NavIC / IRNSS

Story hook

It is May 1999. Indian Army officers in Kargil need precise location data to direct artillery fire on Pakistani positions on the Tololing and Tiger Hill ridges. They ask the US for GPS access at higher precision. Washington refuses. US-controlled GPS, even at its civilian "Selective Availability" precision of ~100 metres, is the only positioning service available — and Pakistan's positions, being just a few hundred metres apart on these ridges, demand much better. Indian troops fall back on conventional map-and-compass artillery direction, paying in lives for the absence of an indigenous navigation capability.

The lesson lodges in the security establishment. Five years later, in May 2006, the Indian Regional Navigation Satellite System (IRNSS) is approved by the Cabinet at ₹1,420 crore. A decade later, seven satellites are in orbit. In April 2016, Prime Minister Modi formally rebrands it NavIC — "Navigation with Indian Constellation" — adapting a Sanskrit-derived name that also means "sailor" or "navigator" in Hindi.

By 2024, India has a regional GPS-equivalent service, all new smartphones sold in India are mandated to support NavIC chipsets, and a new generation of satellites is being deployed to add L1 band support so Indian receivers can fall back to NavIC transparently when GPS is jammed. The Kargil lesson has been operationalised.

Why this matters for UPSC

NavIC + GAGAN have appeared in Prelims four times since 2018 (2018, 2019, 2021, 2024) — typically asking about constellation size, services, or coverage. Mains has tested the strategic dimensions (GS-III internal security + IR). Interview boards probe applications, the smartphone chipset mandate, and the strategic vs civilian trade-off.