(a) GPS and GLONASS
(b) Galileo and Beidou
(c) GPS and Galileo
(d) GLONASS and BeiDou
(e) all of the above
Ans.(e)
Sol. The NavIC signals, particularly the Standard Position Service (SPS), are interoperable with the signals from GPS (United States), Glonass (Russia), Galileo (European Union), and BeiDou (China). This interoperability increases the usability and compatibility of NavIC for users.
