Abstract The study of several gravity field interpolation algorithms indicates that there is a large interpolation error in the high frequency regions of gravity field| furthermore, we can achieve increased interpolation accuracy for a small price by supplementing measuring points in the high frequency region. Wavelet analysis can perceive the spatial frequency information of a gravity field. This paper proposes a strategy to effectively improve the interpolation accuracy of a gravity map. Our strategy, which takes the wavelet detail information of gravity reference map with a certain resolution as the transition probability, uses a random sampling scheme to add measuring points in the high frequency region of a gravity field. The contrast with the scheme of increasing measuring points distributed uniformly shows that, in the case of achieving roughly the same degree of improvement of interpolation precision, the strategy uses fewer measuring points, and has a smaller extreme value of interpolation error. It therefore has higher efficiency.
LIU Fanming,YAO Jianqi,JING Xin. A Strategy for Upgrading the Interpolation Accuracy of Gravity Map Based on Wavelet Analysis[J]. jgg, 2015, 35(6): 948-952.
LIU Fanming,YAO Jianqi,JING Xin. A Strategy for Upgrading the Interpolation Accuracy of Gravity Map Based on Wavelet Analysis[J]. jgg, 2015, 35(6): 948-952.
