Space Domain Awareness (SDA)
Definition
Space domain awareness refers to the capability of tracking and characterizing space objects within the space domain —in particular, Earth’s orbits— through the use of multiple space situational awareness (SSA) activities as well as consideration and assessment of the intent of actors, space policies, and strategies. Some use the term ‘space domain awareness’ (SDA) to refer to space situational awareness (SSA) when SSA is used in a military context. Others make a distinction between the two, and understand SSA as related to specific tasks, missions or objectives, whereas SDA takes a holistic approach and includes all the means available to the actor, including SSA’s technical data but also assessment of intent, and awareness of activities, space policies, and strategies, and other means of analysis and understanding the behaviour and intent of other actors.
Space Services and Activities
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