Results 61 to 70 of about 1,509,637 (194)

Improved Least Squares Phase Unwrapping Method Based on Chebyshev Filter

open access: yesApplied Sciences
Phase unwrapping of high phase noise and steep phase gradient has always been a challenging problem in interferometric synthetic aperture radar (InSAR), in which case the least squares (LS) phase unwrapping method often suffers from significant ...
Guoqing Li, Yake Li, Wenyan Liu
doaj   +1 more source

Practical inference from industrial split-plot designs. [PDF]

open access: yes
Many industrial response surface experiments are deliberately not conducted in a completely randomized fashion. This is because some of the factors investigated in the experiment are hard to change.
Goos, Peter   +2 more
core  

Performance analysis of the Least-Squares estimator in Astrometry

open access: yes, 2015
We characterize the performance of the widely-used least-squares estimator in astrometry in terms of a comparison with the Cramer-Rao lower variance bound.
Lobos, Rodrigo A.   +3 more
core   +2 more sources

Bubble-Enriched Least-Squares Finite Element Method for Transient Advective Transport

open access: yesDifferential Equations and Nonlinear Mechanics, 2008
The least-squares finite element method (LSFEM) has received increasing attention in recent years due to advantages over the Galerkin finite element method (GFEM).
Rajeev Kumar, Brian H. Dennis
doaj   +1 more source

Detection of main tidal frequencies using least squares harmonic estimation method

open access: yesJournal of Geodetic Science, 2012
In this paper the efficiency of the method of Least Squares Harmonic Estimation (LS-HE) for detecting the main tidal frequencies is investigated. Using this method, the tidal spectrum of the sea level data is evaluated at two tidal stations: Bandar Abbas
Mousavian R., Hossainali M. Mashhadi
doaj   +1 more source

A new method of weighted choice in InSAR Least Squares unwrapping

open access: yesGeodesy and Geodynamics, 2012
The decorelation phenomena such as Low-SNR radar signal, shadows and layover caused by topography etc, causes phase data discontinuous and makes the result of unwrapping phase inaccurate or completely wrong.
Liu Weike, Liu Goulin
doaj   +1 more source

Quadrature-Based Vector Fitting: Implications For H2 System Approximation

open access: yes, 2014
Vector Fitting is a popular method of constructing rational approximants designed to fit given frequency response measurements. The original method, which we refer to as VF, is based on a least-squares fit to the measurements by a rational function ...
Beattie, Christopher   +2 more
core   +1 more source

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