论文信息 - Differential detection with a double-beam interferometer

Differential detection with a double-beam interferometer

First steps in the development of a new method for the remote detection of gaseous emanations by FTIR are presented. The method is based on the use of a double beam interferometer-spectrometer (CATSI) optimized for optical subtraction. The instrument is described with a particular emphasis on its capabilities for differential detection and background suppression. Radiometric equations applicable to the differential detection of gaseous emanations by FTIR are established for the general case of slant path scenarios containing any type of background scenes. Finally the potential of the method is illustrated through several laboratory measurements done with the CATSI system.

Martin Chamberland | Jean-Marc Theriault | Claude Bradette | Andre J. Villemaire | Jean Giroux

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