Why can't my nation simply subscribe to the US 18th Space Control Squadron's public catalogue?

The public Space-Track catalogue (space-track.org) omits classified objects, degrades positional accuracy for sensitive targets, and is subject to US policy decisions that can restrict access without notice. A sovereign tracking capability ensures you receive unfiltered, unredacted data on objects relevant to your own satellite fleet and national security. You also cannot task the US catalogue to answer intelligence questions — it tells you where objects are, not why they manoeuvred.

What orbit should a sovereign adversary-tracking constellation occupy?

A hybrid architecture is most effective: a LEO constellation of radar-payload microsatellites (500–600 km SSO) for wide-area revisit and a smaller set of MEO optical sentinel satellites for persistent GEO-belt surveillance. LEO radars can track objects down to ~5 cm with phased-array technology, and revisit any orbital plane every 60–90 minutes at sufficient constellation density (≥ 24 planes, 3 satellites per plane).

How many satellites are required for meaningful independent tracking capability?

Academic modelling published by ESA and MIT Lincoln Laboratory suggests that 18–24 LEO radar microsatellites, evenly distributed across inclination planes, can achieve global coverage with an average revisit of under 2 hours for objects in the 250–2,000 km altitude band. Below 18 satellites you still have operationally useful regional coverage, which may be sufficient for a smaller nation focused on protecting specific orbital slots rather than achieving global situational awareness.

What is the difference between Space Situational Awareness (SSA) and adversary satellite tracking specifically?

General SSA encompasses debris monitoring, conjunction screening, re-entry prediction, and space weather — most of which is cooperative and civilian. Adversary satellite tracking is the intelligence discipline within SSA focused specifically on characterising the behaviour, intent, and capability of foreign military and dual-use satellites. It involves pattern-of-life analysis, anomaly detection, and correlation with signals intelligence — capabilities that commercial SSA providers do not offer and that allies will not share in full.

Can a small or middle-power nation afford a sovereign tracking constellation?

Modern radar microsatellites in the 50–150 kg class cost $8–20 million per unit to procure and launch; a 12-satellite initial constellation therefore falls in the $150–300 million range — comparable to a single conventional surveillance aircraft and its 10-year operating cost. Several allied groupings (Five Eyes, EU member states under EU SST) have demonstrated that cost-sharing while retaining sovereign data rights is a viable model that further reduces the per-nation investment.

How do I legally characterise 'adversary' satellites given the Outer Space Treaty's non-aggressive-use provisions?

The 1967 Outer Space Treaty prohibits placing weapons of mass destruction in orbit and requires that the Moon and other celestial bodies be used for peaceful purposes, but it does not prohibit military reconnaissance, inspection, or proximity operations per se. Tracking foreign satellites and publishing assessments of their behaviour is an established, lawful activity — practised by the US, Russia, China, France, and the UK — provided the tracking does not constitute active interference under Article IX of the OST or ITU Radio Regulations.

What payload technology underpins space-based adversary tracking?

Three primary payload types are used: (1) phased-array radar for all-weather, day/night tracking of objects ≥ 5 cm; (2) electro-optical telescopes (CCD or SWIR) for high-resolution imaging and manoeuvre characterisation in deep LEO and GEO; and (3) radio-frequency monitoring receivers for emission characterisation and identity correlation. The most capable sovereign programmes (US, France via GRAVES/Fenix, Australia via Jindalee) combine at least two of these in ground–space hybrid architectures.

What data formats and interfaces should a sovereign system publish internally?

The de facto standard for machine-to-machine exchange is the CCSDS Conjunction Data Message (CDM, CCSDS 508.0-B-1) for collision warnings, and the standard SP/TLE or more precise OEM (Orbit Ephemeris Message, CCSDS 502.0-B-3) for state vectors. Internally, sovereign systems should ingest and produce these formats to remain interoperable with allied networks and commercial augmentation services, while maintaining a classified layer in a national data standard for intelligence-grade products.

7.7.1Live

Adversary Satellite Tracking

Uniformed military analysts seated at glowing monitors in a darkened operations control room — An engineer monitoring multiple industrial screens enables the real-time awareness essential for tracking adversary satellites and safeguarding orbital domains.

Tracking Adversary Satellites from Orbit to Command

1
Observer Constellation
SSA satellites image adversary orbital slots
2
Encrypted Downlink
Telemetry relayed to secure ground stations
3
Orbit Analytics
AI correlates manoeuvres with threat database
4
Command Decision
Commanders receive cued adversary track alerts

Observer satellites collect orbital data, downlink encrypted telemetry, and feed AI analytics that alert commanders to adversary manoeuvres.

Page in the build queue

This application has its place in the atlas. The full page — short and long descriptions, what-matters bullets, sovereignty rationale, and the eight-field architecture block — is being written next.

Maturity reading: Operational systems exist with paying customers. Phase 1 built §4.1 (Maritime Intelligence) end-to-end as the depth-and-format reference. Section 4 is the next section to graduate from scaffold to full content; the rest follow on the roadmap.

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Rendezvous & Proximity Detection

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