With NavIC setback, India unable to use satellite system for security purposes: experts
A major setback occurred after the last atomic clock on board the Indian Regional Navigational Satellite System-1F (IRNSS-1F) stopped functioning on March 10, leaving only three satellites of the NavIC constellation in function; armed forces of countries use the navigation satellite system for logistics, mapping and operational planning, and relying on a foreign navigation satellite system could pose security issues, especially during wars
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Context
India's indigenous satellite navigation system, NavIC (Navigation with Indian Constellation), is facing a critical setback, rendering it non-functional for security and strategic use. A series of atomic clock failures, culminating in the last clock on IRNSS-1F failing, has reduced the number of operational satellites to three, below the minimum of four required for accurate positioning. This situation compromises India's goal of achieving strategic autonomy in satellite navigation, a goal initiated after the US denied access to GPS data during the 1999 Kargil War.
UPSC Perspectives
Strategic & Security
The operational failure of NavIC directly impacts India's strategic autonomy and national security. The system was conceived to end dependence on foreign systems like the American , Russian GLONASS, or European Galileo, which can be denied or degraded during geopolitical conflicts. The 1999 Kargil War, where India was denied crucial GPS data, serves as a key historical driver for developing NavIC. A fully functional indigenous system is paramount for modern warfare, guiding missiles, directing troop and asset movements, and ensuring secure communication. NavIC was designed with two services: a Standard Positioning Service (SPS) for civilian use and an encrypted, more accurate Restricted Service (RS) for military applications. The current inability to use this restricted service forces India's armed forces to rely on foreign constellations, exposing them to risks of signal spoofing or complete denial during a conflict, which could be fatal.
Science & Technology
This issue highlights significant technological challenges in sustaining complex space infrastructure. The core of the problem lies in the repeated failure of atomic clocks, which are ultra-precise timekeeping devices essential for a navigation satellite to calculate location accurately through trilateration. Even a nanosecond's error can lead to meter-level inaccuracies on the ground. The first generation of satellites, which used imported clocks, suffered from these failures. To counter this, the developed indigenous Rubidium atomic clocks, which have been integrated into the second-generation [NVS] satellites, such as NVS-01. However, a failed launch attempt for NVS-02 in 2025 and the ageing of the initial satellites have compounded the problem, delaying the replenishment of the constellation. This serves as a case study on the importance of mastering critical component technology and maintaining a consistent launch schedule for satellite replacement.
Governance & Policy
The NavIC crisis raises questions about policy prioritization and resource allocation within India's space program. Critics, like former bureaucrat E.A.S. Sarma, suggest that the focus on high-visibility, 'prestige' missions like the [Gaganyaan] human spaceflight program may have diverted attention and resources from strategically critical projects like NavIC. While missions like Gaganyaan have immense value for scientific progress and national pride, the faltering of a vital dual-use technology asset like NavIC underscores the need for a balanced approach. Effective governance requires ensuring that foundational strategic projects, which form the bedrock of self-reliance in defence and technology, are maintained and upgraded consistently. The failure to keep the NavIC constellation fully operational could be examined by parliamentary committees and necessitates a clear roadmap for future launches and technological improvements to restore India's sovereign navigation capabilities.