1.
J Magn Reson
; 203(1): 167-76, 2010 Mar.
Artigo
em Inglês
| MEDLINE
| ID: mdl-20053571
RESUMO
The problem of estimating the spectral content of exponentially decaying signals from a set of irregularly sampled data is of considerable interest in several applications, for example in various forms of radio frequency spectroscopy. In this paper, we propose a new nonparametric iterative adaptive approach that provides a solution to this estimation problem. As opposed to commonly used methods in the field, the damping coefficient, or linewidth, is explicitly modeled, which allows for an improved estimation performance. Numerical examples using both simulated data and data from NQR experiments illustrate the benefits of the proposed estimator as compared to currently available nonparametric methods.
Assuntos
Algoritmos , Espectroscopia de Ressonância Magnética/estatística & dados numéricos , Ondas de Rádio , Simulação por Computador , Substâncias Explosivas/química , Fertilizantes , Método de Monte Carlo , Nitratos/química , Processos Estocásticos
2.
Health Prog
; 85(1): 17-8, 2004.
Artigo
em Inglês
| MEDLINE
| ID: mdl-14763114