Large Aperture Static Interference Imaging Spectrometer is a new type of spectrometer with light structure, high spectral
linearity, high luminous flux and wide spectral range, etc ,which overcomes the contradiction between high flux and high
stability so that enables important values in science studies and applications. However, there’re different error laws in
imaging process of LASIS due to its different imaging style from traditional imaging spectrometers, correspondingly, its
data processing is complicated. In order to improve accuracy of spectrum detection and serve for quantitative analysis and
monitoring of topographical surface feature, the error law of LASIS imaging is supposed to be learned. In this paper, the
LASIS errors are classified as interferogram error, radiometric correction error and spectral inversion error, and each type
of error is analyzed and studied. Finally, a case study of Yaogan-14 is proposed, in which the interferogram error of LASIS
by time and space combined modulation is mainly experimented and analyzed, as well as the errors from process of
radiometric correction and spectral inversion.
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