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🛡 Security & DefenceMAINS · GS3.17 · GS3.12

MoD signs ₹1,950 crore mountain radar deal

The Defence Ministry contracts Bharat Electronics for two indigenous Mountain Radars for the Indian Air Force, under the most indigenisation-heavy procurement category in the rulebook.

What happened

Background & context

A radar is the sensor at the front of any air-defence system: it detects, tracks and identifies aircraft, drones and missiles, and feeds that picture to the weapons and command network that decides how to respond. A Mountain Radar is a class purpose-built for high-altitude terrain. In the Himalayan theatre, ground-based radars sited in valleys suffer terrain masking — mountains block the line of sight, so low-flying aircraft and slow drones can slip below the horizon undetected. A radar engineered for mountain deployment is built to be transportable to high ground, to perform in thin air and harsh weather, and to widen low-level coverage across ridgelines. The two radars contracted here are meant to plug exactly such gaps in the IAF's surveillance grid along the northern frontiers.

The procurement sits inside India's broader push for self-reliance in defence — the policy umbrella popularly framed as Atmanirbhar Bharat in defence. The instrument that converts that policy into purchasing rules is the Defence Acquisition Procedure (DAP) 2020, the manual that replaced the earlier Defence Procurement Procedure (DPP) 2016. DAP 2020 ranks how the armed forces are allowed to buy, in descending order of indigenous content: Buy (Indian-IDDM) sits at the top, followed by Buy (Indian), then Buy and Make (Indian), Buy and Make, and finally Buy (Global – Manufacture in India) and Buy (Global) at the bottom. The order is deliberate: the categories nearer the top demand more of the design, development and manufacturing to happen inside India.

This deal also illustrates the standard Indian defence-development chain. DRDO is the apex research agency under the Department of Defence Research and Development; its laboratory LRDE (Bengaluru) is the country's lead radar-design house, the same lab behind ground-surveillance and weapon-locating radar systems. Once a DRDO lab finishes the design, a production agency builds it at scale. For electronics and radar, that production agency is most often BEL, a Navratna defence PSU under the Ministry of Defence, headquartered in Bengaluru. So the pattern here — DRDO/LRDE designs, BEL manufactures, the armed force inducts — is the textbook route by which an indigenous military system reaches the field.

It helps to place this contract in the wider machinery of defence procurement. Capital acquisitions of this kind are approved through the Defence Acquisition Council (DAC), the apex decision-making body on capital purchases, chaired by the Defence Minister. The DAC grants the initial "Acceptance of Necessity" for a requirement; the proposal then moves through cost negotiation before a contract is signed with the chosen vendor. Funds flow from the capital outlay of the defence budget — the portion meant for new acquisitions and modernisation, distinct from the much larger revenue head that pays salaries, pensions and running costs. India has, in recent years, ring-fenced a rising share of the capital procurement budget for domestic industry and published successive "positive indigenisation lists" of items that may only be bought from Indian sources once local capability matures. A Buy (Indian-IDDM) radar fits squarely inside that direction of policy.

The radar itself belongs to a family of ground-based military sensors that an aspirant should be able to tell apart. Broadly, radars are grouped by job: surveillance / air-defence radars that scan the sky to detect and track aircraft and missiles; weapon-locating radars that back-track incoming artillery and rocket fire to find the enemy gun; fire-control radars that guide a weapon onto a target; and specialised classes such as low-level light-weight radars and mountain radars tuned for terrain and altitude. The Mountain Radar in this contract is a surveillance-class sensor optimised for high-altitude deployment. Knowing that taxonomy is what lets you separate this system from, say, a fire-control or a tracking radar in a statement-based question.

For Prelims

For UPSC: Buy (Indian-IDDM) is the most indigenisation-heavy procurement category in DAP 2020; this Mountain Radar is LRDE/DRDO-designed and BEL-built for the IAF. Remember the chain: DRDO designs → BEL manufactures → IAF inducts.

Why it matters

India remains one of the world's largest arms importers, and air-defence sensors and electronics have historically been a heavy import line. Each foreign radar purchase carries a recurring cost beyond the price tag — dependence on the original equipment manufacturer for spares, software updates, upgrades and technical support, plus the strategic vulnerability of relying on an external supplier during a crisis. An IDDM radar designed by LRDE and built by BEL keeps the intellectual property, the production line and the lifetime support inside the country. That shortens supply chains, lets the system be tuned to Indian terrain and threats, builds domestic engineering depth, and conserves foreign exchange.

The specific problem the radar addresses is surveillance over mountainous frontiers, where coverage gaps are an operational risk. Filling them with an indigenous sensor advances two goals at once: a hard military capability (better low-level detection in the Himalayas) and a policy goal (defence self-reliance). It is a compact, concrete example of how the Atmanirbhar Bharat framework is meant to work in practice — a real capital contract, a named DRDO lab, a named DPSU, and a procurement category chosen to maximise the Indian share.

There is also an industrial multiplier worth noting. When a system is designed and built at home, the order does not end at the two radars; it sustains a domestic supply chain of component vendors, including micro, small and medium enterprises and startups feeding into the prime manufacturer, and it deepens the skills base in radar engineering, signal processing and air-defence software. Each such IDDM order strengthens the case for the next one, because the design teams and production lines stay warm rather than being rebuilt from scratch for every requirement. The long-term payoff of self-reliance in defence is measured less in any single contract than in this cumulative buildup of indigenous capability — the ability to design, iterate and support critical systems without waiting on a foreign supplier's terms or timelines.

For Mains

Exemplification
A live, datable example of indigenisation in defence: a ₹1,950-crore IDDM contract where DRDO's LRDE designed the Mountain Radar and BEL manufactures it for the IAF — usable in any answer on Atmanirbhar Bharat in defence or self-reliance in critical technologies.
Substantiation
Concrete data points — contract value, two radars, the Buy (Indian-IDDM) category, the DRDO→BEL→IAF chain — to ground an argument about the design-to-production pipeline for indigenous military hardware.
Position
The government's stated stance: indigenous installation will boost air defence, strengthen national security, and cut dependence on foreign equipment — the official rationale for prioritising domestic procurement.
Problematisation
The deal implicitly flags the gap it fills — reliance on foreign air-defence equipment and surveillance shortfalls in mountainous terrain — anchoring the "why self-reliance" half of a defence-economy answer.
Deploys into: GS3.17 (achievements of India in S&T; indigenisation of technology) and GS3.12 (developing new technology) — defence self-reliance, the DRDO–DPSU ecosystem, and reducing import dependence in critical-technology procurement.
Ministry of Defence · 2026-03-31 · PRID 2247262 · PIB source ↗