Interference Spectral Imaging Technology, Data Processing Algorithms Research

Interference imaging spectroscopy is the advanced subject among the visible and infrared remote sensing, and it has become an important approach to acquire three-dimension information of the object which was taken photos of. Firstly, the background, research status and application of Fourier Transform Spectroscopy (FTS)are reviewed and summarized. The essential theory, basic configuration and features are described.Temporarily Modulated Imaging Interferometer and Spatially Modulated Imaging Interferometer are introduced,and the essential theory and features of triangle common-path IFTS is mainly discussed.Secondly, the key technology of spectrum reconstruction from interferogram such as interferogram data pre-processing, apodization filter and phase correction are researched. The phase correction algorithms, as well as a kind of new improved Discrete Fourier transform Algorithm are emphatically analyzed. Based on the study of the processing algorithm of interferogram, a program is written to process the interferogram.The experiment of FTS has been done.The processing result is obtained.