The first Chinese space laboratory Tiangong-1 is launched on September 29

2011.The module carries one hyperspectral imager

which includes two imaging spectrometers: one is the visible-near infraredimaging spectrometer and the other is the short wave infrared imaging spectrometer. The hyperspectral imager has the capable of obtaining data with the nano-scale spectral resolution and high spatial resolution. For quantitative application of these data

the method and process flow of hyperspectral imager radiometric and spectral correction is proposed

based on the analysis of imaging principle and data characteristic. First

the original DN data are removed background noise

then

the data are carried out radiometric correction and bad pixels are repaired

finally

the data are performed smile correction. The scale coefficient of corrected data is also provided.