UPSC Previous Year Question | Prelims GS | 2025

GPS-Aided Geo Augmented Navigation (GAGAN) uses a system of ground-based 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. Its benefits will be available only in aviation but not in other modes of transportation. Select the correct answer using the code given below.

  1. I, II and III
  2. II and III only
  3. Only I
  4. I and II only

Answer

Correct Answer

I and II only

Explanation

GAGAN, India's satellite-based augmentation system, is designed to provide enhanced accuracy and integrity to GPS signals (Statement I correct) and enables more uniform, high-quality air traffic management (Statement II correct). However, its applications extend beyond aviation to other sectors such as surface transportation, surveying, and agriculture, so Statement III (limiting benefits only to aviation) is incorrect.

Topics: gagan, navigation, science and technology