---
title: "NavIC (IRNSS): India's Navigation System | Model Diplomat"
description: "NavIC (IRNSS) is India's satellite navigation system by ISRO, offering precise positioning over India and 1,500 km beyond, vital for regional security."
url: "https://modeldiplomat.com/learn/glossary/navic-irnss"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- NavIC is India's independent regional satellite navigation system, built by ISRO, providing positioning over India and a region extending roughly 1,500 km beyond its borders.
- How does NavIC differ from GPS in coverage and orbit?
- Why did India build NavIC instead of relying on GPS?
- What is the difference between NavIC and GAGAN?
- What frequencies does NavIC use and why does that matter?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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## Positions at a glance

### Supporters

By the mid-2020s NavIC had moved from demonstration toward integration. The atomic clocks aboard IRNSS-1A failed, prompting the launch of IRNSS-1H (which failed when the PSLV heat shield did not separate in August 2017) and subsequently IRNSS-1I in 2018. ISRO has since pursued a second-generation series; NVS-01 was launched in May 2023 aboard a GSLV, carrying an indigenous rubidium atomic clock and adding civilian signals in the L1 band (1575.42 MHz) to ease interoperability with mass-market chipsets. The Ministry of Electronics and Information Technology and the Telecom Regulatory Authority of India have pressed for NavIC-capable handsets, and Qualcomm announced chipset support in 2019–2020. NavIC is also used in vehicle-tracking systems mandated under India's transport regulations and in fishing-vessel messaging.

### Opponents

The constellation as designed comprises seven satellites: three positioned in geostationary orbit (GEO) at approximately 36,000 km, and four in inclined geosynchronous orbit (GSO) with an inclination near 29 degrees, crossing the equator at fixed longitudes. This architecture differs deliberately from the medium-Earth-orbit (MEO) constellations of GPS, GLONASS, Galileo and BeiDou; the geostationary and geosynchronous arrangement allows continuous coverage of the Indian region with a comparatively small number of spacecraft. The first satellite, IRNSS-1A, was launched aboard a PSLV in July 2013, and the constellation was declared operational in 2016 after the seventh launch. A user receiver computes its position by trilateration, measuring signal travel time from at least four visible satellites against onboard rubidium atomic clocks, with ranging signals broadcast in two bands.

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In May 2023 ISRO launched NVS-01 aboard a GSLV from Sriharikota, the first of NavIC's second-generation satellites, carrying an indigenously developed rubidium atomic clock and a new civilian L1-band signal.

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