CATSI EDM: Recent Advances in the Development and Validationof a Ruggedized Passive Standoff CWA Sensor

摘要

Defence Research and Development Canada (DRDC) – Valcartier is currently developing a ruggedized passive standoffsensor for the detection of chemical warfare agents (CWAs) based on differential Fourier-transform infrared (FTIR)radiometry. This system is referred to as the Compact ATmospheric Sounding Interferometer (CATSI) EngineeringDevelopment Model (EDM). The CATSI EDM sensor is based on the use of a double-beam FTIR spectrometer that isoptimized for optical subtraction. A description of the customized sensor is given along with a discussion on thedetection and identification approaches that have been developed. Preliminary results of validation from a number oflaboratory measurements and open-air trials are analyzed to establish the capability of detection and identification ofvarious toxic and non-toxic chemical vapor plumes. These results clearly demonstrate the capability of the passivedifferential radiometric approach for the standoff detection and identification of chemical vapors at distances up to a fewkilometers from the sensor