UPSC 2025ScienceModerate

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? I. It is designed to provide additional accuracy and integrity. II. It will allow more uniform and high quality air traffic management. III. It will provide benefits only in aviation but not in other modes of transportation. Select the correct answer using the code given below.

A
I, II and III
B
II and III only
C
I only
D
I and II only
Correct Answer

Explanation

Statements I and II are correct because GAGAN is a Satellite-Based Augmentation System (SBAS) designed to enhance GPS accuracy and integrity, specifically to improve safety and efficiency in air traffic management. Statement III is incorrect because, although primarily developed for aviation, GAGAN provides multi-modal benefits across sectors like maritime, railways, surveying, and disaster management. The core concept being tested is the functionality and application scope of India's indigenous satellite navigation augmentation system.

Space TechnologySatellite Navigation SystemsGAGANGPSSatellite NavigationAir Traffic ManagementISRO

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