1. NASA space science data coordinated archive. NASA, http://nssdc.gsfc.nasa.gov.
2. Spacecraft navigation. NASA jet propulsion laboratory, https://solarsystem.nasa.gov/basics/bsf13–1.php.
3. J. D. Kronman, “Experience using GPS for orbit determination of a geosynchronous satellite,” Proc. of the 13th Int. Tech. Meeting of Institute of Navigation, ION GPS 2000, 19–22 Sept. 2000, Salt Lake City, UT (2000), pp. 1622–1626.
4. Global Positioning System Standard Positioning Service Performance Standard. FAA, 4th ed. (Sept. 2008).
5. Geostationary orbit, https://en.wikipedia.org/wiki/Geostationary_orbit.