Australian Space Situational Awareness
Australia has always been the lucky country, rich in resources, distant from the pressures that shape other nations' decisions. That same geography now places it at the centre of a new kind of resource contest: the race to see, track, and govern 16,000+ objects in orbit. The Southern Hemisphere vantage is irreplaceable. Whether Australia captures the value of that position, or watches others do it, is the question this paper answers.
Roughly two-thirds are Starlink. The orbital environment Australia depends on for communications, navigation, earth observation and national defence is becoming the most congested shared resource in human history, and nobody fully owns the job of keeping it safe.
"This is not a story of missing capability. It is a story of capability that exists but is not connected."
Australia's sensors collect some of the world's most strategically valuable space data. But without a sovereign catalogue or processing pipeline, that data is exported raw, and returned as a commercial product Australia pays for twice.
Australia's world-class ground sensors (SST, DARC, MWA) capture premium orbital data 24/7.
Without a sovereign catalogue or processing pipeline, the raw data leaves the country.
Australia purchases the processed product (conjunction alerts, catalogues) from the same overseas providers.
LEO hosts megaconstellations. MEO carries GPS. GEO parks weather satellites in place. Each shell demands different tracking technology, and debris in each behaves differently.
At 160–2,000 km, LEO satellites orbit every 90 minutes. Starlink, OneWeb, and Amazon Kuiper are concentrating thousands of craft here. Collision risk is highest, and debris persists for years before re-entry.
GPS, GLONASS, Galileo and BeiDou orbit at 20,000 km. Fewer objects, but debris here can persist for centuries. Australia's military and civilian infrastructure depends absolutely on MEO GNSS signals.
Satellites here appear fixed overhead — hosting weather, broadcast, and military communications. A collision would generate debris that stays in GEO essentially forever. DARC at Exmouth was built specifically to watch this shell.
In 1978, NASA scientist Donald J. Kessler described a runaway cascade in which object density in LEO becomes high enough that collisions generate debris that cause further collisions. Trigger one below.
The biggest gains will come from linking existing assets, not building new ones.
The commercial megaconstellation era has reshaped the orbital environment more in half a decade than the preceding four decades combined. Planned launches could add 50,000 more this decade.
Drag to orbit. Scroll to zoom. Toggle Starlink, OneWeb, GNSS and debris layers; speed up time; watch orbital mechanics play out across Australia's ground sites in real time.
DARC was sited at Exmouth for a reason. Northern-hemisphere networks cannot see what passes over the Indian and Southern Oceans. Australia can, and its electromagnetically quiet interior is ideal for radio sensing.
Neuromorphic event-based cameras and passive radar are both Australian-developed, both arms-restriction-free, and both deployed today. What's missing is the procurement pathway.
Australia's capability operates in isolated layers with no shared pipeline to connect them.
The capability operates in pockets. Australia maintains no sovereign space object catalogue and no shared research pipeline to link these assets.
Developed at WSU's ICNS, commercialised by Optera. Event-based sensors record only changes in light, with microsecond precision, dramatically lower data volumes, and no international equivalent.
No emission, no spectrum licence, all-weather, 24/7. Silentium Defence's Oculus Observatory is the world's first commercial passive radar for space surveillance.
Non-Earth Imaging resolves configuration details that ground telescopes cannot. HEO's Argus constellation serves the US NGA. Continuum-1 (Feb 2026) aims to demonstrate Australia's first actively propelled satellite inspection.
Australia does not need to match US spending. It needs the integration model proven by the UK, Germany, and the EU SST consortium.
"Australia lacks the baseline integration that its allies share. We do not need to match the US Space Force's $42B budget; we simply need the UK NSpOC coordination model."
Sequenced by what can be done now versus what requires new funding. Reform FOR codes first. That costs nothing and unblocks everything.
Policy, investment, and sensor deployments that define the current window of opportunity.
SSA has its own language. Every term used in this paper appears below.
The window is defined by the megaconstellation surge, the SmartSat CRC funding transition, and international STM frameworks being written now. Australia does not need to match larger nations' spending. It needs to connect what it already has.
The full SRN White Paper chapter includes the 22-organisation industry directory, sensor infrastructure inventory, international benchmarking, ARC funding analysis, and 2019–2026 milestones.