Space domain awareness
Space domain awareness is the study and monitoring of satellites orbiting the Earth. It involves the detection, tracking, cataloging and identification of artificial objects, i.e. active/inactive satellites, spent rocket bodies, or fragmentation debris. Aims
Space domain awareness accomplishes the following:

 Predicting when and where a decaying space object will re-enter the Earth's atmosphere;
 Preventing a returning space object, which to radar looks like a missile, from triggering a false alarm in missile-attack warning sensors;
 Charting the present position of space objects and plot their anticipated orbital paths;
 Detecting new man-made objects in space;
 Producing a running catalogue of man-made space objects;
 Determining which country owns a re-entering space object;
 Informing countries whether or not objects may interfere with satellites and International Space Station orbits;
 Providing data for future anti-satellite weapons systems. Systems

Systems include:
 The DEEP-Sight prototype, designed by Deepinder Uppal on behalf of the Defense Innovation Unit, this system is designed to provide space domain awareness across a broad-spectrum of SDA use cases to Space Force, the United States Navy and PSRA (Public Satellite Research and Analysis) teams. The United States Space Surveillance Network which has detectors such as the Space Fence (replacing the now defunct Air Force Space Surveillance System) and Space Surveillance Telescope
 The Russian Main Control Centre of Outer Space with facilities such as Okno and Krona
 The French GRAVES (Grand Réseau Adapté à la Veille Spatiale) bi-static radar-based space surveillance system deploy by French Air Force
 The European Space Situational Awareness Programme with multiple assets in its Space Surveillance and Tracking Segment
 The Australian based Silentium Defence Oculus passive radar space observatory in Swan Reach, South Australia
 The American National Reconnaissance Office's Skybarker satellites

References

External links 
 United States Space Surveillance

Space technology
Surveillance
Space debris