Australia’s northern approaches are increasingly contested, yet the airspace over Cape York remains under-monitored and operationally thin.
But only for the moment. Civilian sensors will close the gap. My company, Space Centre Australia, has begun installing them for its own commercial purposes—monitoring airspace before and during space launches—but we’re going through regulatory procedures to make data from them available to the government.
We think this will have great value for Australia, because of the importance of Australia knowing what’s going on over and near Cape York. At the junction of the Coral Sea, Torres Strait and the Arafura Sea, the cape is part of a geopolitical chokepoint and a gateway to some of the most important maritime and aerial corridors in the region.
At their closest, Australian islands in the Torres Strait are just 4 km from Papua New Guinea, meaning any hostile actor operating in the Torres Strait or across the northern air routes has a short flight time into Australian territory and limited early warning barriers to navigate.
Despite its significance, persistent sovereign air surveillance coverage in the region is currently inconsistent and fragmented. Much of it relies on old communication systems, large coverage footprints and sparse infrastructure. Current radars across northern Queensland are optimised for broad aviation safety rather than fine-grained tactical or strategic surveillance. For example, there is no capability for precise localisation or tracking. The air force’s Jindalee over-the-horizon radar at Longreach, Queensland, has coverage over Cape York, but it is not known to operate continuously, and data from such sensors is imprecise.
As other countries expand their intelligence, surveillance and reconnaissance capabilities, and as low-observable and uncrewed systems become increasingly prevalent, this lack of persistent, precise radar coverage is unacceptable.
Cape York is a soft target for grey-zone tactics, irregular incursions and unconventional intelligence, surveillance and reconnaissance operations. This includes foreign-flagged aircraft operating without active transponders, commercial drones on intelligence-gathering missions, and uncooperative civil or state-based aircraft probing the airspace. In such a context, the absence of precise and timely domain awareness undermines Australia’s broader northern deterrence posture.
Closing this gap demands targeted investment in dual-use surveillance infrastructure—such as updated communications systems, direction finding, localisation and radiofrequency identification—that can operate reliably in remote environments while integrating into existing civil, defence and border protection systems.
The introduction of modern air surveillance radar capability at Cape York is one such step that’s already underway. Space Centre Australia has begun a project to install two Hensoldt ASR-NG radars at our Atakani launch site. They should be operational by the fourth quarter of 2027, tasked with telling us what’s in the air as we prepare to launch rockets.
These are civil sensors that offer up to 220 km of 3D primary air surveillance and advanced secondary radar features, including ADS-B tracking and identification-friend-or-foe modes. Crucially, the radars can track aircraft operating without active transponders, the devices that are ordinarily used in civil aviation to help sensors observe and identify aircraft. The new radars’ capability will be a significant advantage in a region where irregular aerial patterns are increasingly common.
They alone will not fully close the Cape York surveillance gap, but they are part of a broader surveillance architecture under development by Space Centre Australia that will. The result will be a node in Australia’s national security architecture, capable of detecting, tracking and communicating threats in real-time across multiple domains.
The integration of surveillance infrastructure into Australia’s far north aligns with recommendations of the Defence Strategic Review, particularly those related to enhancing basing and operational awareness in the region. Surveillance is the connective tissue between posture and action. Without it, long-range strike capabilities, airbase upgrades and force projection become hollow. Early warning and airspace control must precede—or at the very least parallel—any serious spending on force mobility or deterrent capability.
How this infrastructure is delivered is also important. The project at Atakani, 40 km east of Weipa, is being developed in partnership with Indigenous communities, including the Luthig Traditional Owner Family, Napranum Community, Weipa Community and the Mokwiri registered native-title body-corporate. Engaging traditional owners in the design, planning and custodianship of sovereign infrastructure ensures that security outcomes are both enduring and inclusive. Such projects must seriously integrate local employment, skills development and cultural recognition if they are to succeed politically and socially.
Grey-zone threats are evolving. Surveillance competition in the Indo-Pacific is intensifying. Civil-military convergence in aerospace is accelerating. In this environment, the ability to detect and track aircraft—cooperative or not—is fundamental to maintaining operational awareness and enforcing sovereignty.