Results 11 to 20 of about 1,922,795 (290)

Feasibility of Replacing the Range Doppler Equation of Spaceborne Synthetic Aperture Radar Considering Atmospheric Propagation Delay with a Rational Polynomial Coefficient Model [PDF]

open access: yesSensors, 2020
Usually, the rational polynomial coefficient (RPC) model of spaceborne synthetic aperture radar (SAR) is fitted by the original range Doppler (RD) model.
Shasha Hou   +4 more
doaj   +2 more sources

Coefficient functions of the Ehrhart quasi-polynomials of rational polygons

open access: yes, 2008
5 pages, 2 figures, 2008 International Conference on Information Theory and Statistical Learning (ITSL'08), held in Las Vagas, NV, July ...
McAllister, T.B.
openaire   +5 more sources

Polynomial cubic splines with tension properties [PDF]

open access: yes, 2010
In this paper we present a new class of spline functions with tension properties. These splines are composed by polynomial cubic pieces and therefore are conformal to the standard, NURBS based CAD/CAM ...
Costantini, P.   +2 more
core   +4 more sources

Structured Low-rank Approximation as a Rational Function Minimization [PDF]

open access: yes, 2012
Many problems of system identification, model reduction and signal processing can be posed and solved as a structured low-rank approximation problem (SLRA).
Markovsky, Ivan, Usevich, Konstantin
core   +2 more sources

Rational approximation of discrete data with asymptomatic behaviour [PDF]

open access: yes
This thesis is concerned with the least-squares approximation of discrete data that appear to exhibit asymptotic behaviour. In particular, we consider using rational functions as they are able to display a number of types of asymptotic behaviour.
Cooper, Philip
core   +4 more sources

Sum of Squares Decompositions of Polynomials over their Gradient Ideals with Rational Coefficients

open access: yesSIAM Journal on Optimization, 2023
Assessing non-negativity of multivariate polynomials over the reals, through the computation of {\em certificates of non-negativity}, is a topical issue in polynomial optimization. This is usually tackled through the computation of {\em sums-of-squares decompositions} which rely on efficient numerical solvers for semi-definite programming.
Magron, Victor   +2 more
openaire   +3 more sources

Superiority of legendre polynomials to Chebyshev polynomial in solving ordinary differential equation

open access: yesJournal of Applied Sciences and Environmental Management, 2006
In this paper, we proved the superiority of Legendre polynomial to Chebyshev polynomial in solving first order ordinary differential equation with rational coefficient.
FO Akinpelu, LA Adetunde, EO Omidiora
doaj   +1 more source

Estimation and improvement in the geolocation accuracy of rational polynomial coefficients with minimum GCPs using KOMPSAT-3A

open access: yesGIScience & Remote Sensing, 2020
In this paper, we propose a method to regenerate Rational Polynomial Coefficients (RPCs) using KOMPSAT-3A imagery and to reduce the geolocation error using minimum ground control points (GCPs).
Namhoon Kim   +3 more
doaj   +1 more source

RPC STEREO PROCESSOR (RSP) – A SOFTWARE PACKAGE FOR DIGITAL SURFACE MODEL AND ORTHOPHOTO GENERATION FROM SATELLITE STEREO IMAGERY [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Large-scale Digital Surface Models (DSM) are very useful for many geoscience and urban applications. Recently developed dense image matching methods have popularized the use of image-based very high resolution DSM.
R. Qin
doaj   +1 more source

Diverse analytical wave solutions of plasma physics and water wave equations

open access: yesResults in Physics, 2022
In plasma physics and water waves, the Gilson-Pickering equation is an important unidirectional wave propagation model. A large number of analytic wave solutions have been established in the form of hyperbolic, trigonometric, exponential, and rational ...
S.M. Rayhanul Islam   +3 more
doaj   +1 more source

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