UPSC Previous Year Question | Prelims GS | 2018

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?

  1. 1 only
  2. 1 and 2 only
  3. 2 and 3 only
  4. None

Answer

Correct Answer

1 only

Explanation

The IRNSS constellation has three satellites in geostationary orbit and four in inclined geosynchronous orbits (statement 1 correct). It covers India and about 1,500 km around it (not 5,500 sq. km), and it is a regional, not global, system.

Topics: irnss / navic, navigation satellite systems, science and technology, space technology