UPSC Prelims 2023 · Question 87 of 97
UPSC Prelims 2023 question on Satellite Navigation Systems
- ExamUPSC CSE
- Year2023
- PaperGeneral Studies Paper I
- SubjectScience and Technology
- TopicSpace Technology
- DifficultyMedium
- TypeDirect
Which one of the following countries has its own Satellite Navigation System?
Show answer
Answer: D. Japan
Satellite navigation is based on the use of range measurements between navigational satellite and the user. Information about the satellite's coordinates is given to the user through navigation signal.
Currently, there are four global systems: GPS from USA, GLONASS from Russia, Galileo from European Union and BeiDou from China.
In addition, there are two regional systems: NavIC from India and QZSS from Japan.
Global navigation system caters to the users in the entire world, whereas regional navigation system caters to the users in the limited service area.
Hence option (d) Japan is the correct answer.
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