A New Method to Build Covariance of Gravity Anomaly Along with its Simulation Experience

Jianbo Wang*, 1, 2, jinyun Guo1, 2, Youge Xie1, 2
1 College of Geodesy and Geomatics, Shandong University of Science and Technology, Qingdao 266590, China
2 Key Laboratory of Surveying and Mapping Technology on Island and Reef of NASMG, Qingdao 266590, China

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© 2015 Wang et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


In this paper , we proposed a new method to build covariance matrix of gravity anomaly based on the spherical harmonic expansion of gravity anomaly , and then combined with the measured gravity data we can realize the fast and high precision interpolation and extrapolation of gravity anomaly according to the principle of least squares and the remove-compute-restore technique. The feasibility of this method is proved through the simulation experiment.

Keywords: Covariance matrix of gravity anomaly, least squares collocation, the remove-compute-restore technique.