Fig. 1. Schematic of spectrum detection by spatial modulation Fourier transform spectrometer

Fig. 2. Model of split-step beam propagation in atmosphere

Fig. 3. Phase distributions of optical field at telescope entrance pupil plane. (a) 2D distribution; (b) 3D distribution

Fig. 4. Intensity distributions of interferograms (a) without atmospheric disturbance and (b) with atmospheric disturbance

Fig. 5. Interferogram sequences (a) without atmospheric disturbance and (b) with atmospheric disturbance

Fig. 6. Recovered spectra of interferogram sequences (a) without atmospheric disturbance and (b) with atmospheric disturbance

Fig. 7. Histogram of normalized spectrum error

Fig. 8. Curved surface of normalized spectrum error with the change of telescope entrance pupil magnification and atmospheric coherence length

Fig. 9. Correlation curves of normalized spectra error versus atmospheric coherence length

Fig. 10. Correlation curve of normalized spectra error versus telescope entrance pupil magnification