Abstract
On September 6, 2008, in Taiyuan Satellite Launch Center, HJ-1A/B satellites (HJ-1A/B), China's first two satellites of Environment & Disasters Monitoring and Predicting Microsatellite Constellations, were successfully launched with the technique of “one rocket, two satellites”. The HyperSpectral Imager(HSI) on-board HJ-1A satellite is a Fourier Transform HyperSpectral Imager(FTHSI) built by Xian Institute of Optics and Precision Mechanics(XIOPM) of Chinese Academy of Sciences(CAS). This paper briefly introduces the spectral and radiometric properties of HSI, basic imaging theories of the spatially modulated Fourier transform imaging spectrometer, and then discusses the algorithms of spectrum reconstruction. In the end, the result of the operational spectrum reconstruction for the raw data of the HJ-1A satellite Fourier transform HSI is presented.
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