Target Detection Using Infrared Spectral Sensors

Infrared spectral sensors are being investigated as a means for day and night target detection. Target detection performance was estimated using the multiband signal-to-clutter ratio (SCR). The average SCR for a variety of targets and backgrounds can be calculated from Fourier transform spectrometer measurements previously made at vegetated and desert locations. The variation in average SCR was examined as a function of number of spectral bands, locations of bands, and potential sensor noise level for a variety of air-to-ground target detection geometries. The results are useful for assessing the utility and feasibility of infrared spectral target detection and also for specifying future sensor parameters.