Automatic baseline correction method for the open-path Fourier transform infrared spectra by using simple iterative averaging

An automatic baseline correction method, the Iterative Averaging method, is presented. Baseline corrected by this method is accurate, and it also shows more precise than other methods when it is applied to Fourier Transform Infrared experimental spectra and simulated data.

This method solves the key technology of the real-time on-line spectral analysis of OP-FTIR and improves the capability and adaptability of the unsupervised on-line system effectively.