Results 21 to 30 of about 4,554 (193)

Fast cubature of volume potentials over rectangular domains [PDF]

open access: yes, 2013
In the present paper we study high-order cubature formulas for the computation of advection-diffusion potentials over boxes. By using the basis functions introduced in the theory of approximate approximations, the cubature of a potential is reduced to ...
Lanzara, Flavia   +2 more
core   +3 more sources

Numerical hyperinterpolation over nonstandard planar regions [PDF]

open access: yes, 2017
We discuss an algorithm (implemented in Matlab) that computes numerically total-degree bivariate orthogonal polynomials (OPs) given an algebraic cubature formula with positive weights, and constructs the orthogonal projection (hyperinterpolation) of a ...
Sommariva, Alvise, Vianello, Marco
core   +1 more source

A Federated Derivative Cubature Kalman Filter for IMU-UWB Indoor Positioning

open access: yesSensors, 2020
The inertial measurement unit and ultra-wide band signal (IMU-UWB) combined indoor positioning system has a nonlinear state equation and a linear measurement equation.
Chengyang He, Chao Tang, Chengpu Yu
doaj   +1 more source

Markov cubature rules for polynomial processes [PDF]

open access: yes, 2019
We study discretizations of polynomial processes using finite state Markov processes satisfying suitable moment matching conditions. The states of these Markov processes together with their transition probabilities can be interpreted as Markov cubature ...
Filipović, Damir   +2 more
core   +2 more sources

Electric potential and field calculation of charged BEM triangles and rectangles by Gaussian cubature [PDF]

open access: yes, 2016
It is a widely held view that analytical integration is more accurate than the numerical one. In some special cases, however, numerical integration can be more advantageous than analytical integration.
Glück, Ferenc, Hilk, Daniel
core   +3 more sources

Unmanned Aerial Vehicle Target Tracking Based on OTSCKF and Improved Coordinated Lateral Guidance Law

open access: yesISPRS International Journal of Geo-Information, 2022
This paper proposes an approach of target tracking of a ground target for UAVs using Optimal Two-Stage Cubature Kalman Filter and Improved Coordinated Lateral Guidance Law.
Wei Jiang, Yongxi Lyu, Jingping Shi
doaj   +1 more source

Scaled boundary cubature scheme for numerical integration over planar regions with affine and curved boundaries [PDF]

open access: yesComputer Methods in Applied Mechanics and Engineering, 2021
This paper introduces the scaled boundary cubature (SBC) scheme for accurate and efficient integration of functions over polygons and two-dimensional regions bounded by parametric curves. Over two-dimensional domains, the SBC method reduces integration over a region bounded by $m$ curves to integration over $m$ regions (referred to as curved triangular
Eric B. Chin, N. Sukumar
openaire   +3 more sources

Mixed-Degree Cubature H∞ Information Filter-Based Visual-Inertial Odometry

open access: yesApplied Sciences, 2018
Visual–inertial odometry is an effective system for mobile robot navigation. This article presents an egomotion estimation method for a dual-sensor system consisting of a camera and an inertial measurement unit (IMU) based on the cubature information ...
Chunlin Song, Xiaogang Wang, Naigang Cui
doaj   +1 more source

Subperiodic trigonometric subsampling: A numerical approach [PDF]

open access: yes, 2017
We show that Gauss-Legendre quadrature applied to trigonometric poly- nomials on subintervals of the period can be competitive with subperiodic trigonometric Gaussian quadrature. For example with intervals correspond- ing to few angular degrees, relevant
Sommariva, Alvise, Vianello, Marco
core   +1 more source

A PERFORMANCE EVALUATION OF TRAPEZOIDAL VARIANTS FOR NUMERICAL CUBATURE

open access: yesJOURNAL OF MECHANICS OF CONTINUA AND MATHEMATICAL SCIENCES, 2021
In this work, double integration cubature schemes of Trapezoid type have been focused. Recently, some derivative-based Trapezoid-type schemes have been proposed in literature incorporating derivatives at means of the limits of integration. We carry out the exhaustive performance evaluation of the existing closed Newton-Cotes Trapezoidal (CNCT) double ...
openaire   +2 more sources

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