| Title | Url |
|---|---|
| ESA Navipedia | https://gssc.esa.int/navipedia/index.php/Main_Page |
| Sanz Subirana, J., Juan Zornoza, J.M. and Hernández-Pajares, M. (2013) GNSS Data Processing, Vol. 1: Fundamentals and Algorithms (ESA TM-23/1, May 2013) ESA Communications, Noordwijk, The Netherlands. | https://gssc.esa.int/navipedia/GNSS_Book/ESA_GNSS-Book_TM-23_Vol_I.pdf |