SG installed in Cantley, Canada is calibrated using two absolute gravimeters and the data are analysed in the time and frequency domains to estimate the SG scale factor.
In the time domain, we use the weighted linear regression method whereas in the frequency domain we use the least squares response method.
Rigorous statistical procedures are applied to define data disturbances, outliers, and realistic data noise levels.
Using data from JILA-2 and FG5-236 separately, the scale factor is estimated in the time and frequency domains as −78.374±0.012 μGal/V and −78.403±0.075 μGal/V, respectively.
The relative accuracy in the time domain is 0.015%.
We cannot identify any significant periodicity in the scale factor.
The hardware anti-aliasing filter response is tested by injecting known waves into the control electronics of the system.
Results show that the anti-aliasing filter response is stable and conforms to the global geodynamics project standards.
American Psychological Association (APA)
Abd El-Gelil, Mahmoud& Pagiatakis, Spiros& El-Rabbany, Ahmed. 2012. On the Potential of Least Squares Response Method for the Calibration of Superconducting Gravimeters. International Journal of Geophysics،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-495071
Modern Language Association (MLA)
Abd El-Gelil, Mahmoud…[et al.]. On the Potential of Least Squares Response Method for the Calibration of Superconducting Gravimeters. International Journal of Geophysics No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-495071
American Medical Association (AMA)
Abd El-Gelil, Mahmoud& Pagiatakis, Spiros& El-Rabbany, Ahmed. On the Potential of Least Squares Response Method for the Calibration of Superconducting Gravimeters. International Journal of Geophysics. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-495071
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-495071