Title :
Parameter precision in global analysis of time-resolved spectra
Author :
Van Stokkum, Ivo H M
Author_Institution :
Dept. of Phys. & Astron., Vrije Univ., Amsterdam, Netherlands
fDate :
8/1/1997 12:00:00 AM
Abstract :
By means of simulation parameter estimation in global analysis of time resolved spectra was studied. Kinetic, spectral as well as spectrotemporal models were used to describe a system consisting of an inherent mixture of components whose concentrations change with time. With a single component the parameter precision did not differ between the different model types. With two or more components the precision decreases with a kinetic or spectral model because of overlap between concentration profiles or spectra of the components. However, with a spectrotemporal model the decrease is much less, and equals zero with zero spectral overlap
Keywords :
curve fitting; jitter; parameter estimation; spectral analysis; spectrochemical analysis; spectroscopy computing; time resolved spectra; time resolved spectroscopy; concentration profiles; curve fitting; global analysis; kinetic model; least squares model; parameter precision; simulation parameter estimation; spectral model; spectrotemporal model; spectrotemporal models; time resolved spectra; time-resolved spectra; zero spectral overlap; Analytical models; Curve fitting; Helium; Kinetic theory; Parameter estimation; Parametric statistics; Photochemistry; Spectroscopy; Stochastic processes; System identification;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
