Study of radiometric calibration methods on a compact novel imaging guided FTIR spectrometer

Emerging applications in Defense and Security require sensors with state-of-the-art sensitivity and capabilities. We have developed a compact novel instrument that can not only provide imaging capability, bust also one that provides spectral capability of the field of view (FOV) center under the imaging guided. The absolute radiance accuracy of an instrument is one of its fundamental characteristics. In order to meet the highest radiometric precision and accuracy, we give two specific calibration methods: two-point calibration and multi-point segmentation calibration. This paper presents the results of the analysis of the radiometric calibration of this instrument, with emphasis on the temporal behavior of the instrument response.