Fig. 1. Schematic diagram of DASH interferometer

Fig. 2. Limb-viewing model

Fig. 3. Simulation of sudden change in wind profile

Fig. 4. Flow chart of interference diagram contrast processing

Fig. 5. Simulation of interferogram with different contrasts

Fig. 6. Processing results of different contrast enhancement algorithms. (a) Contrast of 0.1; (b) contrast of 0.2; (c) contrast of 0.3; (d) contrast of 0.4

Fig. 7. Comparison of errors of different algorithms

Fig. 8. Experimental light path

Fig. 9. Comparison of wind speed inversion results before and after interferogram contrast processing

Fig. 10. Three interferograms taken by spaceborne interferometer at different time periods on June 16, 2024, and their contrasts and signal-to-noise ratios

Fig. 11. Comparison between spaceborne interferogram line-of-sight wind and HWM 14. (a) 2024-06-16 T 08:16:32 Z; (b) 2024-06-16 T 03:42:04 Z; (c) 2024-06-16 T 03:52:41 Z