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Consider the following statements.
1.    IRNSS is an Independent regional navigation satellite system being developed by India.
2.    IRNSS will provide Standard Positioning Service (SPS) only.
3.    IRNSS satellites revolve round the earth at the height of about 18,000 km from the earth's surface.

Which of the above statements are correct?
  • a)
        1 only
  • b)
        1 and3
  • c)
        2 and 3
  • d)
        1, 2 and 3
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Consider the following statements.1. IRNSS is an Independent regional ...
 Answer: (a)
Explanation: IRNSS is an Independent regional navigation satellite system being developed by India.  It is designed to provide accurate position information service to users in India as well as the region extending up to 1500 Km from its boundary, which is its primary service area. IRNSS will provide two types of services, namely, Standard Positioning Service (SPS) which is provided to all the users and Restricted Service (RS), which is an encrypted service provided only to the authorized users.  The IRNSS System is expected to provide a position accuracy of better than 20 metres in the primary service area. The IRNSS space segment consists of seven satellites, with three satellites in geostationary orbit and four satellites in inclined geosynchronous orbit.  Thus, IRNSS satellites revolve round the earth at the height of about 36,000 km from the earth's surface. Applications of IRNSS include land, sea and air navigation, disaster management, vehicle tracking and fleet management, integration with mobile phones, provision of precise time, mapping and navigation aid for hikers and travelers, visual and voice navigation for drivers. It can track people or vehicles and can be of immense use in disaster situations like the recent one in Uttarakhand. Even the Railways may find it useful to track its wagons. Apart from India, its benefits would extend to a range of 1500 km in the region.
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Most Upvoted Answer
Consider the following statements.1. IRNSS is an Independent regional ...
Explanation:

IRNSS stands for Indian Regional Navigation Satellite System. It is an independent regional navigation satellite system being developed by India to provide accurate position information service to users in India as well as the region extending up to 1500 km from the nation's boundary.

Statement 1: IRNSS is an Independent regional navigation satellite system being developed by India.
This statement is correct. IRNSS is indeed an independent regional navigation satellite system being developed by India. The system consists of a constellation of satellites in geosynchronous and geostationary orbits.

Statement 2: IRNSS will provide Standard Positioning Service (SPS) only.
This statement is incorrect. IRNSS will provide both Standard Positioning Service (SPS) and Restricted Service (RS). The Standard Positioning Service will be available to all users and is similar to the GPS service provided globally. The Restricted Service will be an encrypted service and will be available only to authorized users.

Statement 3: IRNSS satellites revolve round the earth at the height of about 18,000 km from the earth's surface.
This statement is incorrect. The IRNSS satellites are placed in geostationary and geosynchronous orbits around the Earth. The geostationary orbit is at an altitude of approximately 36,000 km from the Earth's surface, while the geosynchronous orbit is at an altitude of approximately 26,000 km. The satellites are positioned in such a way that they appear stationary in the sky from the perspective of an observer on the ground.

Therefore, the correct answer is option 'A' - 1 only.
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Consider the following statements.1. IRNSS is an Independent regional navigation satellite system being developed by India.2. IRNSS will provide Standard Positioning Service (SPS) only.3. IRNSS satellites revolve round the earth at the height of about 18,000 km from the earth's surface.Which of the above statements are correct?a) 1 onlyb) 1 and3c) 2 and 3d) 1, 2 and 3Correct answer is option 'A'. Can you explain this answer?
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