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VOL. I · EST. 11.2025 
SatyaDheesh
सत्याधीश
India's Ground Truth Record
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Failure of atomic clock cripples ISRO’s NavIC system

GS3Economy · S&T · Environment · Security· Space technology (ISRO, missions)· Prelims + Mains·

Why in news

ISRO announced the failure of the last atomic clock aboard the IRNSS-1F satellite, reducing the number of functioning atomic clocks in the NavIC system to three.

Background

NavIC provides navigation and timing services within India and a 1,500 km radius.

Facts for Prelims

  • S&TNavIC: India's indigenous regional navigation satellite system.
  • FactNavIC coverage: India and a 1,500 km radius.
  • S&TRubidium clocks: Indigenously developed clocks planned for replacement satellites.
  • FactIRNSS-1F: One of the satellites in the NavIC constellation launched since 2013.

For Mains

Q. Examine the strategic importance of indigenous navigation systems like NavIC for India's national security and economic sovereignty.

Dimensions to cover in your answer

  • Strategic autonomy: Reducing dependence on foreign GPS systems during global conflicts
  • Technical reliability: Addressing hardware degradation in aging satellite constellations
  • Precision timing: Ensuring accuracy for critical infrastructure and disaster management

Keywords: Strategic Autonomy · Indigenous Technology · Navigation Systems · Satellite Constellation · Technological Sovereignty

Read the full news →Report a mistake in this noteSource: The Hindu ↗

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