Nonlinear total least-squares variance component estimation for GM(1,1) model

The solution of the grey model (GM(1,1) model) generally involves equal-precision observations, and the (co)variance matrix is established from the prior information. However, the data are generally available with unequal-precision measurements in reality. To deal with the errors of all observations...

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Bibliographic Details
Main Authors: Leyang Wang, Jianqiang Sun, Qiwen Wu
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2021-05-01
Series:Geodesy and Geodynamics
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1674984721000318