The Electro-Optics division at the Defense Research Establishment Valcartier (DREV) has recently embarked on a program to develop an infrared imaging spectrometer system, a device which combines the properties of a radiometer, a thermal imager, and a spectrometer to permit the simultaneous registration of the following attributes of a distant emission source: its infrared intensity, the spatial distribution of its radiation, the spectral distribution of its energy, and its temporal behavior. The DREV instrument couples existing detector and interferometric technologies to produce a novel capability for the measurement of emissions from distant targets. This is a high-technology-based system incorporating: fast microcomputers to handle, in real-time, the vast quantities of raw data generated; specialized IR detector focal plane arrays capable of working in conjunction with spectral measurement modules; and sophisticated algorithms for processing of the spatially resolved spectral information, and for its presentation in a simple and meaningful form.