1. Kulu, E. (2019, January 7–12). Satellite Constellations—2021 Industry Survey and Trends. NewSpace Index, Nanosats Database, Kepler Communications. Proceedings of the 35th Annual Small Satellite Conference, Logan, UT, USA.
2. Curzi, G., Modenini, D., and Tortora, P. (2020). Large Constellations of Small Satellites: A Survey of Near Future Challenges and Missions. Aerospace, 7.
3. Rashed, M.I., and Bang, H. (2022, January 12–14). A Study on Self-organizing Small-satellite Constellation and its Ground Stations for Real-time and Commercial Applications. Proceedings of the 2022 Asia-Pacific International Symposium on Aerospace Technology (APISAT-2022), Niigata, Japan.
4. Guan, M., Xu, T., Gao, F., Nie, W., and Yang, H. (2020). Optimal Walker Constellation Design of LEO-Based Global Navigation and Augmentation System. Remote Sens., 12.
5. Kaplan, E., and Hegarty, C. (2005). Understanding GPS: Principles and Applications, Artech House. [2nd ed.].