UPSC Prelims 2018·GS1·science-and-technology·space

With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements: 1. IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits. 2. IRNSS covers entire India and about 5500 sq. km beyond its borders. 3. India will have its own satellite navigation system with full global coverage by the middle of 2019. Which of the statements given above is/are correct?

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Last updated 8 Jul 2026, 4:39 pm IST
  1. A1 onlyCorrect
  2. B1 and 2 only
  3. C2 and 3 only
  4. DNone

Explanation

  1. IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits: Correct. NavIC consists of seven satellites — three in geostationary orbit (GEO) and four in geosynchronous orbit (GSO).

  2. IRNSS covers entire India and about 5500 sq. km beyond its borders: Incorrect. IRNSS/NavIC is designed to provide coverage over India and a region extending up to 1500 km beyond its borders, not 5500 sq. km.

  3. India will have its own satellite navigation system with full global coverage by the middle of 2019: Incorrect. NavIC is a regional navigation satellite system (RNSS), not a global one. It provides regional coverage only.

Therefore, only statement 1 is correct.

science-and-technology: With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements: 1. IRNSS h
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