ISRO's 100th Launch Mission from Sriharikota
Why focus: GS3 Sci-Tech: Classic Prelims trap. NVS-02 launch tests NavIC vs GPS constellation numbers and atomic clock payloads in 'How-Many-Correct'.
In News
What Happened
Why It Matters
Background
History & Context
What Changed
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Frequency Bands: BEFORE, first-generation NavIC satellites relied primarily on L5 and S bands for positioning data. NOW, second-generation NVS satellites incorporate the L1 frequency band, which is the standard used in consumer GPS, drastically improving civilian adoption in smartphones and wearable devices.
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Atomic Clocks: BEFORE, India relied on imported rubidium atomic clocks which faced a high failure rate in early IRNSS satellites, degrading their navigation capabilities. NOW, NVS satellites use indigenous Rubidium Atomic Frequency Standards developed by ISRO to ensure strategic autonomy.
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Mission Life: BEFORE, the first-generation NavIC satellites were designed with a standard mission lifespan of 10 years. NOW, the newer second-generation NVS satellites are engineered to have an extended mission life of 12 years.
Prelims Angle
NCERT Connection
Practice Questions
Q1
With Reference ToWith reference to the NavIC (Navigation with Indian Constellation) system and the NVS series of satellites, consider the following statements: 1. NVS satellites introduce the L1 frequency band to improve interoperability with global positioning systems like GPS. 2. The second-generation NVS satellites exclusively use imported atomic clocks to avoid the failures seen in earlier missions. 3. NavIC provides both a Standard Positioning Service (SPS) for civilian use and a Restricted Service (RS) for authorized military users. Which of the statements given above is/are correct?