Fig. 1. Noise factor （χ）of H matrix and S matrix

Fig. 2. Principle of array slit imaging（a）schematic diagram of mathematical model of imaging process （b）data aliasing when array slits are encoded as s₁, s₂, … s_n

Fig. 3. Analysis of SNR with different measurement matrices （a）The change curve of SNR with signal electron number （Ns）, （b）the relationship between SNR increment and light intensity

Fig. 4. Space imaging simulation results （a）Original image, （b）single slit - Strong light intensity, （c）array slit - Strong light intensity, （d）single slit- Normal light intensity, （e）single slit- Normal light intensity, （f）single slit - Weak light intensity, （g）array slit - Weak light intensity

Fig. 5. SNR of single slit and array slit with different light intensity

Fig. 6. S-matrix coding short-wave infrared spectroscopy imaging system （a）System schematic diagram，（b）partial amplification of the detector，（c）physical drawing of the principle prototype

Fig. 7. Principle of array slit construction

Fig. 8. Imaging results of monochromatic light spectrum

Fig. 9. SNR at different light intensities （a）20% potential well, （b）10% potential well

Fig. 10. Spatial information recovery results

Fig. 11. Single slit and array slit waveband std curve

Fig. 12. Spectral information recovery effect