Abstract: At present, Galileo System and BDS have completed the current round of construction, and major GNSS systems are deploying the next generation navigation satellites and laying out related technologies. The improvement of precision and countermeasure performance, high reliability and long service life are the goals of navigation system development. The current development of space intelligent navigation technology is studied in this paper, especially the key technology of navigation satellite payload. The foreign innovative R&D concepts, system technology and cutting edge technology development are extensively investigated, and the development needs and driving forces are analyzed. Moreover, the current development level and development direction of foreign navigation satellite artificial intelligence system technology are determined. Finally, some enlightenment and suggestions for China’s development are put forward.

Key words: satellite navigation, intelligent navigation, navigation payload, space time datum