Interference Imaging Spectrometer Interference Graph Processing

Interference imaging spectroscopy is the advanced subject among the visible and infrared remote sensing, and it has become an important technique to acquire three-dimension information. First, the background, research status and application of Fourier Transform Spectroscopy (FTS) are reviewed and summarized. The theory, basic configuration and features are analyzed. Temporarily Modulated Imaging Interferometer and Spatially Modulated Imaging Interferometer are analyzed. The theory and features of triangle common-path Interference Fourier Transform Spectroscopy (IFTS) is mainly discussed. Second, the key technology of spectrum reconstruction from interferogram such as interferogram data pre-processing, apodization filter and phase correction are researched. Apodization and phase correction are emphatically analyzed. Six common kinds of apodization are used to process the simulated interferogram and laser interferogram. The experimental results are analyzed, and the results demonstrate that banning apodization is best for laser interferogram and the hamming apodization is best for simulated interferogram. In addition, four methods of phase correction are discussed and the technical scheme is obtained.