Q61. With reference to the Indian Regional Navigation Satellite System (IRNSS), consider the following statements:
- IRNSS has three satellites in geostationary and four satellites in geosynchronous orbits.
- IRNSS covers the entire India and about 5500 sq. km beyond its borders.
- India will have its own satellite navigation system with full global coverage by the middle of 2021.
Which of the statements given above is/are correct?
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) None
Answer: A
- Statement 1 is correct: The space segment consists of the IRNSS constellation of eight satellites, NavIC. Three satellites are located in suitable orbital slots in the geostationary orbit and the remaining four are located in geosynchronous orbits with the required inclination and equatorial crossings in two different planes.
- Statement 2 is not correct: It covers India and a region extending 1,500 km around it, with plans for further extension. The system at present consists of a constellation of seven satellites, with two additional satellites on the ground as stand-by.
- Statement 3 is not correct: There are long-term plans to extend it to the SAARC region, but not by 2019. There are plans to add 4 more satellites to the present constellation.
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