Coastal surveillance: India
India faces the sea along two long coastlines and a scatter of island territories, so continuous awareness of the approaches is a task measured in thousands of kilometres of shore. Fixed coastal radar reaches only so far, and the seams between stations, around headlands, estuaries and busy fishing grounds, are exactly where the picture thins.
Two coastlines and the gaps between stations
The Indian coast runs from the Arabian Sea around the peninsula to the Bay of Bengal, threading past major ports, dense fishing fleets, refinery towns and offshore fields. A chain of coastal radar covers the arcs it can see, but the curvature of the earth and the spacing of stations leave low, slow and small contacts unresolved close inshore, where a fishing vessel, a small craft or a hull running dark is hardest to tell apart. The problem is less a shortage of sensors than a continuous, fused picture from the beach out to the edge of the exclusive economic zone.
A layered picture from shore to the EEZ edge
Passive radar extends coverage across the seams without adding an emitter a hostile party can locate or jam, filling the low-altitude and inshore gaps active stations leave along an indented coast. Vessel detection from orbit builds the wide-area layer offshore, flagging the tracks that mark a contact working a bank or loitering off an approach rather than transiting through, while observation drones classify the contacts that matter around ports and anchorages. Because these capabilities come from independent, non-aligned makers, the resulting picture is tasked on national priorities and retained under national control, not gated by a foreign feed.
How engagement works in India
Unstrat engages India as an independent, non-aligned prime vendor: one accountable team representing the manufacturers directly, with end-use certified equipment and in-region sustainment rather than a distribution arrangement. India's strong expectation of indigenous industrial partnership is met through localisation arrangements (support, source-code transfer and local production for the products under discussion) scoped per programme and subject to export controls and end-use approvals. A programme typically begins on the most trafficked coastal sectors and extends into a common maritime picture the coastguard and navy operate themselves.
Sequencing a coastal picture across two seaboards
Engagement opens with a working briefing for the coastguard and navy on how a fused picture would take shape across the Arabian Sea and Bay of Bengal seaboards, before any representation of equipment is discussed. Export-control clearance and end-use confirmation are settled first, since the sensing on the table is controlled capability. From there the layers are matched to India's real conditions rather than fitted to a catalogue: passive radar tuned to the indented, station-spaced shore, orbital vessel detection offshore, observation drones over the busiest anchorages. A programme is then phased: the most trafficked sectors are instrumented first, in-region sustainment stands the capability up, and it broadens into a common maritime picture the operators run themselves. Localisation arrangements are scoped per programme, subject to export controls and end-use approvals, so Indian industry helps build the awareness that protects the approaches.
Relevant capability
Adjacent priorities in India
Illegal, unreported and unregulated fishing drains coastal economies and undermines sovereignty over the exclusive economic zone. Persistent satellite surveillance, satellite-data fisheries analytics and aerial ISR give maritime authorities the picture they need to intercept offenders, without depending on a major power's data feed.
Problem pagePiracy raises insurance costs, deters shipping and endangers seafarers. Space-based vessel monitoring, aerial patrol and hardened port and vessel systems let coastal states detect threats early and protect the shipping lanes their economies depend on.
Problem pageIndia's major ports concentrate a continental volume of trade into a handful of exposed footprints, vulnerable from the water, the air and the network at once. A single gateway that runs container traffic, energy imports and naval movement together is a first-order target where the consequences of a stoppage reach far inland.
Problem pageRelevant solutions
India: security context
India's scale and setting shape a broad security profile: maritime domain awareness across two coastlines, surveillance of extensive land frontiers, protection of critical infrastructure, and airspace defence against inexpensive aerial threats. A strong expectation of indigenous industrial partnership runs through all of it, favouring capability that can be built and sustained locally.
An accountable, non-aligned engagement gives India a coherent counterpart for those priorities: maritime domain awareness, border surveillance, infrastructure protection and counter-UAS defence. A defence ministry gains end-use certified equipment and localisation arrangements, including support, source-code transfer and local production for products under discussion, scoped per programme.
About this challenge
Coastal radar sees only so far, and gaps between stations are exploited daily. Passive radar that adds coverage without emitting, satellite vessel detection and satellite-data fisheries analytics extend the maritime picture from the beach to the edge of the EEZ.
Frequently asked questions
How does coastal surveillance suit India's two coastlines?
The picture is built in layers matched to a long, indented shore: passive radar fills the inshore seams without emitting, orbital vessel detection covers the wide-area approaches, and observation drones classify the contacts that matter around ports. Together they extend awareness from the beach to the edge of the exclusive economic zone. We would welcome the chance to brief your team on sequencing that coverage across the busiest sectors first.
Can this capability support Indian industrial participation?
Yes. Localisation arrangements (support, source-code transfer and local production for the products under discussion) are scoped per programme and subject to export controls and end-use approvals, so Indian industry can be part of building and sustaining the picture rather than only receiving it.
Why is passive radar useful along the Indian coast?
Passive radar detects contacts by exploiting ambient signals, so it emits nothing a hostile party can locate or jam, and it fills the low, slow and inshore gaps that fixed stations leave around headlands and estuaries. It adds coverage across the seams without adding a signature.