1. Space applications center, India,
www.sac.gov.in
2. www.geosats.com
3. G. Maral, M. Bousquet, Z. Sun, Satellite Communication Systems: Systems, Techniques and Technology, 5th edn. December 2009, ISBN: 978-0-470-71458-4
4. A.K. Maini, Varsha Agrawal Satellite Technology: Principles and Applications (Wiley, 2014)