Comparison of methods of laser photo-acoustic gas analyser signal processing for multicomponent analysis of gas mixtures

Comparative analysis of reconstructing algorithms of gas concentration for the problems of multicomponent gas mixture monitoring, is considered. Processing of signals based on the methods to regularize solution for incorrect mathematical problems, is described for the laser method of differential absorption. The results of numerical simulation and experimental investigation are presented. It is shown that the application of regularized processing procedures provides low level of errors of gas concentration reconstruction for different choice methods of the regularization constant. Optimal algorithm of the regularization constant choice is defined by the requirements for accuracy of gas component concentration reconstructing and by operation time of the processing program.