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Method and apparatus for transforming uniformly or non-uniformly sampled interferograms to produce spectral data
Method and apparatus for transforming uniformly or non-uniformly sampled interferograms to produce spectral data
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机译:用于对均匀或不均匀采样的干涉图进行变换以产生光谱数据的方法和设备
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摘要
A reconstruction matrix used for calculating a hyperspectral data-cube includes rows of periodic functions. Each row of the reconstruction matrix corresponds to a selected wavelength and each column corresponds to a selected retardance of an interferometer. The periodic functions have as a parameter the selected wavelength of the corresponding row and are sampled at the selected retardances of each of the corresponding columns. An interferogram data-cube is obtained and includes an array of one or more simultaneously measured interferograms. Each row of the interferogram data-cube corresponds to one of the selected retardances and each column corresponds to a different interferogram from the simultaneously measured interferograms. A set of matrix-vector products for each of the interferograms is formed by multiplying the reconstruction matrix with a column of the interferogram data-cube to form the hyperspectral data-cube.
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