Coastal surveillance: Indonesia
An archipelago of thousands of islands has more coastline than any chain of radar stations can cover, and the straits and channels between the islands are precisely where a fixed, emitting radar reveals its own gaps. Indonesia's maritime picture is built from stations that see only to the horizon, leaving the mid-water and the far approaches routinely transited in the spaces a planning map does not show.
A coastline with more gaps than coverage
For an archipelagic state the geometry works against coverage: every island adds coast to watch, and the fixed, emitting nature of each radar station tells anyone operating illegally exactly where the coverage begins and ends. Conventional coastal radar reaches only to the horizon and below it, so the channels between islands and the wider EEZ are effectively unwatched, and the maritime authority is left stitching a fragmented picture from stations that cannot follow a contact from open water to the shore. Smuggling, unauthorised approaches and illegal fishing all exploit these seams.
Filling the gaps without giving them away
Passive Radar is the natural gap-filler for a fixed radar chain: by exploiting ambient signals it adds detection and tracking coverage without emitting, so it extends the picture into the seams between stations without telling an adversary where the new coverage lies or offering anything to jam, turning predictable gaps into watched water. Ocean surveillance satellites add the wide-area layer out to the edge of the zone, catching vessels running dark long before they reach coastal radar range, while satellite-based Fish Detection adds fisheries analytics that flag anomalous activity near the islands. Because all three come from independent, non-aligned makers, the coastal picture is tasked on national priorities and retained under national control, with localisation arrangements scoped per programme and subject to export controls and end-use approvals.
How engagement works in Indonesia
As an independent, non-aligned prime vendor, Unstrat fields one accountable team that first targets the known gaps, adding passive coverage where the radar chain is weakest and standing up a satellite baseline over the wider approaches to reveal how current coverage is actually being circumvented. Coverage is then fused into a single picture that follows a contact from open water to the quayside, with in-region crews running and sustaining each layer. Equipment is end-use certified and sustained in-region, and localisation arrangements are scoped per programme rather than promised in advance.
Closing the seams, one accountable channel at a time
A programme begins with a briefing that locates the known gaps in the existing radar chain (the channels and straits already being transited) before any equipment is discussed. Export-control clearance and end-use confirmation come ahead of representation, so what the maritime authority commits to is deliverable and defensible. The work of matching capability to conditions is central here: passive coverage is placed where the fixed, emitting stations are weakest, and a satellite baseline over the wider approaches reveals how current coverage is actually being circumvented, giving planners the advantage of seeing the seams before an adversary exploits them. Layers are then fused so a contact is followed from open water to the quayside as one picture. Sustainment is phased with in-region crews running each layer, and localisation arrangements are scoped per programme, subject to export controls and end-use approvals, keeping the picture answerable to national command.
Relevant capability
Adjacent priorities in Indonesia
Indonesia's exclusive economic zone wraps thousands of islands and the busy straits between them, and it is at the far edges of that zone (where patrol vessels rarely reach) that foreign trawlers work the banks and land catch quietly. For an archipelagic state, the theft is invisible until stocks thin and the artisanal fleets that feed coastal communities come home empty.
Problem pageIndonesia sits astride some of the world's busiest sea lanes, and the narrow, island-fringed straits that carry that traffic are exactly where a small craft can close on a vessel unseen. For an archipelagic trading nation, waters that acquire a reputation for armed robbery deter the port calls and transits its economy depends on long after any single incident.
Problem pageIndonesia's ports concentrate the trade of an archipelago into small, fixed footprints that are exposed from the water, the air and the network at once. A disruption at a major port does not stay at the port. It ripples through the supply chains, customs revenue and coastal economies that depend on the sea.
Problem pageRelevant solutions
Indonesia: security context
Indonesia's vast archipelago shapes its priorities: maritime domain awareness across thousands of islands and straits, protection of its exclusive economic zone and fisheries, readiness for disaster response, and countering piracy along busy sea lanes. It is an environment where scale and dispersal define every security task.
One accountable, non-aligned partner gives Indonesia a coherent counterpart for those priorities: archipelagic maritime domain awareness, EEZ and fisheries protection, disaster-response capability and counter-piracy. A defence ministry gains end-use certified equipment and localisation arrangements scoped per programme rather than promised in advance.
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 do you cover the gaps between Indonesia's coastal radar stations?
With passive coverage. Passive Radar exploits ambient signals to detect and track without emitting, so it fills the predictable seams between fixed, emitting radar stations across the channels and straits, extending the picture into the gaps without advertising where the new coverage is or offering anything for an adversary to jam.
How is the maritime picture extended beyond radar range in an archipelago?
Ocean surveillance satellites detect and track vessels out to the edge of the EEZ, including those running dark, so movement is caught long before it reaches coastal radar range. Fused with passive coverage near the coast and satellite fish-detection analytics inshore, the result follows a contact from the open approaches all the way to the quayside.
Does Indonesia retain control of the coastal picture?
Yes. Because the passive radar, satellite tracking and satellite fish-detection analytics come from independent, non-aligned makers, the picture is tasked on national priorities and held under national control rather than assembled from a foreign feed. Localisation arrangements are scoped per programme and subject to export controls and end-use approvals.