Influence of satellite attitude jitter on dispersive spectrometer imaging offset

Satellite attitude jitters (pitch, roll and yaw) make dispersive imaging Spectrometer's space-spectral image arise geometry distortion or circumrotate and bring abnormal pixel offset. The paper gives the expression of the abnormal offset making use of collinear equation, and figure out the abnormal offset is equivalent to 0.1 pixel level or up to several ten pixels, so correction and processing for dispersive image must be carried out to gain true spectrum of the target. Research conclusion provides a reference basis for designing an effective dispersive image correction algorithm, at the same time it also provides a reference for satellite platform design.