UPSC CSE Prelims
Question 74
GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground stations to provide necessary augmentation. Which of the following statements is/are correct in respect of GAGAN?
- It is designed to provide additional accuracy and integrity.
- It will allow more uniform and high quality air traffic management.
- It will provide benefits only in aviation but not in other modes of transportation.
Select the correct answer using the code given below.
View correct answer and explanation
Correct answer: D
Correct Option: D (I and II only)
Explanation: GAGAN is India's satellite-based augmentation system, using ground reference stations to improve GPS accuracy, reliability and integrity. It supports civil aviation and has potential applications beyond aviation.
Statement / Pair / Item-wise Analysis:
I: True-provides GPS integrity and improved positioning accuracy.
II: True-enhances safer, more consistent air navigation.
III: False-augmentation can assist other transport and location-based services too.
Option-wise Analysis:
A. Incorrect-includes III despite the item-wise findings.
B. Incorrect-includes III despite the item-wise findings; omits I which the answer requires.
C. Incorrect-omits II which the answer requires.
D. Correct-this matches the facts and the item-wise assessment above.