Smoothing of the Time-Resolved Spectral Matrix Obtained by a Streak Camera: Estimation of the Fluorescence Band Parameters

A new method based on singular value decomposition (SVD) was applied to the denoising of time-resolved spectral matrix (TRSM), which obtained by a streak camera. The least informative principal components (PCs) were filtered out using Tikhonov regularization principle. for determining quasi-optimal parameter suggested. SVD compared with moving average time direction (MATD) smoothing TRSM. Numerical simulations and experimental study 3-aminophthalimide (3AP) solution in acetonitrile showed that allowed accurate measurement signals peak maximum. Fitting polynomial modified Gaussian smoothed fluorescent bands decreased errors maximum position its width. This us obtain kinetics data fluorescence band parameters 3AP spectrum an solution. Flexible selection processing better resolution are main advantages over MATD.