1. Suryanarayana Rao K.N. (2007). Indian Regional Navigation Satellite System. IEEE Seminar on Global Satellite Navigation and Applications, Hyderabad, India.
2. http//:sidt.gpsworld.com
3. http://isro.gov.in
4. Martin S. (1999). Antenna Diagram Shaping for Pseudolite Transmitter Antennas – A solution to the Near-Far Problem. Proceedings of the 12th International Technical Meeting of the Satellite Division of the Institute of Navigation, Nashville, Tennessee.
5. Parkinson W.B and Spilker J.J (1996). Global Positioning System: Theory and Applications – vol. I and II. Institute of Aeronautics and Astronautics, Inc, Washington.