Results 21 to 30 of about 2,125 (287)
Improving the Accuracy of TanDEM-X Digital Elevation Model Using Least Squares Collocation Method
Remote Sensing, 2023 The TanDEM-X Digital Elevation Model (DEM) is limited by the radar side-view imaging mode, which still has gaps and anomalies that directly affect the application potential of the data. Many methods have been used to improve the accuracy of TanDEM-X DEM,
Xingdong Shen, Cui Zhou, Jianjun Zhu
doaj +1 more source
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023 A large variety of new methods are being developed for fast and efficient solutions of nonlinear boundary value problems. Some of these methods are, Adomian decomposition (ADM), differential transform (DTM), least squares vector machines (LSSVMM), and ...
Hasan Ömür Özer +3 more
doaj +1 more source
Alexandria Engineering Journal, 2018 The current work presents a computational scheme to solve weakly singular integral equations of the second kind. The discrete collocation method in addition to the moving least squares (MLS) technique established on scattered points is utilized to ...
Pouria Assari
doaj +1 more source
Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean
Journal of Geodetic Science, 2021 The coastal marine gravity field is not well modelled due to poor data coverage. Recent satellite altimeters provide reliable altimetry observations near the coast, filling the gaps between the open ocean and land.
Abulaitijiang Adili +3 more
doaj +1 more source
A Kernel-Based Least-Squares Collocation Method for Surface Diffusion
SIAM Journal on Numerical Analysis, 2023 There are plenty of applications and analysis for time-independent elliptic partial differential equations in the literature hinting at the benefits of overtesting by using more collocation conditions than the number of basis functions. Overtesting not only reduces the problem size, but is also known to be necessary for stability and convergence of ...
Meng Chen 0010 +2 more
openaire +3 more sources
$H^2$-Convergence of Least-Squares Kernel Collocation Methods [PDF]
SIAM Journal on Numerical Analysis, 2018 The strong-form asymmetric kernel-based collocation method, commonly referred to as the Kansa method, is easy to implement and hence is widely used for solving engineering problems and partial differential equations despite the lack of theoretical support.
Ka Chun Cheung +2 more
openaire +4 more sources
Applied Sciences, 2018 Due to the difficulty of obtaining relaxation modulus directly from experiments, many interconversion methods from other viscoelastic functions to relaxation modulus were developed in previous years.
Weiguang Zhang +3 more
doaj +1 more source
, 2022 In the two parts of the present note we discuss questions concerning the implementation of overdetermined least-squares collocation methods for higher index differential-algebraic equations (DAEs).
März, R., Hanke, Michael,
core +1 more source
Two covariance models in Least Squares Collocation (LSC) tested in interpolation of local topography
Contributions to Geophysics and Geodesy, 2013 Advantages and disadvantages of least squares collocation (LSC) and kriging have recently been discussed, especially as interdisciplinary research becomes popular.
Wojciech JARMOŁOWSKI +1 more
doaj +1 more source
Geodesy: General theory and methodology 2015–2018 [PDF]
Geodesy and Cartography, 2019 The summary of research activities concerning general theory and methodology performed in Poland in the period of 2015–2018 is presented as a national report for the 27th IUGG (International Union of Geodesy and Geophysics) General Assembly.
Andrzej Borkowski +2 more
doaj +1 more source