A fast-scanning, high-resolution FTIR spectroradiometer has been designed and built for use in remote sensing, stand-off
detection, and spectral-temporal characterization of fast, energetic infrared events. The instrument design uses a
Michelson-type interferometer with a rotary modulator which is capable of continuous measurement of infrared spectra
at a rate of 1000 scans per second with 4 cm<sup>-1</sup> resolution in the 2 - 25 micron spectral range. Sensitivity, spectral
accuracy, and radiometric precision are discussed along with specific design parameters. This instrument can be used
for passive sensing as a stand-alone sensor, or for active sensing as a receiver when used in conjunction with a highenergy
excitation source such as a laser. Applications include muzzle flash signature measurement, ordnance detonation
characterization, missile plume identification, and rocket motor combustion diagnostics.