Fig. 1. Structure and optical path of miniature snapshot Fourier-transform imaging spectrometer. (a) Structure; (b) optical path

Fig. 2. Relationship between field of view and azimuth angle corresponding to light wave propagation direction (take 2×2 array as example)

Fig. 3. Intensity distributions of interferometric image-point array corresponding to different field of view. (a) Zero field of view; (b) sagittal field of view; (c) meridional field of view; (d) diagonal field of view

Fig. 4. Intensity distribution of interferometric image points in zero-order interferometric imaging region

Fig. 5. Recovered spectra corresponding to different field of view. (a) Zero field of view; (b) sagittal field of view; (c) meridional field of view; (d) diagonal field of view

Fig. 6. Variationin limited field of view with azimuth angle and optical path difference

Fig. 7. Imaging graphic of field of view (θ, ω) on interferometric localization (m, n)

Fig. 8. Imaging graphic of two projection heights with certain optical path difference by relay imaging lens

Fig. 9. Variationin phase error with field of view and azimuth angle in different interferometric imaging channels. (a) Interferometric imaging channel (0, 0); (b) interferometric imaging channel (7, 0); (c) interferometric imaging channel (0, 7); (d) interferometric imaging channel (7, 7)

Fig. 10. Variation in normalized spectral error with field of view and azimuth angle