Fig. 1. DPC optical system. (a) Structure of DPC optical system; (b) imaging path of DPC optical system

Fig. 2. Installation diagram of optical filter and analyser module

Fig. 3. Integral sphere reference light imaging in single field-of-view

Fig. 4. Sectional field-of-view measurement of polarization channel response non-uniformity. (a) Schematic of lighting for sectional field-of-view measurement; (b) schematic of sectional field-of-view measurement; (c) experiment diagram of sectional field-of-view measurement

Fig. 5. Response non-uniformity among three channels in same waveband. (a) Channel 13/channel 14; (b) channel 15/channel 14

Fig. 6. Bad pixel detection window

Fig. 7. Detection result of bad pixels at (187,96) of mosaic image in channel 3 sectional field-of-view imaging

Fig. 8. Calibration process of polarization channel response non-uniformity

Fig. 9. Detection of bad pixels in laboratory before launch. (a) Original image; (b) 11×11 area composite graph for detecting bad pixels

Fig. 10. Detection of bad pixels of on-orbit imaging data after launch. (a) The second circle on-orbit imaging data; (b) 11×11 area composite graph for detecting bad pixels

Fig. 11. Detection of bad pixels of imaging data after one year on-orbit operation. (a) The 5638th circle on-orbit imaging data; (b) 11×11 area composite graph for detecting bad pixels

Fig. 12. Calculation results of low and high frequency relative transmittances. (a) Low frequency relative transmittance; (b) high frequency relative transmittance

Fig. 13. Test results of integral sphere uniformity and angle characteristic. (a) Surface uniformity detection; (b) angle characteristic test curve

Fig. 14. Result of non-stability test