Cross-interference correction for multi-gas TDLAS detection

Multi-component gases are a typical form of practical field measurement environment, and the issue of cross-interference between multi-component gases can significantly impact the precision of detection results. Multi-component gas detection is a promising use of Tunable Diode Laser Absorption Spectroscopy (TDLAS), an optical technology with wavelength tunability, high selectivity, and multi-component detection capabilities. This paper describes the reasons and correction methods for the cross-interference phenomenon of multi-component gases, introduces several multi-component gas detection algorithms based on TDLAS technology, analyzes the advantages and disadvantages of the algorithms as well as their scope of application, and aims to provide a reference for the cross-interference correction technology of multi-component gas detection.