Results 11 to 20 of about 2,125 (287)

New Possibilities and Applications of the Least Squares Collocation Method

open access: yesEPJ Web of Conferences, 2018
Least squares collocation method (LSC) is a versatile numerical method for solving boundary value problems for PDE. The present article demonstrates the abilities of LSC to solve various problems – in particular, calculations of bending of isotropic ...
Shapeev Vasiliy   +3 more
doaj   +3 more sources

Least Squares Collocation Alternative to Helmert’s Transformation with Hausbrandt’s Post – Transformation Correction

open access: yesReports on Geodesy and Geoinformatics, 2015
The paper presents a least squares collocation - based alternative to Helmert’s transformation with Hausbrandt’s post – transformation correction. The least squares collocation is used as an exact predictor i.e.
Ligas Marcin, Banasik Piotr
doaj   +3 more sources

Least-Squares Collocation With Integer Parameters [PDF]

open access: yesArtificial Satellites, 2006
The prediction of spatially and/or temporal varying variates based on observations of these variates at some locations in space and/or instances in time, is an important topic in the various spatial and Earth sciences disciplines. This topic has been extensively studied, albeit under different names.
Teunissen, Peter
openaire   +3 more sources

The connection of an old geodetic datum with a new one using Least Squares Collocation: The Greek case

open access: yesContributions to Geophysics and Geodesy, 2017
In the present paper we are dealing with the problem of the connection of two local geodetic datums in which the classical transformation procedures fail to give sufficient solution.
Dimitrios AMPATZIDIS   +1 more
doaj   +2 more sources

Total Least-Squares Collocation: An Optimal Estimation Technique for the EIV-Model with Prior Information

open access: yesMathematics, 2020
In regression analysis, oftentimes a linear (or linearized) Gauss-Markov Model (GMM) is used to describe the relationship between certain unknown parameters and measurements taken to learn about them.
Burkhard Schaffrin
doaj   +2 more sources

On the uncertainty of height anomaly differences predicted by least-squares collocation

open access: yesJournal of Geodetic Science, 2020
A network of pointwise available height anomalies, derived from levelling and GPS observations, can be densified by adjusting a gravimetric quasigeoid using least-squares collocation.
Mysen E.
doaj   +2 more sources

Volterra Black-Box Models Identification Methods: Direct Collocation vs. Least Squares

open access: yesMathematics
The Volterra integral-functional series is the classic approach for nonlinear black box dynamical system modeling. It is widely employed in many domains including radiophysics, aerodynamics, electronic and electrical engineering and many others ...
Denis Sidorov   +3 more
doaj   +2 more sources

Modeling of Inhomogeneous Spatio-Temporal Signals by Least Squares Collocation

open access: yes, 2023
AbstractThrough inverse modeling and adjustment techniques, the geodesists try to derive mathematical models from their measurements to get a better understanding of various processes in the system Earth. Sophisticated deterministic and stochastic models are developed to achieve the best possible reflection of reality and the remaining uncertainty.The ...
Schuh, Wolf-Dieter   +3 more
openaire   +2 more sources

Generalized method of least squares collocation [PDF]

open access: yesApplications of Mathematics, 1982
summary:Two general solutions of the collocation problem of physical geodesy are given. Their mutual equivalency and equivalency of them to the classical solution in the regular case are proved.
Kubackova, Ludmila, Kubacek, Lubomir
openaire   +2 more sources

A High-Resolution Gravimetric Geoid Model for Kuwait Using the Least-Squares Collocation

open access: yesFrontiers in Earth Science, 2022
A new gravimetric geoid model, the KW-FLGM2021, is developed for Kuwait in this study. This new geoid model is driven by a combination of the XGM2019e-combined global geopotential model (GGM), terrestrial gravity, and the SRTM 3 global digital elevation ...
Hamad Al-Ajami   +4 more
doaj   +1 more source

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