Vol. 13, issue 02, article # 4

Abstract:

A comparison of algorithms for reconstructing gas concentrations in multicomponent gas mixtures is presented. We describe the signal processing procedures in application to DIAL methods that are based on the regularization methods of solving the ill-posed inverse problems. Examples of processing the experimental data are given. It is shown that the use of regularization methods in data processing gives rather low errors in gas concentrations reconstructed. Different methods for selection of the regularization constant have been used. In most cases the smallest errors are achieved with the use of such methods as selection of the quasi-optimal regularization constant, modified method of discrepancy, and the method of discrepancy with additional independent information invoked.