China’s Chang’e-4 probe achieved the first soft landing within the South Pole-Aitken (SPA) basin, which is the oldest, largest and deepest basin on the lunar farside. Technologies and software have been used in the Chang’e-4 mission for studies like lander localization, 3-D terrain reconstruction, hazard recognition, and visual localization of the rover.
Source:
https://phys.org/news/2020-06-scientists-topographic-analysis-mineral-based.html