Back to Search
Start Over
航空重力向下延拓的多参数正则化方法.
- Source :
-
Geomatics & Information Science of Wuhan University . Jul2020, Vol. 45 Issue 7, p956-973. 9p. - Publication Year :
- 2020
-
Abstract
- To overcome the ill-posed problem of downward continuation for airborne gravity data, the paper proposes an alternative multi-parameter regularization method. The algorithm for selecting the regularization is proposed based on the minimization of mean squares error (MSE).In addition, the comparative analysis of the L-curve and generalized eross-validation(GCV) method of selecting the Tikhonov regularization parameter is conducted. Under of MSE, the condition that the multi-parameter regularization method is superior to the least-squares is given. By making using of the EGM2008 earth gravity model, the simulation experiment is performed. The numerical results show that the multi-parameter regularization method can guarantee the reliability and stability of downward continuation. And the multi-parameter regularization method shows the better performance than the general Tikhonov regularization method so that the feasibility of multiparameter regularization method in downward continuation for airborne gravity data is demonstrated. [ABSTRACT FROM AUTHOR]
Details
- Language :
- Chinese
- ISSN :
- 16718860
- Volume :
- 45
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Geomatics & Information Science of Wuhan University
- Publication Type :
- Academic Journal
- Accession number :
- 144683819
- Full Text :
- https://doi.org/10.13203/j.whugis20180335