Results of field testing of a LWIR hyperspectral imager based on a Sagnac interferometer and uncooled microbolometer
array are presented. Signal to noise ratios of nearly 1000 are found for 30 bands across the LWIR (8-14 microns) at
useful data collection rates (7000 spectra/second). Spectra are compared to those collected simultaneously with a
cryogenic LWIR hyperspectral system (U. Hawaii AHI).
A long-wave infrared hyperspectral sensor using an interferometer and an uncooled microbolometer array camera was built and tested. The sensor showed signal to noise ratios near 200 for ambient temperature scenes with 33 wavenumber resolution at a frame rate of 50 Hz. Straightforward performance improvements in optics and reported detector performances suggest signal to noise ratios near 1000 at 10 wavenumber resolution should be achievable.